Power Master PM-DBC-1012DF, PM-DBC-0612F, PM-DBC-0424F, PM-DBC-0124F, PM-DBC-0724DF User Manual

Power Master

AC/DC DIGITAL BATTERY CHARGER

DBC Series

USER MANUAL

1

CONTENTS

Introduction....................................................................................................................2

Battery Charger Features..............................................................................................2

Safety Instruction..........................................................................................................4

LCD (Digital Meter) Display Guide ...............................................................................6

Front Panel & Back Panel Display ...............................................................................8

Charging Curve LED Indication..................................................................................16

Battery Charging Instruction......................................................................................18

Specification................................................................................................................19

2

INTRODUCTION

Power Master Digital Battery Charger, or DBC in short, is a smart and light weighted battery charger
with unique LCD & LED Displays to allow users to read all information while charging, and to adjust
charging current, charging time, etc. With this smart battery charger, dual output and pulse charge
are also available with larger power models. To prolong battery lifespan, protections, pre-charge,
and automatic multi-rate charging functions are specially designed for this purpose.

BATTERY CHARGER FEATURES

Using DBC series battery chargers can save more than 25% of main power cost, and in addition to
protect your batteries and to extend lifespan of batteries.

Main Features

1. Unique LCD (digital meter) Display

For all models except 2Amp(12Vdc), 6Amp(12Vdc), 1Amp(24Vdc), and 4Amp(24Vdc), a unique
LCD Display is attached for indicating both status of the charger and battery level, voltage,
current and capacity. This further extends the function of a battery charger as it is now more
intelligent and more user-friendly. Adjustments for charging current and charging time are
possible.

2. LED Display

Clear and easy to understand LED Displays: Red (power), Green (floating charge), Orange
(equalizer charge)

3. Automatic Multi-Rate Charging Function

The DBC chargers are able to detect the rate of current needed during charging and enable
pre-charge, equalizer charge, or floating charge accordingly.

4. Dual Output

For models with 25Amp(12Vdc), 14Amp(24Vdc), 9Amp(36Vdc), 7Amp(48Vdc) and above, dual
output is designed for connecting to two battery banks and charging both batteries at the same
time. Each output has one rectifier to prevent countercurrent from happening. Ideally, the two
battery banks should have same battery capacity, else the unbalance in different capacities may
cause over charging.

5. Pulse charge

For models with 45Amp(12Vdc), 23Amp(24Vdc), 15Amp(36Vdc), 11Amp(48Vdc) and above,
this function is available to fully charge the batteries and to increase the charging efficiency. For
all other models except 2Amp(12Vdc), 6Amp(12Vdc), 1Amp(24Vdc), and 4Amp(24Vdc), pulse
charge at beginning can be added for 12V and 24V upon request.

3

6. Pre-charge

When batteries are over discharged, bulk charging could damage the batteries. In order to
prevent this from happening, pre-charge function will be initiated automatically once the charger
detects battery voltage under 10V. When start charging, the charging current is limited to 50%
and pre-charge timer will start counting for 30 minutes. If the battery voltage increases to above

11.5V within 30 minutes, the charging current will return to 100% again.
This function is available for models
12Vdc: 10A~30Amp 24Vdc: 7A~17Amp 36Vdc: 4A~11Amp 48Vdc: 3A~8Amp

7. Cooling fan controlled by floating voltage

When reaching to floating stage, rotating speed of the fan will slow down or the fan will stop in
order to increase lifespan of fan. During bulk charging, the fan will rotate in fast speed to
lowering the temperature.
With 2Amp(12Vdc), 6Amp(12Vdc), 1Amp(24Vdc), and 4Amp(24Vdc) models, cooling fans are
controlled by temperature instead of floating voltage.

8. Exquisite case design

The aluminum housing makes the charger to have best thermally conductive performance with
modern case design.

9. Adapted to each battery technology

Chargeable for Lead-Acid Battery (liquid electrolyte, gel electrolyte, lead calcium, etc…)

DBC for Lithium Battery, please contact sales persons individually.

Protections

1. Short-circuit Protection

The charger output will cut-off automatically when short circuit.

2. Overload protection

The charger output current is limited automatically when overload.

3. Reverse polarity protection

The charger output will cut-off automatically when batteries are in reverse connection. Models of
30Amp(12Vdc), 17Amp(24Vdc), 11Amp(36Vdc), 8Amp(48Vdc) and above are protected by fuse;
all other models are protected by circuit.

4. Over charge protection

Using fixed voltage and limited current to avoid overcharging the batteries

5. Temperature protection

If the temperature of environment or the case of battery charger is too high (around 65 ~75 ), ℃℃
the unit will adjust the current automatically to protect battery charger and batteries.

4

SAFETY INSTRUCTION

Misusing or incorrectly connecting the Battery Charger may damage the equipment or create
hazardous conditions for users. Read the following safety instructions and pay special attention to
all Caution and Warning statements in the guide.

Warnings identify conditions that may result in personal injury or loss of life.
Cautions identify conditions or practices that may damage the unit or other equipment.

Battery Related

1. To reduce the risk of battery explosion, follow these instructions and those marked on the
battery.

2. Never smoke or allow an open spark or flame in the vicinity of the battery or engine.

3. DBC Series was designed for charging Lead-Acid batteries only (liquid electrolyte, gel
electrolyte, lead calcium, etc... ).

4. Never charge a frozen battery. Not to recharging non-rechargeable batteries.

5. Take necessary safety precautions when installing the charger near a battery or in a battery
compartment (Follow safety instructions given by the battery manufacturer).

6. Never place the charger directly above or below the battery being charged; gases or fluids from
the battery will corrode and damage the charger. Locate the charger as far away from the
battery as DC cables permit.

Charger Related

1. Do not operate the charger in a closed-in area or restrict ventilation in any way. Install in a well
ventilated, cool, dry place.

2. Do not expose the Battery Charger to moisture, rain, or snow.

3. The charger must not be operated in a damp or wet environment. When mounting in a boat,
make sure it is not subjected to bilge water splash.

4. Disconnect the AC input power to the charger before connecting / disconnecting the batteries
or other DC loads or when working on the charger.

5. To reduce risk of damage to electric plug and cord, pull by plug rather than cord when
disconnecting the Battery Charger.

6. Do not operate the charger if the power cord is damaged. Do not operate Battery Charger with
damaged cord or plug—have the cord or plug replaced.

7. The battery charger must only be plugged into an earthed socket-outlet.

5

Personal Related

1. Someone should be within range of your voice or close enough to come to your aid when you
work near a battery.

2. Have plenty of fresh water and soap nearby in case battery acid contacts skin, clothing, or
eyes.

3. Wear complete eye protection and clothing protection. Avoid touching eyes while working near
battery.

4. If battery acid contacts skin or clothing, wash immediately with soap and water. If acid enters
eye, immediately flood eye with running cold water for at least 10 minutes and get medical
attention immediately.

5. NEVER smoke or allow a spark or flame in the vicinity of battery or engine.

6. Be extra cautious to reduce risk of dropping a metal tool onto a battery. It might spark or
short-circuit the battery or other electrical part that may cause an explosion.

7. Remove personal metal items such as rings, bracelets, necklaces, and watches when working
with a battery.

DC Connection Precautions

Use red insulated wire(s) for positive connection(s) and black for negative connection(s).

Polarity errors are excluded from warranty.

1. Connect and disconnect the DC cables only after removing the AC cord from the electric outlet.

2. When attaching the clips to the battery posts, twist or rock back and forth several times to make

a connection. This tends to keep the clips from slipping off the terminals and helps to reduce the
risk of sparking. Failure to follow these safety guidelines may cause personal injury and/or
damage to the Battery Charger.

6

LCD (Digital Meter) DISPLAY GUIDE

Item Descriptions

O/P Voltage "V":

Default display

O/P Current, Charging Current "A":

The O/P current will display after pressing "Display Key" for 1 second
while displaying "V".
Press & hold “Display Key” for 3 seconds while displaying “A” to
enable O/P current “zero calibration” (the period approx. 10 seconds)
Press “Display Key” for 2 seconds to disable “zero calibration.”
(For safety concerns, zero calibration is not recommended)

Battery Level "P":

The percentage of battery capacity at the moment will display after
pressing "Display Key" for 1 second while displaying "A".

Total Charging Capacity "AH" (Ampere-Hour):

AH calculation will be initiated when charging current >1A, "H"
twinkles when “AH" is operating.
Press and hold "Display Key" for 3 seconds while displaying "H" to
enable AH to zero. "H" stops twinkling when "AH" function stops
operating.

Timer for AH "t":

Start counting after "AH" function is operating. This is to allow users to
know AH value within certain period of time.

Charging End Time Setting "E":

Initiates when voltage >setting value or charging current <30% of
rating. Press & hold "Display Key" for 3 seconds while displaying "E"
to enable timer setting. (Upper Bar twinkle: increase; Bottom Bar
twinkle: decrease)
Press and hold "Display Key" for 3 seconds to save the new setting
value. The 3

rd

dot signal flashes light means the timer is starting and

while the timer stops, the 3

rd

dot signal solid lights.

7

Timer for E "h":

Start counting after "E" (timer) function is operating. When O/P current
is under setting value, the 3

rd

dot signal flashes. It will display the total
time of charge after battery has been fully charged. According to the
value, the user can set the perfect charging time for his own battery.
Ex. If the total time is 1 hour, user can then set the value at 1.0.E.

Pre-charging "C":

When battery voltage < setting value, the pre-charge timer starts
counting. Press & hold “Display Key” for 3 seconds while displaying
“C” to enable timer setting (Upper Bar twinkle: increase; Bottom Bar
twinkle: decrease. Each increment or decrement represents 0.1 hour).
Press & hold “Display Key” for 3 seconds to save the new setting
value.
The bottom bar of small letter “c” twinkle means the charger is
charging the battery by 25% of rating current.
The upper bar of small letter “c” twinkle means the charger is charging
the battery by 50% of rating current.
When battery voltage > setting value, the charger will switch to
equalizer charge stage, and LCD Display will show O/P voltage.

Other Settings & Displays

O/P Current Adjustment:

Press and hold "Display Key" for 3 seconds while displaying "P" to
enable O/P current adjustment.
Upper Bar twinkle: Press “Display Key” to increase the value;
Bottom Bar twinkle: Press “Display Key” to decrease the value.

This function is for authorized technicians only.

High Voltage (Over Charging):

If the battery voltage is over setting value, the display will show "H.V."
& "xx.xv" alternately; the small letter “v” (high voltage) is to distinguish
from capital “V” (O/P voltage); meanwhile, the charger will stop
charging & LED off. Press “Display Key” to reset.

Stop Charging:

1. Current < 10% of rating, the display will show “End” & ”x.x h.”

alternately.

a. Chargers without float charge stage will stop charging and

have LED off.

b. Chargers with float charge stage available will switch to float

charging and have green LED on.

2. When over timer setting but current >10% of rating, the display will

show “End” & “x.x E.” alternately.

a. Chargers without float charge stage will stop charging and

have LED off.

b. Chargers with float charge stage available will switch to float

charging and have green LED on.

3. Press “Display Key” to reset

Battery Error:

If the battery voltage cannot rise to the setting value while the setting
time of 25% of rating current pre-charging is over , the disp lay will show
“Err_” & “xx.x v” alternately. This value represents the final battery
voltage. The small letter “v” (final battery voltage) to distinguish from
capital “V” (O/P voltage).

8

FONT PANEL & BACK PANEL DISPLAY

Front Panel Display (Model: PM-DBC-4512D)

Items Name Description

Item 1 Charging LED Green (floating charge), Orange (equalizer charge)
Item 2 Power LED Red (power)
Item 3 Battery POS+/ NEG- Dual output

[ For 25Amp(12Vdc), 14Amp(24Vdc), 9Amp(36Vdc), 7Amp(48Vdc) and
above only ]

Item 4 Fan Fan automatically slows down or stops when reaching floating voltage.

[ 2Amp(12Vdc), 6Amp(12Vdc), 1Amp(24Vdc), and 4Amp(24Vdc)
chargers are controlled by temperature ]

Item 5 Pulse Clock Turn left: low frequency (charge 1 sec. with 3 sec. of pause)

Turn right: fast frequency (charge 1 sec. with 1 sec. of pause )
[ For 45Amp(12Vdc), 23Amp(24Vdc), 15Amp(36Vdc), 11Amp(48Vdc)

and above only ]
Item 6 Current Limited LED
Item 7 Current Limited Switch

Adjust largest current to half current to charge your smaller batteries.

[ For 45Amp(12Vdc), 23Amp(24Vdc), 15Amp(36Vdc), 11Amp(48Vdc)

and above only ]
Item 8 Pulse Charge Switch
Item 9 Pulse Charge LED

It’s difficult to have batteries fully charged, even with float charging. In

this case, turn on Pulse Charge function will help to fully charge the

batteries and increase charging efficiency.
Item10 LCD Display [ All models except 2Amp(12Vdc), 6Amp(12Vdc), 1Amp(24Vdc), a nd

4Amp(24Vdc) ]

9

Back Panel Connecting (Model: PM-DBC-4512D)

Items Name

Item 11 Connecting with AC input
Item 12 ON/OFF Switch

10

Front Panel - All Models

PM-DBC-0212F, PM-DBC-0612F
PM-DBC-0124F, PM-DBC-0424F

PM-DBC-1012DF, PM-DBC-0724DF
PM-DBC-0436DF, PM-DBC-0348DF

PM-DBC-2012D, PM-DBC-1224D
PM-DBC-0836D, PM-DBC-0648D

PM-DBC-2512D, PM-DBC-1424D
PM-DBC-0936D, PM-DBC-0748D

PM-DBC-3012D, PM-DBC-1724D
PM-DBC-1136D, PM-DBC-0848D

PM-DBC-4512D, PM-DBC-2324D
PM-DBC-1536D, PM-DBC-1148D

　PM-DBC-9012D, PM-DBC-4524D, PM-DBC-3036D, PM-DBC-2248D

11

Back Panel - All Models

PM-DBC-0212F, PM-DBC-0612F
PM-DBC-0124F, PM-DBC-0424F

PM-DBC-1012DF, PM-DBC-0724DF
PM-DBC-0436DF, PM-DBC-0348DF

PM-DBC-2012D, PM-DBC-1224D
PM-DBC-0836D, PM-DBC-0648D

PM-DBC-2512D, PM-DBC-1424D
PM-DBC-0936D, PM-DBC-0748D

PM-DBC-3012D, PM-DBC-1724D
PM-DBC-1136D, PM-DBC-0848D

PM-DBC-4512D, PM-DBC-2324D
PM-DBC-1536D, PM-DBC-1148D

　PM-DBC-9012D, PM-DBC-4524D, PM-DBC-3036D, PM-DBC-2248D

12

Dimensions – All Models

z PM-DBC-0212F, PM-DBC-0612F, PM-DBC-0124F, PM-DBC-0424F

z PM-DBC-1012DF, PM-DBC-0724DF, PM-DBC-0436DF, PM-DBC-0348DF

13

z PM-DBC-2012D, PM-DBC-1224D, PM-DBC-0836D, PM-DBC-0648D

z PM-DBC-2512D, PM-DBC-1424D, PM-DBC-0936D, PM-DBC-0748D

14

z PM-DBC-3012D, PM-DBC-1724D, PM-DBC-1136D, PM-DBC-0848D

z PM-DBC-4512D, PM-DBC-2324D, PM-DBC-1536D, PM-DBC-1148D

15

z PM-DBC-9012D, PM-DBC-4524D, PM-DBC-3036D, PM-DBC-2248D

16

CHARGING CURVE LED INDICATION

Multi-stage charging ensures batteries receive optimum charging with minimal wear and tear, at the
same time regulates the voltage and current delivered to the batteries in three stages automatically.

Automatic multi-rate charging function “Pre-charge, equalizer charge and floating charge”.

z 3 LED Display: Red (power), Green (floating charge), Orange (equalizer charge)

Pre-charge Diagram

DBC battery chargers with pre-charge functions include:
12Vdc: 10A~30Amp 24Vdc: 7A~17Amp 36Vdc: 4A~11Amp 48Vdc: 3A~8Amp

17

Pulse Charge Diagram (At beginning)

Pulse charge at beginning is used to reviving battery when there are many formations of crystals
inside the battery and making the batteries unable to be fully recharged. The constant currents
charging will knock the crystals into smaller pieces and bring the battery back to life.
For the following models, this function can be added upon request:
12Vdc: 10A~30Amp 24Vdc: 7A~17Amp

Pulse Charge Diagram (At end)

Pulse Charge at end is to fully charge the battery when it is unable to achieve by float charge.
Through this step, the charging efficiency will increase and temperature rises slower during
charging process.
This function is available with models 45Amp(12Vdc), 23Amp(24Vdc), 15Amp(36Vdc),
11Amp(48Vdc) and above only.

18

BATTERY CHARGING INSTRUCTION

A spark near the battery may cause an explosion. Follow instructions carefully to reduce the risk of
spark near the battery.

1. Connect the charger system to a wall receptacle strongly.

2. Connect the alligator clips to battery terminals (red clip--->positive terminal; black
clip--->negative terminal) For dual output connection, Battery NEG- port is shared for two sets
of battery cables

3. Position the AC and DC cords to reduce the risk of damage by a hood, door, or moving engine
part.

4. Turn on the power switch which is located on the front panel/back panel of charger, then the
red LED lits and bi-color LED will confirm the charger's stage.

5. Do not face the battery when making the connection.

6. Once the battery is fully charged, disconnect the AC cord, remove the clip from the electrical
items and then remove the clip from the battery terminal.

7. The battery maybe damaged if charging status LED cannot change to green after long time
charge.

8. The battery charger was designed by aluminum housing with good thermal dissipation.
However, avoid touching the case for safety purpose because the temperature may reach to
about 50 degree C on the case when charging.

9. After using battery for certain period of time, the increase of battery impedance will make the
charger unable to identify whether the battery is fully charged. In this case, the charger will
continue charging the battery with equalizer charge, which may cause over charge and reduce
the lifespan of battery. To prevent this from happening, whenever charging new batteries, it is
recommended to record the perfect charging time from “Charging End Time Setting.”

CAUTION: Keep the charger in a well ventilated, cool and open area. Do not block the vent
holes on the sides or the discharge openings of the cooling fan.

19

SPECIFICATION

Model

PM-DBC

-0212F

PM-DBC

-0612F

PM-DBC

-1012DF

PM-DBC

-2012D

PM-DBC

-2512D

PM-DBC

-3012D

PM-DBC

-4512D

PM-DBC

-9012D

Voltage

12V

Current

2A 6A 10A 20A 25A 30A 45A 90A

Equalizer

Charge

14.4V +/- 0.1V

14.4V +/-

0.2V

14.4V +/- 0.1V

Float Charge

13.6V +/- 0.1V

13.6V +/-

0.2V

13.6V +/- 0.1V

OUTPUT

Efficiency

> 87% (at full load)

Voltage

110V or 220V (110V & 220V: 0212F, 0612F, 1012DF)

INPUT

Frequency

47~63HZ

Battery

Reverse

Yes

Short Circuit

Yes

Overload

Yes

Temperature

Yes, when degree around 65°C~75°C, it will stop charging

(except for 0212F, 0612F)

PROTECTION

Cooling fan

Fans are controlled by floating voltage.

(Fans are controlled by temperature (45 °C) for 0212F, 0612F)

LED

3 LED Display: Red (power), green (floating charge), orange (equalizer charge)

LCD

YES (except for 0212F, 0612F)

INDICATORS

Current

Meter

YES (except for 0212F, 0612F)

Dimensions

(mm)

51*81*

152

51*81*

152

54*114*

172

65*131*

192

79*170*

196

79*170*

251

110*229

*335

85*356*

479

MECHANICAL

Weight

(KGS)

0.8 0.8 1.0 1.5 2.0 2.5 4.1 8.5

O/P Wires or Terminal

2A~25A: Microphone Connector or Alligator Clips ; Other models: Terminal

20

SPECIFICATION

Model

PM-DBC

-0124F

PM-DBC

-0424F

PM-DBC

-0724DF

PM-DBC

-1224D

PM-DBC

-1424D

PM-DBC

-1724D

PM-DBC

-2324D

PM-DBC

-4524D

Voltage

24V

Current

1A 4A 7A 12A 14A 17A 23A 45A

Equalizer

Charge

28.8 +/- 0.2V

28.8 +/-

0.1V

Float Charge

27.2 +/- 0.2V

27.2 +/-

0.1V

OUTPUT

Efficiency

> 87% (at full load)

Voltage

110V or 220V (110V & 220V: 0124F, 0424F, 0724DF)

INPUT

Frequency

47~63HZ

Battery

Reverse

Yes

Short Circuit

Yes

Overload

Yes

Temperature

Yes, when degree around 65°C~75°C, it will stop charging

(except for 0124F, 0424F)

PROTECTION

Cooling fan

Fans are controlled by floating voltage.

(Fans are controlled by temperature (45 °C) for 0124F, 0424F)

LED

3 LED Display: Red (power), green (floating charge), orange (equalizer charge)

LCD

YES (except for 0124F, 0424F)

INDICATORS

Current Meter

YES (except for 0124F, 0424F)

Dimensions

(mm)

51*81*

152

51*81*

152

54*114*

172

79*170*

196

79*170*

196

79*170*

251

N/A N/A

MECHANICAL

Weight (KGS) 0.8 0.8 1.0 2.0 2.0 2.5 N/A N/A

O/P Wires or Terminal

1A~12A: Microphone Connector or Alligator Clips ; Other models: Terminal

21

SPECIFICATION

Model

PM-DBC­0436DF

PM-DBC­0836D

PM-DBC­0936D

PM-DBC­1136D

PM-DBC­1536D

PM-DBC­3036D

Voltage

36V

Current

4A 8A 9A 11A 15A 30A

Equalizer Charge

43.2V +/- 0.1V

43.2V +/-

0.2V

43.2V +/- 0.1V

Float Charge

40.8V +/- 0.1V

40.8V +/-

0.2V

40.8V +/- 0.1V

OUTPUT

Efficiency

> 87% (at full load)

Voltage

110V & 220V 110V or 220V

INPUT

Frequency

47~63HZ

Battery Reverse

Yes

Short Circuit

Yes

Overload

Yes

Temperature

Yes

PROTECTION

Cooling fan Fans are controlled by floating voltage.

LED

3 LED Display: Red (power), green (floating charge), orange (equalizer charge)

LCD

YES

INDICATORS

Current Meter

YES

Dimensions (mm)

54*114*

172

65*131*

192

79*170*

196

79*170*

251

48.5*51*

22

85*356*

479

MECHANICAL

Weight (KGS) 1.0 1.5 2.0 2.5 9.6 8.5

O/P Wires or Terminal

4A~9A: Microphone Connector or Alligator Clips ; Other models: Terminal

22

SPECIFICATION

Model

PM-DBC­0348DF

PM-DBC­0648F

PM-DBC­0748DF

PM-DBC­0848D

PM-DBC­1148D

PM-DBC­2248D

Voltage

48V

Current

3A 6A 7A 8A 11A 22A

Equalizer

Charge

57.6 +/- 0.1V

57.6 +/-

0.2V

57.6 +/- 0.1V

Float Charge

54.4 +/- 0.1V

54.4 +/-

0.2V

54.4 +/- 0.1V

OUTPUT

Efficiency

> 87% (at full load)

Voltage

110V &

220V

110V or 220V

INPUT

Frequency

47~63HZ

Battery Reverse

Yes

Short Circuit

Yes

Overload

Yes

Temperature

Yes

PROTECTION

Cooling fan Fans are controlled by floating voltage.

LED

3 LED Display: Red (power), green (floating charge), orange (equalizer charge)

LCD

YES

INDICATORS

Current Meter

YES

Dimensions

(mm)

54*114*

172

65*131*

192

79*170*

196

79*170*

251

48.5*51*

22

85*356*

479

MECHANICAL

Weight (KGS) 1.0 1.5 2.0 2.5 9.6 8.5

O/P Wires or Terminal

3A~7A: Microphone Connector or Alligator Clips ; Other models: Terminal

------------------------------------------------------------

Power Master Technology Co., Ltd.

8F, No.651-3, Chung Cheng Rd.,

Hsinchuang Dist., New Taipei City 24257,

Taiwan (R.O.C.)

Tel: [phone] Fax: [phone]

Email: [email protected]

Website: www.powermaster.com.tw