EP28-12 Datasheet, PDF (1/1 Pages) B. B. Battery Co., Ltd. – VRLA Rechargeable Battery

VRLA Rechargeable Battery
EP28-12
Measures
Technology
Values
Innovation
FEATURES
Absorbent Glass Mat technology for efficient gas recombination
Maintenance free(no water topping-up required)
No free acid(Non-spillable battery)
Can be used in any orientation(excluding used inverted)
The battery is designed for heavy duty cyclic application
Low self-discharge rate, lower than 3% capacity loss per month
APPLICATION
UPS
Golf-Carts
Wheelchairs
Lawn Mowers
Electric Vehicles
SPECIFICATIONS
Nominal Voltage
Nominal Capacity
Approx. Weight
Terminals
Internal Resistance
Max. Discharge Current
Max. Charge Current
Operating Temperature Range
Container Material
12 V
28Ah @ 20 hour rate F.V.(1.75V/cell)
9700g(21.39lbs.)
B1 (Fitting M5 bolt & nut) , T2 and I1 are optional
10m (Fully Charged )
420 A (5 sec.)
8.4 A
Charge 0^oC~40^oC(32^oF~104^oF)
Discharge -20^oC~50^oC(-4^oF~122^oF)
Storage. -20^oC~40^oC(-4^oF~104^oF)
Standard: ABS( UL 94-HB) EP28-12
Optional: Flame Retardant ABS(UL 94-V0) EP28-12FR
IEC 61056-1
JIS C 8702-1
GB/T 19639.1
DIMENSION(mm/inch)
OUTER DIMENSIONS
TERMINAL TYPE
Length
175±1.5 (6.89±0.06)
Width
166±1.5 (6.54±0.06)
Terminal B1
12.0(0.47) 2.0(0.08)
Terminal T2
3.4(0.13)
Terminal I1
M5x0.8
Container Height
125±1.5 (4.92±0.06)
Total Height
125±1.5 ^{(4.92±0.06)}
7.95(0.31)
[M5 BOLT & NUT]
[M5 BOLT & NUT]
Terminal Hardware Initial Torque: B1 (2.5Nm±5%),I1(4.0Nm±5%)
Constant power discharge characteristics at 25 ^oC/77 ^oF U^Unⁿiⁱt^t:^: W^W
Discharge
F.V.
Time
(V/cell)
1.80V
5 Min
912.0
10 Min
685.6
15 Min
555.2
30 Min
334.0
1 Hr
193.6
3 Hr
81.6
5 Hr
56.4
10 Hr
31.44
20 Hr
16.44
1.75V
1056.0
742.8
581.2
346.8
199.2
83.2
57.2
31.92
16.80
1.70V
1120.0
769.6
598.8
354.4
202.8
84.0
57.6
32.08
16.88
1.65V
1172.0
788.0
612.8
359.6
205.6
84.8
58.0
32.16
16.92
1.60V
1208.0
803.6
624.8
363.2
207.6
85.2
58.0
Constant current discharge characteristics at 25 ^oC/77 ^oF Unit: A
32.16
16.92
Discharge
F.V.
Time
(V/cell)
1.80V
5 Min
82.2
10 Min
60.4
15 Min
48.3
30 Min
28.3
1 Hr
16.3
3 Hr
6.80
5 Hr
4.70
10 Hr
2.62
20 Hr
1.37
1.75V
96.9
65.4
50.5
29.4
16.7
6.93
4.77
2.66
1.40
1.70V
102.8
67.7
52.1
30.0
17.0
7.00
4.80
2.67
1.41
1.65V
107.5
69.4
53.3
30.5
17.3
7.07
4.83
2.68
1.41
1.60V
110.8
70.7
54.3
30.8
17.4
7.10
4.83
All data and artworks shall be changed without prior notice, BB reserves the right to explain and update the information contained hereinto.
2.68
1.41
A/3 REV. Dec. 2013
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