24V 10Ah electric bicycle Lithium-ion Battery Pack

Nominal Capacity 10Ah Nominal Voltage 24V Nominal Current 10A Voltage Range18.4~ 31.2V

This product specification has been prepared to specify the Lithium-ion Battery Pack(GQ-LMC1-20)made by Guo-Qiang company.

Specifications

Item	Specification
Nominal Capacity	10Ah
Nominal Voltage	24V
Nominal Current	10A
Voltage Range	18.4~ 31.2V
Charging Method	CC-CV (Constant voltage with limited current)
Charging Voltage	29.2 ± 0.1V
Max. Charge Current	5A(ambient temperature 25°C)
Max. Discharge Current	20A(ambient temperature 25°C)
Pack Dimension:	180mm*175mm*76mm
Operating Temperature	Charge 0 to 45°C Discharge  -20 to 55°C
Storage Temperature	-20~45°C

Description of Cells

Cell Type: Rechargeable Lithium-ion Battery

Cell Anode material  LiFePO4

 PCM Specifications

Content	Minimum	Typical	Maximum	Unit
Over-charge protection for each cell	3.875	3.900	3.925	V
Over-discharge protection for each cell	2.220	2.300	2.380	V

Outline Dimensions

 

 Status of the ex-factory battery pack

The pack should be shipped in 50% charged state.

Handling Guideline

Charging

Charging current

Charging current should be less than the maximum charge current specified in the product specification. Charging with higher current instead of the recommended value may cause damage to battery electrical, mechanical and safety performance and could lead to heat generation or leakage.

Charging voltage

Charging shall be done by voltage less than the value specified in the product specification. Charging over the absolute maximum voltage is strictly prohibited. The charger shall be designed to comply with this condition. It is very dangerous that charging with higher voltage than maximum voltage which may cause damage to the battery electrical, mechanical safety performance and could lead to heat generation or leakage.

Charging temperature

The battery pack shall be charged within 0°C~45°C.

Prohibition of reverse charging

Reverse charging is prohibited. The battery shall be connected correctly. The polarity has to be confirmed before charging. In case of the battery is connected improperly, the battery cannot be charged. Simultaneously, the reverse charging may cause damage to the battery which may lead to degradation of battery performance and damage the battery safety, and could cause heat generation or leakage.

Discharging

Discharging current

The Battery shall be discharged at less than the maximum discharge current specified in the product specification. High discharging current may reduce the discharging capacity significantly or cause over-heat.

Discharging temperature

The battery shall be discharged within -20°C~55°C range specified in the product specification.

Over-discharging

It should be noted that the battery might be at an over-discharged state because of its self-discharge property when the battery is not long use. In order to prevent over-discharging, the battery shall be charged periodically to maintain its voltage between 9.2V and 15.6V. Over-discharging may causes loss of Battery performance, characteristics, or battery functions. When a battery is over-discharged, the battery pack shall start with a small current (0.01C) for 15 - 30 minutes, i.e. pre-charging, before rapid chargin

g starts.

Storage

The Battery shall be storied within -20°C~ 45°C range environmental condition. If the Battery has to be storied for a long time (Over 3 months), the environmental condition should be

Temperature  23±5°C

Humidity  65±20%RH

Voltage 9.2V ~ 15.6V

Others

Prevention of short circuit

Enough insulation layers between wires shall be used to maintain absolute safety protection. The battery pack shall be structured with no short circuit, which may cause generation of smoke or firing.

Prohibition of disassembly

    Never disassemble the Battery. The disassembling may generate internal short circuit in the battery, which may cause burst, fire, or other problems.

Prohibition of dispose of Battery into fire

Never burn nor dispose of the Battery in fire. These may cause battery fire, which is very dangerous and is strongly prohibited.

Prohibition of Battery immersion into liquid

The battery shall never be soaked with liquids such as water, seawater, drinks such as soft drinks, juices, coffee or others.

24V 10Ah electric bicycle Lithium-ion Battery Pack