MLG12-55 (12V55AH)

www.sunstonepower.comSunstone Power Industry Co.,ltd

Electronic apparatus and equipment

Communication power supply

DC power supply

Telecommunication system

Alarm and security system

Backup power for testing and

measuring instruments

UPS

Emergency lighting

Fire alarm and security systems

Auto control system

Solar and wind system

Maintenance-free operation Stable quality and high reliability

Compact design 12years design time (at 25℃)

Gelled Electrolyte Technology

Features

Application

Specifications

Dimensions unitimm[inches]

Nominal

Voltage

12V

(6

cells)

Operating

Temp.Range

Discharge:

-15－50℃

(5－122℉)

Nominal

Capacity

58.5AH

(20hr,

1.80V/cell,

25℃/76℉)

Charge

:

0－40℃

(32－104℉)

55AH

(10hr,

1.80V/cell,

25℃/77℉)

Storage

:

-15－40℃

(5－104℉)

47AH

(5hr,

1.75V/cell,

25℃/77℉) Nominal

Operating

Temp.Range

25

±

3℃

(

77

±

5℉)

33AH

(1hr,

1.60V/cell,

25℃/77℉)

Cycle

Use 14.4~14.8V

(25℃/77℉)

Temp.Coefficient

-30mV/℃

Dimension

Length

228

±

2mm

Initial

Charging

Current

Less

than

16.5A

Width 137 ± 2mmStandby Use 13.5~13.8V (25℃/77℉) Temp.Coefficient -20mV/℃

Container Height 210 ± 2mm No limit on Initial Charging Current

Total Height(with Terminal) 214 ± 2mmCapacity affected by

Temperature

40℃ (104℉) 103%

Approx Weight Approx 17Kg 25℃ (77℉) 100%

Terminal T3 or F5 0℃ (32℉) 86%

Container Material ABS

Self Discharge

Sunstone MLG series batteries may be stored for up to 9 months

Max. Discharge Current 600A (5S) at 25℃ (77℉) and then a freshening charge is required.

Internal Resistance Approx 8.5mΩ For higher temperatures the time interval will be shorter.

Constant Current Discharge (Amperes at 25℃/77℉)

F.V/Time 5min 10min 15min 30min 45min 1h 2h 3h 5h 10h 20h

1.80V/cell 132.3 95.7 78.1 48.7 37.6 30.8 18.1 13.6 9.4 5.51 2.90

1.75V/cell 144.5 105.2 84.7 50.7 39.1 31.8 18.6 13.9 9.6 5.61 2.94

1.70V/cell 156.3 112.3 91.5 52.4 40.3 32.7 19.1 14.2 9.8 5.68 2.97

1.65V/cell 168.5 119.8 96.7 55.3 42.0 34.0 19.7 14.6 10.0 5.74 3.01

1.60V/cell 180.1 128.0 101.1 57.8 43.5 35.1 20.2 14.9 10.2 5.80 3.04

Constant Power Discharge (Watts per cell at 25℃/77℉)

F.V/Time 5min 10min 15min 30min 45min 1h 2h 3h 5h 10h 20h

1.80V/cell 247.5 175.4 148.1 91.5 71.5 60.0 34.9 26.3 18.5 10.94 5.71

1.75V/cell 263.0 188.0 155.6 95.2 74.5 61.3 35.8 26.9 18.8 11.08 5.80

1.70V/cell 278.2 197.9 163.7 98.4 76.9 62.2 36.7 27.4 19.0 11.17 5.85

1.65V/cell 299.9 207.1 169.7 103.8 79.1 64.2 37.4 27.9 19.4 11.24 5.91

1.60V/cell 317.1 215.5 177.0 107.0 81.2 66.2 38.2 28.4 19.7 11.32 5.97

Note: The above characteristics data are average values obtained within three charge/discharge cycles, not the minimum values.

21

0±

2mm

21

4±

2mm

www.sunstonepower.comSunstone Power Industry Co.,ltd

Discharge100%(0.05CAx 20h)50%(0.05CAx 10h)

ChargeCharge Voltage 2.275V/CCharge Current0.1CA

Temperature 25 CO

2

3

1

Charge Volume

Charge Voltage

Charge Current

ChargeTime(h)

Ch

arg

e V

olt

ag

e( V

)

9

10

11

12

13

14

15 7.5

7.0

6.5

6.0

5.5

5.0

4.5

5.0

4.7

4.3

4.0

3.7

3.3

3.0

120

100

80

60

40

20

0

0.24

0.20

0.16

0.12

0.08

0.04

0

Ch

arg

e V

olta

ge(%

)

Cha

rge V

olta

ge

( CA

)

0 2 4 6 8 10 12 14 16 18 20 24 28

100%

DOC

80%

DOC

30%

DOC

200 400 600 800 1000 12000

120

100

80

60

40

20

0

Testing conditionDischarging: current 0.17C(FV 1.7V/cell);Charging: current 0.25C max, voltage 2.45V/cell;Charging volume:125% of discharged capacity.

Number of Cycles

-20 -10 0 10 20 30 40 50 60

Ca

pa

cit

y (

%)

120

100

80

60

40

20

Temperature( C)O

0.1CA

0.17CA

0.25CA

Te

rmi n

al V

olt

ag

e(V

)

8.0

9.0

10.0

11.0

12.0

13.0

1 2 4 6 8 10 20 40 60 2 3 5 8 10 20

Min HDischargeTime

12VBattery(V) Temperature:25 C(77 F)

O O

110A

55A 33A

22A13.75A

9.35A 5.5A 2.75A

Cap

ac

i ty

(%)

100

80

60

40

20

0

2 4 6 8 10 12 14 16 18 20 22 24

30 CO

40 CO

20 CO

10 CO

0 CO

Supplementary charge required(Carry out supplementary chargebefore use if 100% capacity isrequires).

Supplementary charge requiredbefore use.This supplementary charge will helpto recover the capacity and shouldbe made as early as possible.

Supplementary charge may oftenfail to recover the capacity.The battery should never be leftstanding till this state is reached.

Supplementary charge and storageguidelines

StorageTime(months)

15

12

9

6

3

010 20 30 40 50

BatteryTemperature( C)O

Storage characteristics Effect of temperature on long term float life

Charge characteristic Curve for standby use Cycle Life in Relation to Depth of Discharge

Temperature Effects in Relation to Battery CapacityDischarge characteristic Curve

1400 1600

AmbientTemperature:25 C(77 F)O O

MLG12-55 (12V55AH)