High energy density
High working voltage for single battery cells
Pollution-free
Long cycle life
No memory effect
Capacity, resistance, Voltage, platform time consistency is good
With short-circuit production function, safe and reliable
Factory price & High quality
Good consistency, low self discharge
Light weight, small size
High discharge rate
Quality and security guaranted,with CE,ROHS approval.
The lifepo4 battery pack is widely used for electric bicycle,golf car,electric bike,electric wheelchair,power tools,electric scooter,emergency light,etc

2. Deep cycle lithium ion battery 72V 40Ah Specification

NO.	Items		Characteristics	Testing Methods
1	Nominal Voltage		76.8V	Follow GB/T18287-2013>
2	Nominal Capacity		40Ah	Follow
3	Minimum Capacity		38Ah	Follow
4	Battery internal Impedance		Internal Impedance≤150mR	Internal Impedance Testing Machine(1kHz )
5	Shipment Voltage		76.8～81.6V	Multi-meter
6	Dimension	Length	530x240x222mm	Vernier caliper
		Width
		Height
		Gross weight	Approx. 27kg	electronic scale
7	Working Temperature	Charge	0~45℃,45~85%RH	Temperature & Humidity Instruments
		Discharge	-20~55℃,45~85%RH
8	Storage Temperature & Humidity Range	Short: above one month	-20~+55℃,45~85%RH	Temperature & Humidity Instruments
		Medium: above three months	0~+45℃,45~85%RH
		Long:above one year	+5~+30℃,45~85%RH
9	Allowed maximum continuous charge current		40A	Multi-meter
10	Allowed maximum continuous discharge current		50A	170A(8S)
11	Allowed maximum reverse charge voltage		NO Allowed	/
12	Allowed maximum charge voltage		87.6±0.2V	Multi-meter
13	Discharge cut-off voltage		≤65V	Multi-meter

3. Deep cycle lithium ion battery 72V 40Ah Safety Test

No.	Items	Standards	Testing Methods
1	Short-Circuit	NONE	Prohibit output electrode short circuit
2	Over Discharge Protection Test	The battery should be no remarkable breakage, distortion. Appearance and charge are normal.	Discharge the battery at the rate of 0.2C with the load of 30Ω for 24h . Charging for 10sec with specified adapter , and check the voltage(≥37V)
3	Impact Test	The battery should be no explosion or catch fire	Place a full charged battery on a flat and put a stainless steel stick (Diamond 7.9mm) in the middle of the battery upright . Beat the steel stick with 9.1Kg

4. Deep cycle lithium ion battery 72V 40Ah Dimension

5. Application