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

Maintenance-free operation Stable quality and high reliability

Compact design 10 years design time (at 25℃)

Features

Application

Specications

www.sunstonepower.comSunstone Power Industry Co.,ltd

Dimensions unitimm[inches]

ML12-50(12V50AH)

Discharge: -15 －50℃ (5－122℉)

13.5~13.8V (25℃/77℉) Temp.Coefficient -20mV/℃

Initial Charging Current Less than 16.5A

14.2~14.4V (25℃/77℉) Temp.Coefficient -30mV/℃

25 3± ℃ ( 77± 5℉ )

Storage : -15 －40℃ (5－104℉)

Charge : 0 －40℃ (32－104℉)

Approx Weight

For higher temperatures the time interval will be shorter.

at 25℃ (77℉) and then a freshening charge is required.

SunstoneML series batteries may be stored for up to 6 months

0℃ (32℉) 86%

25℃ (77℉) 100%

Terminal

Container Material

Self Discharge

Nominal Capacity

53.2AH (20hr, 1.80V/cell, 25 ℃/76℉) Operating Temp.Range

Nominal Operating Temp.Range

Cycle Use

Approx 16.2Kg

T3 or F5

Container Height 210 2mm±

Total Height(with Terminal) 216 2mm±

ABS

Capacity affected by

Temperature

40℃ (104℉) 103%

No limit on Initial Charging Current

Nominal Voltage

Length 228 2mm±

Width 137 2mm±

12V (6 cells)

50AH (10hr, 1.80V/cell, 25 ℃/77℉)

42.5AH (5hr, 1.75V/cell, 25℃/77℉)

30AH (1hr, 1.60V/cell, 25 ℃/77℉)

Dimension

550A (5S)Max. Discharge Current

Internal Resistance Approx 8.0mΩ

Standby Use

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

10h 20h30min 45min 1h 2h

1.80V/cell 123.7 89.1 72.6

3h 5hF.V/Time 5min 10min 15min

12.44 8.56 5.02 2.6445.3 34.8 28.36 16.57

5.12 2.6847.2 36.1 29.25 17.04

1.70V/cell 146.1 104.5 85.1

12.75 8.761.75V/cell 135.1 97.8 78.8

13.03 8.91 5.18 2.7148.8 37.3 30.10 17.51

5.23 2.7551.4 38.9 31.29 18.01

1.60V/cell 168.4 1119.1 94.0

13.41 9.091.65V/cell 157.5 111.4 89.9

13.63 9.26 5.29 2.7753.7 40.3 32.34 18.51

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

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

10h 20h30min 45min 1h 2h

1.80V/cell 231.4 163.2 137.8

3h 5hF.V/Time 5min 10min 15min

24.13 16.91 9.98 5.2185.1 66.2 55.22 31.89

10.11 5.2988.5 68.9 56.47 32.75

1.70V/cell 260.1 184.1 152.2

24.64 17.171.75V/cell 245.9 174.9 144.7

25.12 17.36 10.18 5.3491.5 71.1 57.26 33.53

5.3996.5 73.2 59.14 34.241.65V/cell 280.4 192.6 157.9

296.4 200.5 164.7

25.59 17.73 10.25

26.07 17.98 10.33 5.4499.5 75.1 60.99 34.921.60V/cell

ML12-50(12V50AH)

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

r ge V

olta

ge

( CA

)

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

100%

DOD

50%

DOD

30%

DOD

AmbientTemperature:25 C(77 F)O O

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

city

(%

)

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

100A

50A 30A

20A12.5A

8.5A 5.0A 2.5A

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 oat life

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

Temperature Effects in Relation to Battery CapacityDischarge characteristics Curve

Lif

e E

xp

ec

tan

cy

(ye

ars

)