48 Volt 8AH Lithium ion Battery Water Bottle battery for electric bike

group name48V Electric Bicycle Battery Pack
Min Order1 piece
brand nameBafang, Shimano, Headway, AKM, Freego
modelLI4808B119
payment methodT/T, PayPal, Westem Union, Cash, Escrow
update timeFri, 17 Aug 2012 00:39:09 GMT

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Paramtents

color Silver
Rear Rack: Suitable for 20~28"
Electric Lock And Key yes

Packging & Delivery

Min Order1 piece

Briefing

48V 8AH Lithium Ion;
Φ91*405mm;
4.2kgs;
with compliant rear rack 20~28";
handle bar for easy carrying;

Detailed

Type		48V 8AH Water Bottle Battery Pack
1. Basic Characteristics
Weight		≤4.2kg
Dimension(D*H)		Φ91*405mm
Working temperature	Charge Temperature	0~45°C
	Discharge Temperature	-20~65°C
Retention of charge (store in one month)		≥95%
2. Technical Data
Rated Voltage		48V
Rated Capacity C₁		≥ 8Ah
Battery Resistance		≤4 mΩ
Charge	Way of Charge	CC/CV(Constant Current;Constant Voltage)
	Standard Charge Current	2A
	Max Charge Current	10A
	Max Charge Voltage	54.6V
	Cell OverCharge Protection Voltage	54.6V
Discharge	Standard Discharge Current	10A can be customized
	Max Discharge Current	20A can be customized
	Discharge Cut-off Voltage	31.6V
	Cell Overdischarge Protection Voltage	31.6V
Ratio Discharge	1C	>96%C₁
	2C	>93%C₁
	3C	>90%C₁
Cycle Life		≥ 800 Cycles
3. Safety Test
Short Circuit Safety Test		No fire, No explosion
Overcharge Safety Test
Crush Safety Test
Needling Safety Test
Extrusion Safety Test
130°C High Temperature Safety Test

QC Standard for Cells:

1. In good light,the surface should be smooth and dry,without crack,score,dirt etc.,the identification 2. should be clear and correct.

3. There should be clear polar identifications,the identification should be correct check by voltage meter.

4. Over discharge--no fire,no explosion,no leakage

5. Over charge--no fire,no explosion

6. Short circuit--no fire,no explosion

7. Drop--no fire,no explosion,no leakage

8. Heat--no fire,no explosion

9.Crush--no fire,no explosion

10. Stab--no fire,no explosion

QC Standard for Battery Pack:

1. Check all connection included cell to cell, data wires between cells and BMS, BMS to the cell, BMS 2. to the discharging port and charging port

3. 100% capacity at 0.2C discharging and in normal temperature 20°c

4. >98% capacitive at 1.5C discharging and in normal temperature 20°c

5. >95% capacity at normal discharging in very high temperature 55°c

6. >50% capacity at normal discharging in very low temperature -20°c

7. Over-discharging testing

8. Over-charging testing

storage:

1. Use at temperature below 40°C,charge fully prior to long storage periods or if it has been stored for more than three months

2. If you find any single battery voltage is under 2V at room temperature,the battery has been over-discharged or is self-discharging due to some defect/parasitic load. Discontinue use until the fault can be corrected and the battery be recharged

3. Store in an open,well ventilated,dry,clean area, between -20°C to 40°C for maximum life. self-discharge will accelerated at higher temperature

4. Don’t expose the battery to extremes of temperature over 60°C,directly to sources of heat, direct sunlight or moisture and/or rain