WP5-12

Specifications
Nominal Voltage(V)
12V

Nominal Capacity
20 hour rate (0.25A to 10.50V) 5Ah
10 hour rate (0.475A to 10.50V) 4.75Ah
5 hour rate (0.85A to 10.20V) 4.25Ah
1 C (5A to 9.60V) 2.833Ah
3 C (15A to 9.60V) 2.0Ah
Weight
Approx. 1.9kg(4.18Lbs.)

Internal Resistance (at 1KHz) Dimensions

Approx. 19 mΩ
Length (L) 90±1 (3.54±0.04)

Maximum Discharge Current for Width (W) 70±1 (2.76±0.04)

5 seconds: 75A Height (H) 101.5±1 (4.00±0.04)

Charging Methods at 25℃(77℉) Overall Height (HT) 107±1 (4.21±0.04)
Cycle use: mm(inch)
Charging Voltage 14.4 to 15.0V
Coefficient -5.0mV/℃/cell

(0.25)
(0.19)
4.75

6.35
Maximum Charging Current： 1.5A
Standby use:
(0.03)

(0.03)
0.8

0.8
Float Charging Voltage 13.5 to 13.8V F1 F2
Coefficient -3.0mV/℃/cell
90±1(3.54±0.04) 70±1(2.76±0.04)
Operating Temperature Range
Charge -15℃(5℉) to 40℃(104℉)
101.5±1(4.00±0.04)
107±1(4.21±0.04)

Discharge -15℃(5℉) to 50℃(122℉)

Storage -15℃(5℉) to 40℃(104℉)

Charge Retention (shelf life) at 20℃(68℉)

1 month 92％
3 month 90％
6 month 80％
(v) O
FOR 12V Discharge Time VS. Discharge Current (25 C)
BATTERY
13.0

Case Material
12.0
ABS UL94 HB
Option: Flammability resistance of (UL94 V-0)
11.0

Design Life 0.475A 0.25A

10.0 0.85A
3-5 Years. 5A
15A
9.0
Terminal
8.0
F1 or F2 (Faston Tab 187 or 250) 1 2 4 6 8 10 20 40 60 2 4 5 6 8 10 20

minutes hours

Discharge Time
 WP5-12
Effect of Temperature on Capacity 25℃(77℉) Capacity Retention Characteristic
(%)
120 100

0.05CA 0℃(32℉)
100 0.1CA

Remaining Capacity
75
Capacity %

0.25CA
80 0.6CA 10℃(50℉)

1CA
60 2CA 50 20℃(68℉)

40℃(104℉) 30℃(86℉)
40

25
20

0
-20 -10 0 10 20 30 40 50 ℃ 0
3 6 9 12 15 18
-4 14 32 50 68 86 104 122 ℉ Storage Time (months)
Temperature

Cycle Service Life Trickle (or float) Service Life

120 10

100
Capacity %

Life (years)
80 3

2
60
Discharge Depth 100% Discharge Depth 30%
Discharge Depth 50%

40
(1) Discharge : 5HR rate (0.17CA)
(2) Charge : CV 2.4V/cell＊ 16H Imax 0.3CA 0.5
20 (3) End of life discharge voltage : 1.65 Vpc
(4) Temperature : 25±2℃

20 30 40 50 (℃)
0 200 400 600 800 1000 1200 1400 1600 68 86 104 122 (℉)
Number of Cycles (times) Ambient Temperature

- PERFORMANCE DATA
Discharge Rates in Watts to Various End Voltages at 25℃(77℉)
End Voltage 1.85V 1.80V 1.75V 1.70V 1.67V 1.65V 1.60V
Time
5 min 36.3 39.5 41.5 43.5 44.3 45.5 47.0
10 min 25.7 27.7 29.2 30.2 30.7 31.3 32.3
15 min 19.7 21.2 21.8 22.5 22.8 23.2 23.7
30 min 11.2 11.7 12.1 12.5 12.7 12.8 12.9
60 min 5.95 6.27 6.47 6.70 6.82 6.93 7.07
120 min 3.13 3.38 3.53 3.65 3.72 3.80 3.92
180 min 2.53 2.72 2.85 2.97 3.02 3.07 3.15
240 min 2.02 2.15 2.27 2.33 2.37 2.40 2.45
300 min 1.73 1.87 1.95 1.98 2.00 2.02 2.05
600 min 1.01 1.09 1.15 1.17 1.18 1.19 1.21
1200 min 0.530 0.572 0.603 0.615 0.620 0.625 0.633

- Discharge Rates in Amperes to Various End Voltages at 25℃(77℉)

End Voltage 1.85V 1.80V 1.75V 1.70V 1.67V 1.65V 1.60V
Time
5 min 17.8 21.7 23.9 25.8 26.4 27.0 27.8
10 min 13.2 14.8 15.7 16.2 16.6 16.9 17.3
15 min 9.92 10.5 10.9 11.1 11.2 11.3 11.5
30 min 5.84 6.15 6.26 6.38 6.42 6.47 6.55
60 min 3.04 3.20 3.38 3.46 3.49 3.53 3.59
120 min 1.58 1.70 1.79 1.87 1.91 1.94 1.99
180 min 1.27 1.35 1.41 1.47 1.49 1.52 1.55
240 min 1.00 1.07 1.11 1.15 1.16 1.18 1.21
300 min 0.851 0.898 0.919 0.942 0.953 0.962 0.978
600 min 0.497 0.506 0.514 0.521 0.524 0.529 0.535
1200 min 0.268 0.274 0.279 0.284 0.286 0.287 0.291

All data on the spec. sheet is an average value:

The tolerance range : X<6min(+15%~-15%), 6min≦X<10min(+12%~-12%),10min ≦X < 60min(+8% ~-8%), X≧60min(+5%~-5%)
260918-1H