Narada Power Source CO., LTD TT Series Battery Operation Manual
VALVER REGULATED SEAL LEAD ACID
BATTERY
OPERATION
MANUAL
Version：V3.0
TT Series
Narada Power Source Co., Ltd.
Email: intl@narada.biz Website: www.naradabattery.com
Narada Power Source CO., LTD TT Series Battery Operation Manual
Contents
Chap
Chap
Chap
Annex 1...........................................................................................................................................20
Security Instructions .........................................................................................................................3
ter One Product Introduction.................................................................................................4
1.Features..................................................................................................................................4
2. Main Applications.................................................................................................................4
3. T ypes and Dimensions..........................................................................................................4
4 Structure of battery.................................................................................................................4
5. Dimension and sketch map...................................................................................................6
6. T erm inal sketch.....................................................................................................................6
7. Working Principal .................................................................................................................4
ter T wo Technical Characteristics..........................................................................................7
1. Charge Characteristics Curve................................................................................................7
3. Internal resistance and short circuit current ..........................................................................7
4. Discharge Data with Constant Current & Constant Power ...................................................8
ter Three Operation and Maintenance .................................................................................12
1. Operation Condition............................................................................................................12
2. Capacity..............................................................................................................................12
3. T em perature........................................................................................................................13
4. Charge and discharge requirements ....................................................................................15
5. Storage................................................................................................................................16
6. Maintenance........................................................................................................................17
After-sales Service..........................................................................................................................19
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Narada Power Source CO., LTD TT Series Battery Operation Manual
Security Instructions
Please read this manual! It provides very important information for security, installation and
operation. The information will allow your equipment give a better performance and longer
service life.
■ Do not try to take apart batteries. The spare parts are not inside the battery.
Maintenance works should be done by professionals.
■ The replacement should be made or supervised by professionals with suitable
protection. The batteries for replacement should be same as the old ones in model and type.
■ Warning——Do not smoke or use fire near batteries.
■ Warning——Do not use any organic cleanser to clean batteries.
■ Warning——Do not put the batteries on fire, or they will explode
■ Warning——Do not cut open the batteries. They contain electrolyte which is toxic to
skin and eyes.。
■ Warning——Batteries may cause shock and short. Please remove the watch and
jewelry such as rings when replace the battery. Also please operate with insulating tools.
Please take care of the following marks in using
Warning
Electricity
danger
Protecting your eye
Watch
Short-circuits
With adults custody
Read the
manual
Fire
forbidden
Circle use
Do not put
batteries into
dustbin
The product has past
the UL Safe
authentication
Narada Power Source CO., LTD TT Series Battery Operation Manual
Chapter One Product Introduction
1. Features
1.1. Reliable Seal Technology
1.2 Special Patented grid alloy
1.3. Excellent high rate discharge performance
1.4. Low internal resistance AGM separator
1.5. Flame retardant ABS material container and cover compliant with UL94 V-0
1.6. Self-regulating pressure relief valve
2. Main Applications
2.1. Communication System
2.2. UPS
3. T ypes and Dimensions
Tab.1-1 Types and Dimensions
Dimensions(mm)
Type
Normal
Voltage
（V）
Rated
Capacity
C10(Ah)
L W H
WT
(Kg)
TT6V200A 6 200 366 125 250 36.5
TT12V38 12 38 250 97 198 13.7
TT12V52 12 52 220 121 246 17.8
TT12V93 12 93 308 168 212 31.5
4. Structure of battery
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Narada Power Source CO., LTD TT Series Battery Operation Manual
5. Dimension and sketch map
TT12V38
TT6V200A
TT12V93
168 [6.62]
212 [8.35]
308 [12.14]
220 [8.67]
TT12V52
121 [4.77]
245 [9.65]
6. Terminal sketch
Φ15
Φ1
8
M8
TT6V200A TT12V38 TT12V52 TT12V93
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Narada Power Source CO., LTD TT Series Battery Operation Manual
7. Working Principal
O2H2PbSOSO2HPbOPb
24422
+++
CHA
DCH
The chemical reaction takes place in lead acid battery is as follows:
Following by-reaction A takes place in ordinary lead acid battery:
A...........................O HO2H
222
↑+↑→
This by-reaction makes water loss gradually and pure water need to be added regularly to
keep the battery operate normally.
TT battery adopts design of barren-liquor and utilizes AGM (micro porous glass fiber)
separator. Thus there is a path existing between the positive and the negative. Also special alloy
grid is chosen to increase vent hydrogen over-potential gassing on the negative plate, which
prevent generation of Hydrogen. Otherwise, the oxygen generated from positive diffuses through
separator to the negative and the oxygen gas reacts quickly and is recombined into water. The
reactions are as follows B and C:：
B...........................2PbOO 2Pb
2
→+
C......OH PbSOSOH PbO
2442
+→+
So it is possible to build TT battery in sealed structure.
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Narada Power Source CO., LTD TT Series Battery Operation Manual
7
Fig. 2-1 Recharge characteristics curve of with initial 0.1C
10
A current and limit
volt
namic nonlinear parameter that is continuously
change
t (25℃)
Chapter Two T echnical Characteristics
1. Charge Characteristics Curve
age 2.40V/cell (25 ).℃
2. Internal resistance and short ci
rcuit current
The internal resistance of the battery is a dy
d 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 according to the IEC60896 standard.
Table 2-1 Internal resistance and short circui
Type Internal Resistance(mΩ) Short Circuit Current (A)
TT6V200A 1.60 5598
TT12V38 11.7 860
TT12V52 9.80 1298
TT12V93 5.80 2190
Note: Shor current will decrease ltage of the battery to 0V, an mage the
inte
0 2 4 6 8 1012141618202224
rnal components of the battery.
t circuit the vo d da
0
1
2
3
4
5
6
12.6
12.8
13.0
13.2
13.4
13.6
13.8
14.0
14.2
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
Charging Current (A)
Charging Voltage(V)
Charged Electric Volume Timeٛ
Time(h)
Current
Electric Volume
Voltage
Narada Power Source CO., LTD TT Series Battery Operation Manual
4．The discharge data of TT series
Table 2-2 Constant current discharge characteristic Units: Amperes(25℃)
End voltage
per cell
5min 15min 30min 45min 1h 2h 3h 4h 5h 6h 8h 10h 12h 20h 24h
TT6V200A
1.60V
699.6 385.1 241.5 181.1 145.1 80.7 58.3 45.7 38.2 32.7 25.9 20.9 18.0 12.1 10.1
1.67V
655.3 368.2 238.1 179.9 143.9 79.5 57.6 45.4 38.0 32.6 25.8 20.8 18.0 12.1 10.0
1.70V
570.5 328.8 234.3 178.4 142.7 78.8 57.2 44.9 37.6 32.3 25.5 20.7 17.9 11.9 10.0
1.75V
515.4 343.7 226.3 174.6 139.7 77.8 56.2 44.4 37.2 32.0 25.2 20.6 17.8 11.9 9.8
1.80V
502.5 315.9 215.8 170.8 136.7 76.8 55.1 43.9 36.8 31.8 25.0 20.4 17.5 11.6 9.7
1.83V
451.8 293.8 205.1 164.3 131.4 73.9 54.2 42.6 35.7 30.9 24.3 20.3 17.0 11.3 9.5
1.85V
410.1 280.5 198.2 159.4 127.6 72.8 53.3 41.9 35.2 30.6 24.0 20.1 16.8 11.1 9.4
End voltage
per cell
5min 15min 30min 45min 1h 2h 3h 4h 5h 6h 8h 10h 12h 20h 24h
TT12V38
1.60V 137 73.8 44.7 32.4 26.2 15.1 10.9 8.6 7.22 6.20 4.76 3.92 3.30 2.07 1.72
1.67V 129 71.2 43.9 32.2 26.0 14.9 10.7 8.5 7.18 6.15 4.71 3.87 3.30 2.05 1.71
1.70V 128 69.9 43.3 31.9 25.9 14.8 10.7 8.5 7.07 6.10 4.66 3.86 3.26 2.05 1.71
1.75V 117 67.7 42.9 31.7 25.4 14.5 10.5 8.3 7.03 6.05 4.61 3.84 3.26 2.04 1.71
1.80V 105 63.1 41.1 30.4 24.8 14.3 10.5 8.3 6.88 5.93 4.56 3.80 3.24 2.02 1.70
1.83V 100 57.9 40.3 29.4 23.8 14.2 10.1 8.0 6.66 5.72 4.52 3.66 3.08 2.02 1.68
1.85V 94.3 56.1 37.5 28.2 23.0 13.6 9.8 7.8 6.50 5.60 4.37 3.63 3.04 1.97 1.67
End voltage
per cell
5min 15min 30min 45min 1h 2h 3h 4h 5h 6h 8h 10h 12h 20h 24h
TT12V52
Narada Power Source CO., LTD TT Series Battery Operation Manual
1.60V 188 101 61.2 44.3 35.8 20.6 14.9 11.7 9.88 8.49 6.51 5.36 4.52 2.83 2.36
1.67V 176 97.4 60.1 44.0 35.6 20.4 14.6 11.6 9.83 8.41 6.44 5.30 4.51 2.80 2.34
1.70V 175 95.7 59.3 43.7 35.4 20.3 14.6 11.6 9.67 8.35 6.37 5.28 4.46 2.80 2.34
1.75V 160 92.7 58.7 43.4 34.8 19.8 14.4 11.4 9.62 8.28 6.31 5.25 4.46 2.79 2.34
1.80V 144 86.4 56.2 41.6 33.9 19.6 14.3 11.4 9.42 8.11 6.24 5.20 4.43 2.76 2.33
1.83V 137 79.2 55.2 40.2 32.5 19.4 13.8 10.9 9.11 7.83 6.18 5.01 4.21 2.76 2.30
1.85V 129 76.7 51.3 38.6 31.5 18.6 13.4 10.7 8.89 7.66 5.98 4.97 4.16 2.70 2.28
TT12V93
1.60V
302 163 98.5 71.4 57.7 33.1 25.9 19.9 17.9 15.0 11.7 9.67 8.14 5.06 4.23
1.67V
284 157 96.8 70.8 57.3 32.9 25.4 19.8 17.7 15.0 11.5 9.58 8.06 5.01 4.19
1.70V
281 154 95.4 70.3 56.9 32.6 25.3 19.7 17.5 14.9 11.5 9.47 7.98 5.00 4.19
1.75V
258 149 94.5 69.8 56.1 31.8 25.0 19.4 17.3 14.8 11.3 9.39 7.98 4.99 4.18
1.80V
232 139 90.5 66.9 54.6 31.5 24.8 19.4 16.8 14.5 11.2 9.30 7.92 4.94 4.17
1.83V
221 127 88.8 64.7 52.3 31.1 24.0 18.5 16.3 14.0 11.0 8.95 7.60 4.93 4.11
1.85V
207 124 82.5 62.1 50.6 30.0 23.4 18.3 15.9 13.7 10.7 8.88 7.55 4.84 4.07
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Narada Power Source CO., LTD TT Series Battery Operation Manual
Table 2-3 Discharge data with constant power Units: Watts (25℃)
End voltage
per cell
5min 15min
30min
45min 1h 2h 3h 4h 5h 6h 8h 10h 12h 20h 24h
TT6V200A
1.60V
1188 680 438 335 270 156 109 89.0 73.2 63.8 48.1 41.0 34.5 22.7 18.9
1.67V
1135 656 434 332 269 154 108 88.5 72.8 63.5 47.9 40.8 34.4 22.7 18.8
1.70V
1110 649 430 329 266 153 107 87.7 72.1 62.8 47.4 40.4 34.3 22.6 18.8
1.75V
1031 625 415 324 262 151 106 86.6 71.1 61.8 46.9 40.0 33.8 22.3 18.7
1.80V
929 585 393 317 257 149 104 85.6 70.0 60.8 46.1 39.4 33.6 22.0 18.5
1.83V
850 556 382 308 250 144 102 83.6 68.8 59.0 45.2 38.5 33.4 21.7 18.2
1.85V
791 531 373 298 241 141 101 82.8 68.0 58.7 44.5 38.2 32.8 21.4 18.1
End voltage
per cell
5min 15min 30min 45min 1h 2h 3h 4h 5h 6h 8h 10h 12h 20h 24h
TT12V38
1.60V 229 129 81.1 60.8 49.3 28.4 20.7 16.4 13.8 11.9 9.21 7.60 6.39 4.09 3.43
1.67V 221 127 80.4 60.4 49.0 28.3 20.5 16.4 13.8 11.8 9.13 7.53 6.39 4.08 3.43
1.70V 220 126 80.4 60.4 48.8 28.1 20.5 16.3 13.7 11.8 9.06 7.45 6.33 4.07 3.42
1.75V 208 125 79.7 60.2 48.1 28.0 20.2 16.3 13.7 11.8 8.92 7.45 6.33 4.06 3.42
1.80V 191 118 78.2 58.8 48.0 27.9 20.2 16.2 13.4 11.6 8.92 7.45 6.31 4.06 3.41
1.83V 185 108 76.7 57.0 46.0 27.6 19.7 15.6 13.1 11.3 8.92 7.24 6.12 4.05 3.39
1.85V 175 105 71.5 54.7 44.6 26.7 19.1 15.4 12.8 11.0 8.62 7.18 6.05 3.98 3.36
End voltage
per cell
5min 15min 30min 45min 1h 2h 3h 4h 5h 6h 8h 10h 12h 20h 24h
TT12V52
1.60V
314 177 111 83.2 67.4 38.8 28.3 22.5 18.9 16.3 12.6 10.4 8.74 5.60 4.69
1.67V
302 174 110 82.7 67.0 38.7 28.0 22.4 18.9 16.2 12.5 10.3 8.74 5.58 4.69
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Narada Power Source CO., LTD TT Series Battery Operation Manual
11
1.70V
301 172 110 82.6 66.8 38.5 28.0 22.3 18.7 16.1 12.4 10.2 8.66 5.57 4.68
1.75V
284 171 109 82.4 65.8 38.3 27.7 22.3 18.7 16.1 12.2 10.2 8.66 5.55 4.68
1.80V
261 162 107 80.4 65.7 38.2 27.6 22.2 18.3 15.9 12.2 10.2 8.63 5.55 4.67
1.83V
253 148 105 78.0 63.0 37.7 27.0 21.4 17.9 15.4 12.2 9.91 8.37 5.54 4.64
1.85V
239 144 97.9 74.9 61.0 36.5 26.2 21.1 17.5 15.1 11.8 9.83 8.28 5.44 4.60
TT12V93
1.60V
505 285 178 134 108 62.4 49.3 38.1 34.2 28.9 22.6 18.7 15.8 10.0 8.39
1.67V
487 280 177 133 108 62.3 48.6 38.1 34.1 28.9 22.4 18.7 15.6 10.0 8.39
1.70V
484 277 177 133 108 62.0 48.6 37.9 33.7 28.8 22.3 18.3 15.5 10.0 8.37
1.75V
451 275 176 133 106 61.7 48.1 37.9 33.6 28.7 21.9 18.3 15.5 9.93 8.37
1.80V
422 260 172 129 106 61.5 48.0 37.8 32.8 28.4 21.7 18.2 15.4 9.93 8.35
1.83V
407 238 170 126 101 60.7 46.9 36.4 32.1 27.6 21.9 17.7 15.1 9.91 8.30
1.85V
385 233 158 121 98.2 58.8 45.6 35.9 31.3 27.0 21.2 17.6 15.0 9.72 8.23
Narada Power Source CO., LTD TT Series Battery Operation Manual
Chapter Three Operation and Maintenance
1. Operation Condition
Ambient Temperature: -40℃～＋55℃(Best temperature 20℃～25℃)
Ambient Humidity: ≤95％
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, shortened as AH.
The capacity can be expressed in Rated Capacity or Actual Capacity. The Rated Capacity of
TT battery 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 curren t 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 TT battery is 1.80V/cell.
The batteries are not able to discharge more capacity even if the end voltage is lower because of
characteristics of lead acid 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 3-1, or it will
cause over-discharge and make recharge fail after several times of over-discharge.
Narada Power Source CO., LTD TT Series Battery Operation Manual
Table 3-1 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. A va ilable 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 80% 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.
Though VRLA battery can be operated at -15℃, 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.
-40 -30 -20 -10 0 10 20 30 40 50 60
0.0
0.2
0.4
0.6
0.8
1.0
1.2
Ambient Tempersture(
℃)
electric Capacity(%)
Fig.3-1 A vailable Capacity VS. Ambient Temperature
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Narada Power Source CO., LTD TT Series Battery Operation Manual
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 PbSO
4
, decrease the capacity,
and also shorten the life of the battery.
At 25℃ , the proper floating voltage for TT series is 2.25V/cell. And temperature
compensate coefficient is -3mV/℃/cell.
The formula to calculate float voltage at different temperature:
V
T
=2.25-(T-25)×0.003
V
T
—Floating charge voltage at T te m perature
T ab le 3-2 Floa ting charge voltage at different temperature
Ambient Temperature
（℃）
Floating Voltage
（V/Cell）
0
2.33
5
2.31
10
2.30
15
2.28
20
2.27
25
2.25
30
2.24
35
2.22
40
2.21
3.3. Temperature and equalization charge
VRLA battery needs equalization charge periodically to guarantee normal operation. At 25℃, the
proper equalization voltage for TT series is 2.4V/cell. And temperature compensate coefficient is
-5mV/℃/cell.
The formula to calculate equalization voltage at different temperature:
V
T
=2.4-(T-25)×0.005
V
T
—Equalization charge voltage at T temperature
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Narada Power Source CO., LTD TT Series Battery Operation Manual
3-3 Equalization charge voltage at different temperature
Ambient
Temperature（℃）
Equalization charge
Voltage（V/Cell）
0 2.53
5 2.50
10 2.48
15 2.45
20 2.43
25 2.40
30 2.38
35 2.35
40 2.33
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
designed life of battery at 25℃ is 5 years, when battery operates at 35℃, the actual life is only
2.5 years.
t
25＝tT
×2
（T－25）
/10
Notes：T the actual ambient temperature;
t
T
is designed life at T ambient temperature
t
25
is designed life at 25℃ ambient temperature
The heats disseminate performance of VRLA 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 accordi ng th e 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 2.18V/cell
－ Floating operation for more than three months
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Narada Power Source CO., LTD TT Series Battery Operation Manual
The method of equalization charge is: First charge the batteries on the constant current of
not larger than 0.2C
20
A 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 0.25C
20
A, 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
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 lead acid 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
TT 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 have been stored for
three months, the batteries should be supplemental charged to avoid damage caused by self
discharge.
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Narada Power Source CO., LTD TT Series Battery Operation Manual
－ All batteries, which are ready to store, should be fully charged before storage. It’s
suggested to record the storage ti me in the pe ri od ic main t en anc e re cord and re co rd th e time wh e n
another necessary supplemental charge should be made.
－ The quality certificates and packages of TT 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。
Cap
acit
y(%
)
Storage Time(month)
3
6912
15 18 21
24
27
50
25
75
30 CO(86 F)
O
20 C(68 F)
OO
40 CO(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 TT 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
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Narada Power Source CO., LTD TT Series Battery Operation Manual
contact us.
6.3. Yearly Maintenance
— Repeat quarterly maintenance and inspection.
— Check whether connectors are loose or not every year.
— Make a discharge test to check with exact load every year, discharging 30-40% of rated
capacity.
6.4. Three-year Maintenance
Make an 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 because the acid is satirized 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
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Narada Power Source CO., LTD TT Series Battery Operation Manual
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 PbSO
4
will create in the negative which
are difficult to transfer to active Pb.
After-sales Service / Customer Service Hotline
P.R. China:
Narada Power Source Co., Ltd.
No. 459 Wensan Road Hangzhou, China
Tel: +86-571-28827007; 28827008
Fax: +86-571-85126942
Email: service@narada.biz
Asia
Narada Asia Pacific Pte. Ltd.
65 Ubi Crescent Hola Centre
#08-02 Singapore 408559
Tel: +65 6848 1191
Fax: +65 6749 3498
Email: sales@narada.com.sg
TT – V3.0 - EN January 2008 – Subject to revision without prior notice
19
Narada Power Source CO., LTD TT Series Battery Operation Manual
Annex 1
VRLA 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
20
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