NPP Power Co.,Ltd. NPD12-250Ah 12V250Ah

NPP Power Co.,Ltd.

NPD12-250Ah 12V250Ah

Specifications Nominal Voltage

Rated capacity (20 hour rate) Length

Dimensions

Width Height

Total Height

Approx. Weight

12V 250Ah 520?2mm(20.47inch) 268?2mm(10.55inch) 220?2mm(8.66inch) 243?2mm(9.57inch) 74.5kg(163.9lbs)?3%

Outer dimensions (mm)

Terminal Type (mm)

16

M8?16 T16

5

Characteristics

Capacity (25)

20HR(10.8V) 3HR(10.8V) 1HR(10.5V)

Terminal type

250Ah 189Ah 140Ah

T16

Internal resistance (Fully charged,25)

Approx. 2.6m

Capacity affected by temperature

(20HR)

40 25 0 -15

Self-discharge (25)

3 months 6 months 12 months

Nominal operating temperature

Operating temperature

range

Discharge Charge Storage

102% 100% 85% 65% Remaining Capacity:91% Remaining Capacity:82% Remaining Capacity:65%

2 5 ?3( 7 7 ?5)

-15~50(5~122) -10~50(14~122) -20~50(-4~122)

13.50 to 13.80V Float charging voltage(25) Temperature compensation:

-18mV/

14.50 to 15.00V Cyclic charging voltage(25) Temperature compensation:

-30mV/

Maximum charging current Maximum discharge current Designed floating life(20)

75A 1500A(5 sec.)

10years

Construction

Component Positive plate Raw material Lead dioxide

Negative plate Container Cover Separator

Lead

ABS

ABS

AGM

Constant Current Discharge Characteristics Unit:A(25,77)

Electrolyte Sulfuric acid

Safety valve Rubber

Terminal Copper

F.V/Time 15min 30min 60min

2h

3h

4h

5h

6h

8h

10h

20h

9.60V

428

256

158

93.2

67.1

53.6

45.8

39.8

31.5

26.0

13.8

9.90V

418

251

155

92.6

66.7

53.3

45.5

39.6

31.3

25.9

13.7

10.2V

403

243

151

91.8

66.3

52.9

45.2

39.3

31.1

25.8

13.7

10.5V

389

238

147

90.4

65.8

52.5

44.9

39.0

30.9

25.7

13.6

10.8V

368

229

142

88.1

63.8

51.0

43.5

37.8

29.9

25.5

13.5

Constant Power Discharge Characteristics Unit:W(25,77)

F.V/Time 15min 30min 60min

2h

3h

4h

5h

6h

8h

10h

20h

9.60V

4704

2875

1797

1079

789

630

541

470

374

310

165

9.90V

4591

2818

1770

1073

785

626

538

468

372

309

165

10.2V

4422

2732

1725

1063

779

622

534

464

369

308

164

10.5V

4271

2666

1671

1047

774

618

530

461

367

307

163

10.8V

4045

2568

1617

1021

750

599

515

447

356

304

162

Note: The above characteristics data can be obtained within three charge or discharge cycles.

NPP Power Co.,Ltd. NPD12-250Ah 12V250Ah

Capacity (%)

Voltage (V)

13.0 12.0 11.0 10.0 9.00 8.00

3C 2C

1C 0.6C

0.2C 0.1C 0.05C 0.3C

1 2 3 5 10 20 30 60 2 3 5 10 20 30 min

Discharge time

120 100

0.05C 0.1C

80

0.25C

60 1C

40

20

0 -20 -10 0

10 20 30 40 50

Temperature ()

Floating life on Temperature

15

Life (years)

10 5

2.30V/Cell

0.5

10

20

30

40

50

60

Temperature()

The relationship for OCV and Capacity (25)

Open Circuit Voltage (V)

13.5

13.0 (25 C/77 F)

12.5 12.0

11.5

11.0

0

20

40

60

80

100

Residual Capacity (%)

IS O1 IS O 9

001 :20 08

4000 :20 04

Voltage (V)

Capacity (%)

Charged Volume Current Voltage

(%) 140

(CA) (V)

120 0.25 15.0

100 0.20 14.0

80

0.15 13.0

60

0.10

40

12.0

50% Discharge 100% Discharge

Charged volume

Charge voltage

20

0.05 11.0

Charging current

0

0

0 2 4 6 8 10 12 14 16 18 20 Charging time(hours)

Self-discharge characteristics

100

90

80

70

60

40 C

50

30 C

20 C

40

02

4

6

8 10 12 14 16

Storage time(months)

Cycle life on D.O.D (25)

Capacity (%)

120 100

80 60 40 20

100% D.O.D.

50% D.O.D.

30% D.O.D.

0 200 400 600 800 1000 1200 1400 1600 Number of cycles (cycles)

The relationship for Charging voltage and Temperature

15.6 15.0 14.4 13.8 13.2

Cycle Use Floating Use

-10

0

10

20

30

40

Temperature()

50

60

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