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Power battery cell 14.8V 2600mAh rechargeable li-ion battery pack for bike front light

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Solar lithium battery 18650 3.7v 3300mAh 1s3p 9900mAh li-ion battery pack

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Lithium cell ICR21700 3.7v 4500mAh 5000mAh rechargeable li-ion battery for flashlight

Voltage:3.7v

Capacity:4500mAh/5000mAh

Cell type:ICR21700 3.7V 5000mAh

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Specfication:

Model 21700
Nominal voltage 3.7V
Nominal capacity 5000mAh
Size customized
Max charge current 0.5C
Charging method Constant current 1C to 4.2V,then charge with constant voltage 4.2V till charge current less than 0.01C
Max discharge current 1C
Discharge cut-off voltage 2.5V, the over-discharge detection voltage of PCM
Operating environment Charging, 0°C ~ 45°C ; 65±20%RH; Discharging, -20°C~60°C ; 65±20%RH
Storage environment -20°C~45°; 65±20%RH; 
Lifespan (80% Prime Capacity) >500times  
Charging Attention It is dangerous that charging with higher current or voltage than Product Specification may cause damage to the cell electrical, mechanical safety performance.

Product Advantages:
1) Green product
2) Long standby time
3) One year warranty
4) Excellent safety performance
5) Excellent storage performance and low self-discharge rate
6) Short circuit testing passed
7) Overcharge testing passed
8) Over discharge testing passed
9) 150C thermal shock test passed
10) 1.2m drop testing passed 

Product application

Light: headlamp, emergency light, sloar flashlight, searchlight, lanten,bicycle light, LED light, high-end flashlight, high power flashlight, bright flashlight.
2.Outdoor sports products: camping light, mountain bike light, solor emergency light, self-defense flashlight,
3.Customer electronics: MPS, Tablet PC. laptop, Bluetooth earphone, power bank, portable DVD player,
speaker, microphone, sound equipment, audio, Digital camera, vidican.
4.Home appliances products: electric mop, electric vacuum cleaner, electric children toys, electric shoes,
electric blanket.
5.Medical devices
6.Instruments and meters: water meter, gas meter.
7.Electric transportation vehicles: electric bike, electric car, e-scooter, electric motor, electric trolley, electric cart.
8.Power tools: electric drill, mower
9.UPS, backup energy, storage energy.
Walkie talkie, smart watch, headset, set top box, bluetooth speaker, beauty instrument, Miner’ lamp, electric toy, emergency phone,

Knowledge of battery maintenance:

1. Maintenance of new batteries

The necessary visual inspection should be carried out before the new battery is installed, and it can be used directly after the inspection is free of defects. The battery is mostly half-full before leaving the factory, and the battery has been aging, and there is no need to perform special activation again. Before charging a new battery, ensure that the charger matches the battery to avoid battery damage.

2. Instructions for fast charging

For non-fast-charge series batteries, it is not recommended to use fast-charge devices to quickly charge the batteries. Fast charging will make the material transfer produced by the internal electrochemical reaction of the battery fail to keep up with the charge transfer, and the electrode material will produce large irreversible changes and lose capacity.

3. Battery storage

When the battery is not stored for a long time, the battery should be charged to 50%-70%, and the storage temperature should be below 25ºC.

4. Battery charging

When using an electric vehicle charger to charge an electric vehicle, you should first connect the charger to the electric vehicle, and then connect the charger to the power supply. If the sequence is reversed, it will easily cause a short circuit. Keep ventilated when charging, and place the charger on non-flammable objects, as the flammable parts of the vehicle.

5. Daily maintenance

During normal use, avoid overcharging and overdischarging the battery. During use, if the battery life drops rapidly, you should find professional maintenance personnel to inspect the vehicle and the battery in time, and you must not disassemble the battery for inspection. When used at low temperatures, the problem of reduced range may occur, which is a normal phenomenon. Care should be taken to avoid extending the range by increasing the charging time. When using it under high temperature in summer, it is strictly forbidden to expose the battery to the sun, charge it, and charge it directly without heat dissipation after use.

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