12v 20ah lifepo4 battery pack
Features of LiFePO4 Battery
Longer Cycle Life: Offers up to 20 times longer cycle life and five times longer float/calendar life than lead acid battery, helping to minimize replacement cost and reduce total cost of ownership.
Lighter Weight: About 40% of the weight of a comparable lead acid battery. A 'drop in' replacement for lead acid batteries.
Higher Power: Delivers twice power of lead acid battery, even high discharge rate, while maintaining high energy capacity.
Wider Temperature Range: -20 C~60 C.
Superior Safety: Lithium Iron Phosphate chemistry eliminates
the risk of explosion or combustion due to high impact, overcharging or short circuit situation.
Increased Flexibility: Modular design enables deployment of up to four batteries in series and max ten batteries in parallel.
Application
Electric vehicles, electric mobility
Solar/wind energy storage system
UPS, backup power
Telecommunication
Medical equipment Lighting
Specification of battery pack
|
Electrical Characteristics |
Nominal Voltage |
12.8V |
|
Nominal Capacity |
Minimum:20Ah |
|
|
Energy |
256Wh |
|
|
Internal Resistance |
≤30mΩ |
|
|
Cycle Life |
>2000 cycles @1C 100%DOD; >3000 cycles @1C80%DOD; |
|
|
Months Self Discharge |
<3% |
|
|
Efficiency of Charge |
100% @0.5C |
|
|
Efficiency of Discharge |
96~99% @1C |
|
|
Standard Charge |
Charge Voltage |
14.4±0.2V |
|
Charge Mode |
CC/CV |
|
|
Recomm. Charge Current |
10A |
|
|
Max. Charge Current |
20A |
|
|
Charge Cut-off Voltage |
14.6V |
|
|
Standard Discharge |
Continuous Current |
20A |
|
Max. Pulse Current |
70A |
|
|
Discharge Cut-off Voltage |
10V |
|
|
Environmental |
Charge Temperature |
0 ℃ to 45 ℃ (32F to 113F) @60±25% Relative Humidity |
|
Discharge Temperature |
-20 ℃ to 60 ℃ (-4F to 140F) @60±25% Relative Humidity |
|
|
Storage Temperature |
0 ℃ to 40 ℃ (32F to 104F) @60±25% Relative Humidity |
|
|
Plastic Case |
ABS+PC UL V-0 flame resistant |
|
|
Dimensions (in./mm.) |
L181*W77*H170mm |
|
|
Weight (lbs./kg.) |
2.5kg |
|
|
Terminal |
M4 |
|
|
Protocol (optional) |
Specification of BMS board
|
Voltage |
Charging voltage |
DC:14.4V 3.6V/Cell (CC/CV) |
|
Balance voltage for single cell |
3.60±0.05V |
|
|
Current |
Balance current for single cell |
68±10mA |
|
Current consumption |
≤600μA |
|
|
Maximal continuous charging current |
20A |
|
|
Maximal continuous Discharging current |
20A |
|
|
Over charge Protection |
Over charge detection voltage |
3.9±0.05V |
|
Over charge detection delay time |
0.5S—2S |
|
|
Over charge release voltage |
3.6±0.1V |
|
|
Over discharge protection |
Over discharge detection voltage |
2.0±0.1V |
|
Over discharge detection delay time |
10mS—400mS |
|
|
Over discharge release voltage |
2.7±0.1V |
|
|
Over current protection |
Over current detection current |
70±10A |
|
Detection delay time |
5ms—60ms |
|
|
Release condition |
Cut load,charge release |
|
|
Short protection |
Detection condition |
Exterior short circuit |
|
Detection delay time |
200-800us |
|
|
Release condition |
Cut load,charge release |
|
|
Resistance |
Protection circuitry |
≤50mΩ |
|
Temperature |
Operating Temperature Range |
-40～+85℃ |
|
Storage Temperature Range |
-40～+125℃ |
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