Product

3.2V 20AH LiFePO4 Polymer Battery Cell

Model:GPLFP70173248

Product Description
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3.2V 20AH LiFePO4 Polymer Battery Cell

Dimension

Model	Thickness	Width	Length	Tab width
GPLFP70173248	7.2	174	248	50
GPLFP11198141	11.5	198.5	141.5	50

Specification

NO.	Item	Specification
1	Nominal capacity	20 Ah@ 0.3C5A（6000mA）
2	Nominal voltage	3.2 V
3	Impedance	<5 mΩ
4	Charge cut-off voltage	3.65 V
5	Charge current	Standard charge：0.3C5A 1C5A Rapid charge： 1C5A
6	Standard Charging method	0.3C5A constant current（CC）charge to 3.65V，then constant voltage 3.65V（CV）charge till charge current decline to≤0.02C5A
7	Charging time	Standard charge：5.0h（reference） Rapid charge：3.0h（reference）
8	Max. discharge current	1.0 C5A
9	Max instant discharge current	3.0 C5A
10	Discharge cut-off voltage	2.0 V
11	Operating temperature	Charge：0°C ~ 45°C Discharge：-20°C ~ 60°C
12	Storage temperature	-10°C ~ 45°C
13	Storage humidity	＜85﹪
14	Cell Weight	Approx：560 g

MOQ: 100pcs

3.2V 20AH LiFePO4 Polymer Battery Cell

Electrical characteristics

No.	Item	Requirements	Test Method
1	Discharge rate performance	Discharge Capacity/Nominal capacity×100％ 0.3C5≥100％ 1.5C5A ≥90％	a).Standard charge at 0.3C5A under the condition of normal atmospheric pressure and the environmental temperature of 20℃±5℃ and 45％～80％ RH,discharge at 1I3/4.5I3(A) to 2.0V or the cut-off voltage which is specified in the technical document of the company. b）the capacity(AH)=the discharge time*discharge current, and then is described the percentage of the nominal capacity (Charge/discharge cycle can be conducted for 3 times before meeting the Standards（the same below）.
2	High-low Temperature Discharge performance	Discharge Capacity/Nominal capacity×100％ A) 55℃≥95%； B) -20 ℃≥55％；	A. After Standard charging. Then store it at the constant temperature of 55±2℃ for 5h（of -20±2℃ for 20h）, and discharge at 0.3C5A to 2.0V or the cut-off voltage which is specified in the technical document of the company, the capacity(AH)=the discharge time*discharge current, and then is described the percentage of the nominal capacity.
3	Normal Storage/ High Temperature Storage	Residual Capacity ≥Nominal capacity80％ Recoverable capacity≥Nominal capacity 90％	Store for 28 days（Store for 7 days at the constant temperature of 55±2℃） after standard charge, then measure final status and residual capacity at 0.3 C5A to 2.0V or the cut-off voltage which is specified in the technical document of the company; After charge/discharge(0.3C5A /0.3C5A) cycle can be conducted for 3 times , recoverable capacity will be tested
4	storage performance	recoverable capacity ≥ nominal capacity *95％	Standard charge and then rest for 1H,then discharge for 2H at 0.3C5A, storge for 90 days at 20℃±5℃,After standard charge, then discharge at 0.3C5A, (Charge/discharge cycle can be conducted for 5 times before meeting the Standards（the same below）
5	Cycle Life	Discharge Capacity ≥Nominal capacity*80％	conduct 0.3C5A/0.3C5A cycle for 2000 times .The discharge capacity shall be measured after 2000 cycles.

Safety Performance

No.	Item	Requirements	Test Method
1	Over charge	No fire,no explosion	After standard charging， then Charge at 3 C5A to 10.0V
2	Over discharge	No fire,no explosion	After standard charging，Discharge 0.3C5A to 0V at 20℃±5℃
3	Short Circuit at Room Temperature	No fire,no explosion	After standard charging, Keep the battery into a ventilation cabinet and short-circuit the positive and negative terminals directly (general resistance shall be less than or equal to 5m ) for 10 minutes
4	Drop	No fire, no explosion., No leakage	After standard charging, then let it self fall off from a height of 1.5m (the lowest height) to a rigid wooden board with the thickness of 20mm. The drop is implemented one time for every face.
5	Hot Oven	No fire, no explosion	After standard charging. Keep the battery in the box with constant temperature of 85 ℃ ± 2 ℃ and remained for 2 hours at this temperature.
6	Crush	No fire, no explosion	After standard charging, keep the battery on the bracket, 1. Extrusion direction: Perpendicular to the direction of maintaining pressure on the battery plates. 2.Extrusion headdress product: ≥ 20cm 3.Extrusion degree: Until the battery shell ruptured or internal short circuit (battery voltage becomes 0V)
7	Needle puncture performance	No fire, no explosion	After standard charging, keep the battery on the bracket, penetrate through it with a 3mm ～ 8mm diameter nail near the center of its biggest surface at the rate of 10mm/s-40mm/s.