Polymer Gel Standby Battery
OPERATION MANUAL
Version：V4.7
Zhejiang Narada Power Source Co., Ltd.
MPG Series
NARADA POWER SOURCE CO., LTD Operation Manual for MPG Series
2
Contents
Security Instructions ......................................................................................................................... 3
Chapter One Product Introduction ................................................................................................ 4
1.Features ................................................................................................... 错误!未定义书签。
2. Main Applications .................................................................................. 错误!未定义书签。
3. Types and Dimensions ............................................................................ 错误!未定义书签。
4. Dimension and Sketch Map.................................................................... 错误!未定义书签。
5. Terminals Sketch Map ........................................................................................................... 7
Chapter Two Technical Characteristics ........................................................................................... 8
1. Charge Characteristics Curve .............................................................................................. 8
2. Discharge Characteristics Curve ............................................................................................ 8
3. Internal resistance and short circuit current ......................................................................... 9
4. Constant Current and Power Discharge Data ...................................................................... 10
Chapter Three Operation and Maintenance ................................................................................ 18
1. Operation Condition ............................................................................................................ 18
2. Capacity ............................................................................................................................... 18
3. Temperature ........................................................................................................................ 19
4. Charge and discharge requirements ................................................................................... 22
5. Storage ................................................................................................................................ 23
6. Maintenance ....................................................................................................................... 24
Annex 1 ........................................................................................................................................... 27
NARADA POWER SOURCE CO., LTD Operation Manual for MPG Series
3
Safety and Warning
Please read this manual! It provides very important direction for fix and operation, which can
make best capability for the equipment, and elongate the using life.
⚫ For your safety, please do not try to dismantle or open the equipment. The equipment
does not contain any spare parts for you. The maintain work can only be done by
specially trained service persons.
⚫ As a result of the batteries’ latent endanger to heath and environment, they should be
only changed in our authorization service center. If you need to change the battery or
maintain the equipment, please call the nearest service center.
⚫ Batteries can be reclaimed, if it could not be carefully handled, it will do great harms to
environment and heath. Please check local laws and regulations to get the validity
handle ways or send the equipment to authorized service center.
⚫ The replacement of battery can only be done by persons who know well about the
danger and the prevention. When changing the battery, please use the same model and
type of sealed gel battery.
Warning—do not smoke or use fire near batteries。
Warning—do not use organic solvent to wash batteries
Warning—dot not put batteries into the fire, or it may bombed。
Warning—do not open batteries, it contains electrolyte, which can hurt the skin and eyes.
Warning—There may happen shock or short circuit when replacing the batteries. Please
operate with tools with insulated handles.
Please take care of the following marks in using
Warning
Electricity
danger
Protecting
your eye
Watch
Short-circuits
With adults
custody
Do not put batteries
into dustbin
Read the
manual
Fire
forbidden
Circle used
The product has
past the UL
authentication
The product has
past the CE
authentication
NARADA POWER SOURCE CO., LTD Operation Manual for MPG Series
4
Chapter One Product Introduction
1. Technical Features
1.1. Gel technology
1.1.1. Using polymer gel electrolyte
1.1.2. Special Paste Formula
1.1.3. Special Patented grid alloy
1.1.4. Thick Plate Design
1.1.5. Through-the-portions Welding and low internal resistance
1.2. Reliable Seal Technology
1.2.1. High precise ABS heat heal technology；
1.2.2. The seal recombination efficiency reaches up to 99.0%；
1.2.3. Reliable post seal structure；
1.2.4. Integrated valve design to ensure precise and reliability.
1.3. Excellent high rate discharge performance
1.3.1. Through-the-portion Welding and low internal Resistance.
1.3.2. Radical Grid Design.
1.3.3. Patented Paste Technology.
1.3.4. Silver Coated Flexible Connector
1.4 Front terminal rack design
1.4.1. Excellent Heat Dispersing Ability
1.4.2. Positive and Negative Terminals on the Same Side. Easy for Monitoring and
Maintenance.
1.4.3. Flexible Connector for Flexible installation.
2. Main Applications
2.1. Communication System
2.2. UPS
2.3. Electricity Power System
2.4 Other applications to provide integrated stored energy system
NARADA POWER SOURCE CO., LTD Operation Manual for MPG Series
5
MPG12V200
3. Types and Dimensions
Tab.1-1 Types and Dimensions
Type
Normal
Voltage
（V）
Rated
Capacity
C10(Ah)
Dimensions(mm)
Weight
(Kg)
Length
Width
Height
MPG12V50F
12
50
390
105
227
20.7
MPG12V65F
12
65
395
105
270
24.5
MPG12V85F
12
85
395
105
270
28.0
MPG12V100F
12
100
558
125
227
38.0
MPG12V105F
12
100
511
110
238
34.0
MPG12V125F
12
125
558
125
270
48.0
MPG12V150F
12
150
558
125
310
52.0
MPG12V150FA
12
150
558
125
310
57.5
MPG12V150FB
12
150
550
110
285
44.0
MPG12V155F
12
155
559
125
283
53.0
MPG12V170F
12
170
558
125
310
55.5
MPG12V200
12
200
498
259
238
71.0
4. Dimension and Sketch Map
MPG12V150F
MPG12V150FA
NARADA POWER SOURCE CO., LTD Operation Manual for MPG Series
6
MPG12V50F
MPG12V75F
MPG12V85F
MPG12V100F
MPG12V105F
MPG12V125F
MPG12V150F
NARADA POWER SOURCE CO., LTD Operation Manual for MPG Series
7
MPG12V75F、MPG12V125F、MPG12V150F
MPG12V50F
45
5. Terminals Sketch Map
MPG12V100 MPG12V200
MPG12V100F MPG12V105F
MPG12V155F
MPG12V85F
NARADA POWER SOURCE CO., LTD Operation Manual for MPG Series
8
Chapter Two Technical Characteristics
1. Charge Characteristics Curve
Fig. 2-1 The battery voltage vs charge time curves at 25℃
Fig.2-1 Charge Curve at 25℃
2. Discharge Characteristics Curve
Fig.2-2 The terminal voltage vs discharge time curves at different current at 25℃.
Fig.2-1 Discharge Curve at different current at 25℃
NARADA POWER SOURCE CO., LTD Operation Manual for MPG Series
9
3. Internal resistance and short circuit current
The internal resistance of the battery is a dynamic nonlinear parameter that is continuously
changed along with the temperature and discharge state. The internal resistance is the lowest
when battery is fully charged. The table 2-1 shows the internal resistance and short circuit
current in fully charged state
Table 2-1 Internal resistance and short circuit (25℃)
Type
Internal Resistance(mΩ)
Short Circuit Current (A)
MPG12V50F
8.39
1487
MPG12V65F
7.50
1720
MPG12V85F
6.79
1880
MPG12V100F
5.55
2290
MPG12V105F
5.45
2337
MPG12V125F
3.91
3151
MPG12V150F
4.55
3223
MPG12V150FA
3.91
3200
MPG12V150FB
4.00
2500
MPG12V155F
3.10
3230
MPG12V170F
3.03
3873
MPG12V200
2.83
4187
Note: Short circuit current will decrease the voltage of the battery to 0V, and damage the internal
components of the battery.
NARADA POWER SOURCE CO., LTD Operation Manual for MPG Series
10
4．Constant Current and Power Discharge Data
Table 2-2 Constant current discharge characteristic Units: Amperes(25℃)
MPG12V50F
End voltage
per cell
5min
15min
30min
45min
1h
2h
3h
4h
5h
6h
8h
10h
12h
20h
24h
1.60V
164
88
53
39
31.2
17.9
14.0
10.8
9.6
8.1
6.3
5.2
4.40
2.73
2.28
1.67V
154
85
52
38
31.0
17.8
13.8
10.7
9.5
8.1
6.2
5.1
4.35
2.71
2.26
1.70V
152
83
52
38
30.8
17.7
13.7
10.7
9.4
8.1
6.2
5.1
4.31
2.70
2.26
1.75V
140
81
51
38
30.4
17.2
13.5
10.6
9.3
8.0
6.2
5.1
4.31
2.69
2.26
1.80V
126
75
49
36
29.6
17.1
13.5
10.5
9.1
7.8
6.1
5.0
4.28
2.67
2.25
1.83V
120
69
48
35
28.3
16.8
13.0
10.0
8.8
7.6
6.0
4.8
4.10
2.66
2.22
1.85V
112
67
45
34
27.4
16.2
12.7
9.9
8.6
7.4
5.8
4.8
4.08
2.61
2.20
MPG12V85F
End voltage
per cell
5min
15min
30min
45min
1h
2h
3h
4h
5h
6h
8h
10h
12h
20h
24h
1.60V
316
170
103
75
60.2
34.5
25.0
19.7
16.6
14.3
10.9
9.0
7.57
4.74
3.96
1.67V
297
164
102
74
59.8
34.3
24.6
19.6
16.5
14.2
10.8
8.9
7.56
4.70
3.93
1.70V
294
161
100
74
59.4
34.0
24.5
19.5
16.3
14.1
10.8
8.9
7.49
4.69
3.93
1.75V
271
156
99
73
58.5
33.2
24.2
19.2
16.2
13.9
10.7
8.8
7.49
4.68
3.92
1.80V
243
146
95
70
57.0
32.9
24.0
19.2
15.9
13.7
10.6
8.7
7.42
4.63
3.92
1.83V
232
133
93
68
54.5
32.5
23.2
18.3
15.3
13.2
10.3
8.4
7.06
4.62
3.85
1.85V
217
129
86
65
52.8
31.3
22.6
18.1
15.0
12.9
10.0
8.3
6.98
4.53
3.82
MPG12V100F
End voltage
per cell
5min
15min
30min
45min
1h
2h
3h
4h
5h
6h
8h
10h
12h
20h
24h
1.60V
365
196
118
86.1
69.5
39.8
28.8
22.7
19.1
16.4
12.6
10.4
8.73
5.47
4.57
NARADA POWER SOURCE CO., LTD Operation Manual for MPG Series
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1.67V
342
189
117
85.5
69.0
39.6
28.4
22.6
19.0
16.3
12.5
10.3
8.72
5.42
4.53
1.70V
339
186
115
84.9
68.5
39.2
28.2
22.5
18.8
16.2
12.5
10.2
8.64
5.41
4.53
1.75V
312
180
114
84.3
67.5
38.3
27.9
22.1
18.6
16.0
12.4
10.1
8.64
5.40
4.52
1.80V
280
168
109
80.8
65.7
38.0
27.7
22.1
18.3
15.7
12.3
10.0
8.56
5.34
4.52
1.83V
267
153
107
78.1
62.9
37.5
26.7
21.1
17.6
15.2
11.9
9.7
8.14
5.33
4.44
1.85V
250
149
100
75.0
60.9
36.1
26.0
20.8
17.2
14.8
11.6
9.6
8.05
5.23
4.41
MPG12V105F
End voltage
per cell
5min
15min
30min
45min
1h
2h
3h
4h
5h
6h
8h
10h
12h
20h
24h
1.60V
323
174
105
89
71.3
40.9
29.6
23.3
19.7
16.9
12.9
10.6
8.97
5.62
4.69
1.67V
304
168
103
88
70.9
40.7
29.1
23.1
19.6
16.8
12.8
10.5
8.96
5.57
4.65
1.70V
300
165
101
87
70.3
40.4
28.9
23.0
19.3
16.5
12.7
10.5
8.87
5.56
4.65
1.75V
276
160
100
87
69.3
39.3
28.6
22.8
19.2
16.4
12.6
10.4
8.87
5.55
4.64
1.80V
248
149
96
83
68.0
39.0
28.4
22.7
18.8
16.1
12.5
10.3
8.80
5.49
4.63
1.83V
236
136
95
80
64.6
38.5
27.5
21.7
18.1
15.5
12.2
9.9
8.37
5.48
4.56
1.85V
221
132
89
77
62.5
37.0
26.7
21.4
17.7
15.2
11.8
9.9
8.26
5.38
4.52
MPG12V125F
End voltage
per cell
5min
15min
30min
45min
1h
2h
3h
4h
5h
6h
8h
10h
12h
20h
24h
1.60V
408
219
133
96
77.8
44.7
34.9
26.8
24.1
20.2
15.8
13.1
10.94
6.83
5.70
1.67V
384
212
131
96
77.4
44.4
34.3
26.7
23.9
20.2
15.6
13.0
10.84
6.77
5.65
1.70V
380
208
129
95
76.8
44.1
34.1
26.5
23.6
20.2
15.6
12.8
10.74
6.75
5.65
1.75V
349
202
128
94
75.7
43.0
33.7
26.2
23.3
20.0
15.4
12.7
10.74
6.74
5.64
1.80V
313
188
123
91
73.7
42.6
33.5
26.2
22.7
19.6
15.3
12.6
10.64
6.67
5.63
1.83V
299
172
120
88
70.5
42.1
32.4
24.9
22.0
18.9
14.9
12.0
10.24
6.66
5.54
1.85V
280
167
112
84
68.4
40.5
31.5
24.6
21.5
18.5
14.5
11.9
10.14
6.53
5.49
NARADA POWER SOURCE CO., LTD Operation Manual for MPG Series
12
MPG12V150F
End voltage
per cell
5min
15min
30min
45min
1h
2h
3h
4h
5h
6h
8h
10h
12h
20h
24h
1.60V
571
307
186
135
108.4
62.3
45.2
35.4
29.9
25.7
19.8
16.3
13.65
8.57
7.16
1.67V
537
296
183
134
108.4
61.9
44.4
35.2
29.8
25.5
19.6
16.0
13.65
8.50
7.10
1.70V
532
291
180
133
107.4
61.4
44.2
35.0
29.3
25.3
19.5
16.0
13.55
8.48
7.10
1.75V
488
282
178
132
105.4
59.9
43.6
34.6
29.1
25.1
19.3
16.0
13.55
8.45
7.09
1.80V
438
263
171
127
102.4
59.4
43.4
34.5
28.5
24.6
19.2
15.8
13.45
8.37
7.08
1.83V
417
241
168
122
98.4
58.6
41.9
33.0
27.6
23.8
18.7
15.2
12.75
8.35
6.96
1.85V
391
234
156
118
95.4
56.5
40.8
32.5
26.9
23.2
18.2
15.1
12.65
8.19
6.91
MPG12V150FB
End voltage
per cell
5min
15min
30min
45min
1h
2h
3h
4h
5h
6h
8h
10h
12h
20h
24h
1.60V
439
236
143
115
93.0
53.3
41.8
32.0
28.0
24.2
18.8
15.5
13.2
8.16
6.81
1.67V
412
228
140
114
92.5
53.0
41.0
31.8
27.8
24.1
18.6
15.2
13.0
8.09
6.75
1.70V
409
224
139
113
91.8
52.6
40.8
31.7
28.4
24.1
18.6
15.3
12.9
8.07
6.75
1.75V
375
217
138
112
90.5
51.3
40.4
31.4
27.9
23.9
18.4
15.2
12.9
8.05
6.75
1.80V
337
203
131
108
88.2
50.9
40.1
31.3
27.2
23.4
18.3
15.0
12.8
7.97
6.74
1.83V
320
185
129
105
84.3
50.2
38.8
29.8
26.3
22.5
17.8
14.4
12.3
7.95
6.63
1.85V
301
179
120
101
81.7
48.4
37.7
29.4
25.6
22.1
17.2
14.3
12.2
7.80
6.57
MPG12V155F
End voltage
per cell
5min
15min
30min
45min
1h
2h
3h
4h
5h
6h
8h
10h
12h
20h
24h
1.60V
502
270
164
119
96.1
55.1
43.2
33.1
28.9
25.1
19.5
16.1
13.65
8.46
7.07
1.67V
472
260
161
118
95.6
54.8
42.4
32.9
28.7
25.0
19.3
15.8
13.45
8.39
7.01
1.70V
468
256
159
117
94.9
54.4
42.2
32.8
29.3
25.0
19.3
15.9
13.35
8.37
7.01
1.75V
430
248
158
116
93.5
53.0
41.7
32.4
28.8
24.8
19.1
15.8
13.35
8.35
7.00
NARADA POWER SOURCE CO., LTD Operation Manual for MPG Series
13
1.80V
385
231
151
112
91.1
52.6
41.4
32.3
28.1
24.3
19.0
15.6
13.25
8.27
6.99
1.83V
367
211
148
108
87.1
51.9
40.1
30.8
27.2
23.4
18.5
15.0
12.75
8.25
6.88
1.85V
344
205
137
104
84.4
50.0
39.0
30.4
26.5
22.9
17.9
14.9
12.65
8.09
6.82
MPG12V170F
End voltage
per cell
5min
15min
30min
45min
1h
2h
3h
4h
5h
6h
8h
10h
12h
20h
24h
1.60V
625
336
203
148
119.4
68.2
49.4
38.8
32.8
28.2
21.6
17.8
14.94
9.38
7.84
1.67V
588
324
200
147
118.4
67.8
48.5
38.6
32.6
27.9
21.5
17.6
14.94
9.30
7.77
1.70V
581
318
197
145
117.4
67.3
48.3
38.4
32.1
27.7
21.4
17.6
14.84
9.28
7.76
1.75V
534
309
195
144
115.3
65.6
47.7
37.9
31.9
27.5
21.2
17.5
14.84
9.26
7.76
1.80V
479
288
187
139
112.3
65.0
47.4
37.8
31.2
26.9
21.1
17.3
14.64
9.17
7.74
1.83V
457
264
183
134
107.3
64.2
45.8
36.1
30.2
26.0
20.5
16.6
13.94
9.15
7.62
1.85V
429
256
171
129
104.3
61.8
44.6
35.6
29.5
25.4
19.9
16.4
13.84
8.97
7.55
MPG12V200
End voltage
per cell
5min
15min
30min
45min
1h
2h
3h
4h
5h
6h
8h
10h
12h
20h
24h
1.60V
655
353
214
154
124.5
71.4
55.9
43.0
38.6
32.3
25.2
20.7
17.57
10.94
9.13
1.67V
616
340
210
153
123.5
71.1
54.9
42.7
38.2
32.2
24.9
20.4
17.37
10.84
9.05
1.70V
610
334
207
152
122.5
70.5
54.6
42.5
37.8
32.2
24.9
20.5
17.27
10.84
9.04
1.75V
560
324
205
151
121.5
68.7
54.0
42.0
37.3
31.9
24.6
20.3
17.27
10.74
9.03
1.80V
502
301
197
145
117.5
68.1
53.6
41.9
36.3
31.3
24.5
20.1
17.07
10.64
9.02
1.83V
479
276
193
140
112.4
67.3
51.9
40.0
35.1
30.2
23.9
19.4
16.37
10.64
8.87
1.85V
449
268
178
135
109.4
64.8
50.5
39.4
34.3
29.6
23.1
19.2
16.26
10.44
8.80
NARADA POWER SOURCE CO., LTD Operation Manual for MPG Series
14
Table 2-3 Discharge data with constant power Units: Watts per cell(25℃)
MPG12V50F
End voltage
per cell
5min
15min
30min
45min
1h
2h
3h
4h
5h
6h
8h
10h
12h
20h
24h
1.60V
274
154
96
73
58.8
33.8
26.6
20.6
18.5
15.6
12.3
10.0
8.51
5.41
4.53
1.67V
264
152
96
72
58.5
33.7
26.2
20.6
18.4
15.6
12.1
9.9
8.45
5.40
4.53
1.70V
262
150
96
72
58.3
33.5
26.2
20.5
18.2
15.6
12.1
9.9
8.37
5.38
4.52
1.75V
245
149
95
72
57.5
33.4
26.0
20.5
18.1
15.5
12.0
9.9
8.36
5.37
4.52
1.80V
229
141
93
70
57.3
33.3
25.9
20.4
17.7
15.4
12.0
9.8
8.34
5.37
4.51
1.83V
221
129
92
68
54.9
32.9
25.3
19.7
17.4
14.9
11.9
9.6
8.17
5.36
4.48
1.85V
209
126
85
65
53.2
31.8
24.6
19.4
16.9
14.6
11.5
9.5
8.12
5.26
4.44
MPG12V85F
End voltage
per cell
5min
15min
30min
45min
1h
2h
3h
4h
5h
6h
8h
10h
12h
20h
24h
1.60V
529
299
186
140
113.5
65.2
47.6
37.8
31.8
27.4
21.2
17.5
14.64
9.40
7.87
1.67V
510
293
185
139
112.4
65.0
47.0
37.7
31.8
27.2
21.1
17.4
14.64
9.37
7.86
1.70V
507
290
184
139
112.4
64.8
47.0
37.5
31.3
27.0
21.0
17.2
14.54
9.34
7.85
1.75V
478
288
184
139
110.4
64.4
46.5
37.4
31.3
27.0
20.8
17.2
14.54
9.32
7.85
1.80V
439
272
179
136
110.4
64.2
46.4
37.3
30.8
26.7
20.7
17.1
14.44
9.32
7.84
1.83V
426
250
177
132
105.4
63.4
45.3
36.0
30.1
25.9
20.6
16.6
14.04
9.30
7.78
1.85V
403
244
165
126
102.4
61.3
44.1
35.5
29.4
25.4
19.9
16.5
13.94
9.12
7.72
MPG12V100F
End voltage
per cell
5min
15min
30min
45min
1h
2h
3h
4h
5h
6h
8h
10h
12h
20h
24h
1.60V
616
348
217
163
132
75.9
55.4
44.0
37.1
31.9
24.6
20.3
17.1
10.9
9.17
1.67V
593
341
216
162
131
75.7
54.7
43.9
37.1
31.7
24.5
20.2
17.1
10.9
9.16
1.70V
590
338
215
162
131
75.4
54.7
43.7
36.5
31.5
24.4
20.0
16.9
10.9
9.15
NARADA POWER SOURCE CO., LTD Operation Manual for MPG Series
15
1.75V
557
335
215
162
129
75.0
54.1
43.6
36.5
31.5
24.2
20.0
16.9
10.9
9.15
1.80V
511
317
209
158
129
74.7
54.0
43.5
35.9
31.1
24.1
19.9
16.8
10.9
9.14
1.83V
496
291
206
154
123
73.8
52.7
42.0
35.1
30.2
23.9
19.4
16.4
10.8
9.07
1.85V
469
284
192
147
119
71.4
51.3
41.4
34.3
29.6
23.1
19.3
16.2
10.6
9.00
MPG12V105F
End voltage
per cell
5min
15min
30min
45min
1h
2h
3h
4h
5h
6h
8h
10h
12h
20h
24h
1.60V
540
304
190
166
133.5
77.1
56.3
44.6
37.6
32.4
25.1
20.7
17.35
11.13
9.32
1.67V
519
299
189
165
133.5
76.9
55.6
44.5
37.6
32.2
25.0
20.5
17.35
11.13
9.32
1.70V
516
296
188
165
132.5
76.6
55.6
44.3
37.1
32.0
24.8
20.3
17.25
11.03
9.30
1.75V
488
294
187
164
130.5
76.2
55.0
44.3
37.1
31.9
24.6
20.3
17.15
11.03
9.30
1.80V
448
278
183
160
130.5
76.0
54.8
44.2
36.4
31.6
24.5
20.2
17.15
11.03
9.28
1.83V
434
255
181
156
125.5
75.0
53.6
42.6
35.6
30.7
24.3
19.7
16.65
11.03
9.22
1.85V
411
249
169
149
121.5
72.6
52.1
42.0
34.8
30.1
23.6
19.6
16.45
10.83
9.14
MPG12V125F
End voltage
per cell
5min
15min
30min
45min
1h
2h
3h
4h
5h
6h
8h
10h
12h
20h
24h
1.60V
683
386
240
181
146.6
84.2
66.5
51.5
46.2
38.9
30.5
25.3
21.28
13.55
11.35
1.67V
658
379
238
180
145.6
84.0
65.6
51.4
46.0
39.0
30.1
25.2
21.08
13.45
11.35
1.70V
654
375
238
180
145.6
83.7
65.6
51.2
45.6
38.9
30.1
24.7
20.88
13.45
11.35
1.75V
611
372
237
179
142.6
83.2
65.0
51.1
45.3
38.8
29.8
24.6
20.88
13.35
11.35
1.80V
570
351
232
175
142.6
83.0
64.8
51.0
44.3
38.4
29.8
24.5
20.78
13.45
11.24
1.83V
549
322
229
170
136.5
81.9
63.3
49.2
43.3
37.2
29.5
23.9
20.38
13.35
11.24
1.85V
521
315
213
163
132.5
79.3
61.5
48.5
42.3
36.5
28.6
23.7
20.28
13.15
11.14
MPG12V150F
End voltage
per cell
5min
15min
30min
45min
1h
2h
3h
4h
5h
6h
8h
10h
12h
20h
24h
1.60V
955
540
336
253
203.8
117.5
85.9
68.1
57.4
49.5
38.4
31.4
26.51
16.97
14.26
NARADA POWER SOURCE CO., LTD Operation Manual for MPG Series
16
1.67V
919
530
333
252
202.8
117.5
84.7
68.0
57.4
49.2
38.1
31.2
26.51
16.87
14.26
1.70V
913
524
333
251
202.8
116.5
84.7
67.7
56.6
48.8
37.9
31.0
26.20
16.87
14.16
1.75V
864
520
332
251
199.8
116.5
83.9
67.7
56.5
48.7
37.4
30.9
26.20
16.87
14.16
1.80V
793
491
324
245
198.8
115.5
83.6
67.5
55.6
48.2
37.4
30.8
26.20
16.87
14.16
1.83V
768
450
320
238
190.8
114.5
81.7
65.0
54.4
46.8
37.0
30.0
25.40
16.77
14.06
1.85V
728
439
298
228
184.7
110.4
79.5
64.2
53.0
45.9
35.9
29.8
25.10
16.47
13.96
MPG12V150FB
End voltage
per cell
5min
15min
30min
45min
1h
2h
3h
4h
5h
6h
8h
10h
12h
20h
24h
1.60V
734
415
258
216
175
101
79.5
61.5
55.3
46.5
36.5
29.9
25.5
16.2
13.5
1.67V
707
407
257
215
174
101
78.4
61.5
55.0
46.5
36.1
29.7
25.3
16.1
13.5
1.70V
702
402
257
214
173
99.7
78.4
61.2
54.4
46.5
36.0
29.5
25.0
16.1
13.5
1.75V
655
399
256
214
171
99.7
77.6
61.2
54.1
46.3
35.6
29.4
25.0
16.1
13.5
1.80V
612
377
249
209
170
99.7
77.3
61.0
52.9
45.9
35.6
29.3
24.9
16.1
13.5
1.83V
590
346
247
202
164
97.7
75.6
58.7
51.8
44.5
35.2
28.5
24.4
16.0
13.4
1.85V
559
338
230
195
159
94.8
73.5
58.0
50.5
43.6
34.2
28.4
24.2
15.7
13.3
MPG12V155F
End voltage
per cell
5min
15min
30min
45min
1h
2h
3h
4h
5h
6h
8h
10h
12h
20h
24h
1.60V
839
475
296
222
181.0
104.0
82.1
63.6
57.1
48.2
37.9
31.0
26.41
16.77
14.06
1.67V
809
466
293
221
180.0
104.0
81.0
63.5
56.8
48.2
37.4
30.8
26.20
16.67
14.06
1.70V
804
461
293
220
179.0
103.0
81.0
63.2
56.2
48.2
37.3
30.6
25.90
16.67
14.06
1.75V
750
457
292
220
177.0
103.0
80.2
63.2
55.9
48.0
36.9
30.5
25.90
16.67
14.06
1.80V
701
432
285
215
176.0
103.0
79.9
63.0
54.7
47.6
36.9
30.4
25.80
16.67
13.96
1.83V
676
396
282
208
169.0
101.0
78.1
60.7
53.5
46.2
36.5
29.6
25.30
16.57
13.86
1.85V
640
387
262
200
164.0
98.0
76.0
59.9
52.2
45.3
35.4
29.4
25.10
16.26
13.75
MPG12V170F
NARADA POWER SOURCE CO., LTD Operation Manual for MPG Series
17
End voltage
per cell
5min
15min
30min
45min
1h
2h
3h
4h
5h
6h
8h
10h
12h
20h
24h
1.60V
1044
591
368
277
223.7
128.4
94.0
74.5
62.9
54.2
41.9
34.4
28.99
18.56
15.55
1.67V
1006
579
365
275
222.7
128.4
92.8
74.4
62.9
53.9
41.7
34.2
28.99
18.56
15.55
1.70V
1000
573
365
275
221.7
127.4
92.8
74.1
61.9
53.5
41.4
33.9
28.69
18.46
15.55
1.75V
934
568
363
275
218.7
127.4
91.8
74.0
61.9
53.3
41.0
33.9
28.69
18.46
15.55
1.80V
856
537
355
268
217.7
126.4
91.6
73.8
60.9
52.8
40.9
33.7
28.59
18.46
15.55
1.83V
818
493
350
260
208.6
125.4
89.5
71.1
59.6
51.2
40.5
32.9
27.78
18.35
15.35
1.85V
765
481
326
249
202.6
121.4
87.0
70.2
58.1
50.2
39.3
32.6
27.48
18.05
15.25
MPG12V200
End voltage
per cell
5min
15min
30min
45min
1h
2h
3h
4h
5h
6h
8h
10h
12h
20h
24h
1.60V
1096
619
386
290
233.9
134.5
106.4
82.3
73.9
62.2
48.8
40.1
34.04
21.59
18.07
1.67V
1055
608
383
288
232.9
134.5
105.4
82.2
73.6
62.1
48.3
39.8
33.73
21.59
18.07
1.70V
1048
601
383
288
231.9
133.5
105.4
81.9
72.9
62.2
48.2
39.6
33.43
21.49
18.07
1.75V
979
597
381
287
228.9
133.5
103.4
81.8
72.5
61.9
47.7
39.5
33.43
21.49
18.07
1.80V
914
563
372
280
227.9
132.5
103.4
81.6
70.8
61.3
47.7
39.3
33.33
21.49
18.07
1.83V
881
516
368
272
218.9
131.5
101.4
78.6
69.3
59.6
47.2
38.3
32.63
21.39
17.87
1.85V
835
504
342
261
211.8
126.5
98.4
77.6
67.6
58.4
45.8
38.0
32.43
20.98
17.77
NARADA POWER SOURCE CO., LTD Operation Manual for MPG Series
18
Chapter Three Operation and Maintenance
1. Operation Conditions
Ambient temperature: MPG series optimum temperature is 15℃～25℃, the higher and
lower temperatures will impact battery performance
Operation temperature range
Operate status
Temperature range
Optimum temperature
Discharge
-40℃～50℃
15℃～25℃
Charge
-20℃～50℃
15℃～25℃
Storage
-20℃～40℃
15℃～25℃
Ambient humidity：≤95％
Cabinet ventilation conditions: meet the standard EN 50272-2:2001
2. Capacity
2.1.Capacity of battery
The capacity of battery is the capacity that battery can be discharged on the established
conditions, expressed as signal C. The usual unit of capacity is ampere hour, abbreviate AH.
The capacity can be expressed in Rated Capacity or Actual Capacity. The Rated Capacity of
MPG batteries please see Table 1-1. The Actual Capacity is the product of the discharge current
and the discharge time, the unit is AH.
2.2. The Influence Factor of the Actual Capacity
The actual capacity is mainly related with the positive and negative active materials and their
utilization ratio. The utilization ratio of the materials is mainly influenced by the DOD, the
structure of the battery and manufacture technology. In using process the factors that influence the
actual capacity are discharge rate, depth of discharge, end voltage and temperature.
2.3. Discharge Rate
The discharge rate is often described as hour-rate and multiple rates.
If the discharge rate is higher and the discharge current is larger, then the discharge time is
shorter, and the capacity which can be discharged is less.
2.4. End voltage
The end voltage is the lowest working voltage below which the battery can’t be discharged
any more or it will harm the battery. Usually the 10hr rate end voltage of MPG battery is
NARADA POWER SOURCE CO., LTD Operation Manual for MPG Series
19
1.80V/cell. The batteries are not able to discharge more capacity even if the end voltage is lower
because of characteristics of gel battery, yet the low end voltage makes great harm to the battery.
It will greatly shorten batteries’ life especially to discharge the battery to 0V while not to recharge
in time. Thus the end voltage should not be lower than what is described in table 3-2, or it will
cause over-discharge and make recharge fail after several times of over-discharge.
Table 3-2 Discharge End-voltage
Discharge Current（A）
Discharge End Voltage（V/Cell）
I＜0.2C
1.80
0.2C≤I＜0.5C
1.70
0.5C≤I＜1.0C
1.55
I≥1.0C
1.30
3. Temperature
3.1. Available Capacity Vs. Ambient Temperature
Temperature affects capacity of the battery. Fig. 3-1 is the available capacity curve vs.
ambient temperature. if the temperature drops, the capacity will decrease, for example, the
capacity will decrease to 85% of rated capacity if temperature decreases from 25℃ to 0℃; and
too low temperature will cause battery long term insufficient charged, also will cause no
discharge and negative plates sulfate.
The MPG series using the polymer gel technology, this technology leverages on the
advantages of the AGM and Tubular gel technology to provide the excellent temperature
tolerance ability, the operation temperature range is -40℃ to 50℃ and the storage and
transportation temperature range is -20℃ to 40℃. The standard data is the test result at 25℃.
The standard data is the test result at 25℃,the capacity will increase when temperature
raises. For example the capacity will increase to 102% of rated capacity if temperature increase
from 25℃ to 50℃. But it will quicken plates’ corrosion and water loss if temperature raises, and
shorten battery’s life.
NARADA POWER SOURCE CO., LTD Operation Manual for MPG Series
20
Fig.3-1 Available Capacity VS. Ambient Temperature
3.2. Temperature and Floating Voltage
The purpose of choosing proper floating voltage is to make the battery operate in a best
condition. If the floating voltage is higher, then the floating current is also higher, it will accelerate
corruption of the grid and shorten life of the battery. If the floating voltage is lower, the battery
can’t be kept in fully charged state; this will crystallize PbSO4, decrease the capacity, and also
shorten the life of the battery.
At 25℃, the proper floating voltage for MPG series is 2.25V/cell. And temperature
compensate coefficient is -3mV/℃/cell.
The formula to calculate float voltage at different temperature:
VT=2.25-(T-25)×0.003
VT—Floating charge voltage at T temperature
Table 3-2 Floating charge voltage at different temperature
Ambient Temperature
（℃）
Floating Voltage
（V/Cell）
≤5
2.31
10
2.30
NARADA POWER SOURCE CO., LTD Operation Manual for MPG Series
21
15
2.28
20
2.27
25
2.25
30
2.24
35
2.22
≥40
2.21
Note: If ambient temperature below 5℃ or above 40℃, temperature compensate is no longer
go on.
3.3. Temperature and equalization charge
GEL battery needs equalization charge periodically to guarantee normal operation. At 25℃, the
proper equalization voltage for MPG series is 2.4V/cell. And temperature compensate coefficient
is -5mV/℃/cell.
The formula to calculate equalization voltage at different temperature:
VT=2.4-(T-25)×0.005
VT—Equalization charge voltage at T temperature
3-3 Equalization charge voltage at different temperature
Ambient
Temperature（℃）
Equalization charge
Voltage（V/Cell）
≤5
2.50
10
2.48
15
2.45
20
2.43
25
2.40
30
2.38
35
2.35
≥40
2.33
Note: If ambient temperature below 5℃ or above 40℃, temperature compensate is no longer
go on.
3.4. Ambient Temperature Vs. Battery Life
Higher temperature will harm the battery and reduce battery life. When temperature
exceeds 25℃, the battery life will decrease half per 10℃ temperature raise. For example, the
NARADA POWER SOURCE CO., LTD Operation Manual for MPG Series
22
designed life of battery at 25℃ is 5 years, when battery operates at 35℃, the actual life is only
2.5 years.
t25＝tT×2
（T－25）
/10
Notes：T the actual ambient temperature;
tT is designed life at T ambient temperature
t25 is designed life at 25℃ ambient temperature
The heats disseminate performance of GEL battery is bad, it’s liable to cause thermal run
away when heat accumulates. Please improve ventilation and temperature condition when room
temperature is high. The distances between batteries should not be smaller than 10mm. Please
also adjust the float voltage and equalization voltage according the manual.
4. Charge and discharge requirements
4.1. Equalization charge
Equalization charge is needed in following conditions:
－ The voltage of at least two batteries are lower than 2.17V/cell
－ Floating operation for more than three months
The method of equalization charge is: First charge the batteries on the constant current of
not larger than 0.2C20A till the average voltage of the batteries increases to 2.40V/cell（25℃），
then charge the batteries with constant voltage of 2.40V/cell, the time of equalization charge is
24 hours.
4.2. Charge
Charge the batteries in following conditions. The method is same as that of equalization
charge.
－ After discharge
－ Finish installation
－ Storage time is above three months and open circuit voltage is lower than 2.10V/cell.
If battery need to be fully charged as soon as possible, then fast charge method can be
adopted: limit current less than 0.25C10A, charge voltage 2.40V/cell（25℃）.
Whether the batteries are fully charged can be decided according to any one of two
standards as follows:
－ The charge time is 18-24 hours (the charge time can be shortened when the batteries
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were not deep discharged, e.g., the charge time of 20%DOD batteries can be shortened to 10
hours).
－ On condition of constant voltage, the value of charge current hasn’t varied for
continuous three hours.
5. Storage
All gel batteries experience self-discharge in open circuit. The result is that open circuit
voltage decreases, and the capacity also decreases. During storage please note:
－ The self-discharge rate is related with ambient temperature. The self-discharge rate is
smaller when the ambient temperature is lower, otherwise is larger. The required temperature of
MPG batteries’ storage environment is from 0℃ to 35℃. The storage place must be clean,
ventilated and dry.
－ An important parameter in storage is open circuit voltage, which is related with density
of the electrolyte. If the open circuit voltage is lower than 2.17V/cell, or or storage period reach 3
to 6 months shown in following table, the batteries should be supplemental charged to avoid
damage caused by self discharge.
Storage temperature
Max. Storage period
Above 30℃
3 months
Below 30℃
6 months
－ All batteries, which are ready to store, should be fully charged before storage. It’s
suggested to record the storage time in the periodic maintenance record and record the time
when another necessary supplemental charge should be made.
－ The quality certificates and packages of MPG batteries record the latest charge time of
the batteries, next charge time can be calculated according to this charge time.
Fig. 3-2 Available Capacity VS. Storage Time at Different Ambient Temperature。
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Capacity(%)
Storage Time(month)
3
6 9 12
15 18 21
24
27
50
25
75
30 C
O
(86 F)
O
20 C(68 F)
OO
40 C
O
(104 F)
O
10 C(50 F)
OO
100
6. Maintenance
In order to assure service life, the batteries should be correctly inspected and maintained.
The maintenance methods of MPG batteries are recommended as follows
6.1. Monthly Maintenance
Implement following inspection every month:
— Keep the battery-room clean.
— Measure and record the ambient temperature of the battery-room.
— Check each battery’s cleanness; check damage and overheating trace of the terminal,
container and lid.
— Measure and record the total voltage and floating current of the battery system.
6.2. Quarterly Maintenance
— Repeat monthly inspection.
— Measure and record floating voltage of every on-line battery. If more than two cells’
voltage is less than 2.17V/cell after temperature adjustment, the batteries need to be
equalization charged. If the problem still exists after adopting above-mentioned measures, the
batteries need yearly maintenance or even three years’ maintenance. If all methods are
ineffective, please contact us.
6.3. Yearly Maintenance
— Repeat quarterly maintenance and inspection.
— Check whether connectors are loose or not every year.
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— Make a discharge test to check with exact load every year, discharging 30-40% of rated
capacity.
6.4. Three-year Maintenance
Make a 80% capacity test every year after three years’ operation.
6.5. Operation and Maintenance Precautions
－ Insufficient Charge
If the floating voltage is not set correctly (too low or not amend according to temperature),
the battery system will in an insufficient charge state for a long period of time. When the
electricity is out, the battery may not be able to work and the capacity is decreased.
－ Over Charge
Please do not neglect the performance of rectify to transfer floating charge to equalization
charge. If the rectify cannot transfer charge modes because of its wrong performance or no
adjustment, the battery system is always in an equalization charge state. Thus may cause serious
problems for battery, such as water loss, life decrease, heat out of control, deformation, etc.
－ Too low or too high temperature
We have mentioned that too low temperature will affect the capacity of battery. While too
high temperature will also cause problems, such as water loss, life decrease, heat out of control,
deformation, etc.
－ Too low end voltage
The end voltage is also an important parameter for battery. The battery shall stop
discharge when reach a certain voltage (The normal end voltage is 1.80V/cell per block at 10h
rate). If the end voltage is too low, it will be difficult to recharge the battery and decrease the
charge efficiency, thus reduce the life of battery.
－ Put the battery aside after discharge
If the battery is put aside without charge for a long time after discharge, it will affect the
capacity and life of the battery. Because some large size PbSO4 will create in the negative which
are difficult to transfer to active Pb.
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After-sales Service / Customer Service Hotline
NARADA POWER SOURCE CO.,LTD.
Building A, No.822 Wen’er West Road, Hangzhou, China
Tel: +86-571-56975980 Fax: +86-571-56975955
Website: www.naradapower.com E -mail: intl@narada.biz
NARADA ASIA PACIFIC PTE. LTD.
Block 9 Khaki Bukit Road 1 #02-10 Eunos Technolink, Singapore 415938
Email: sales@narada-ap.com Tel: +65-6848 1191 Fax: +65-6749 3498
Website: www.narada-ap.com
NARADA EUROPE (UK) LIMITED
Spectrum House, Dunstable Road, Redbourn, St. Albans, Herts Al3 7PR
Tel: +44 (0)845 612 2031
E-mail: sales@naradaeurope.com
MPG series operation ma
nual – V4.7 –N- EN Apr. 2018 – Subject to revisio without prior notice E.&O.E.
NARADA POWER SOURCE CO., LTD Operation Manual for MPG Series
27
Annex 1
GEL Battery Regular Maintenance Record
Type Place
Test Status Qty
Total Voltage（V）
Current(A)
Room Temperature
No.
Voltage（V）
No.
Voltage（V）
1 13 2 14 3 15
4 16
5 17 6 18 7 19 8 20 9 21 10 22 11 23 12 24 Check by sight
Result：
Tester
Date
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