Description of polymer lithium battery performance parameters:
Nominal voltage: 3.7V
Nominal capacity: 550(mAh)
Battery size: 5.0*30*40(mm)
The battery internal resistance: 80 or less Ω (m)
Overcharge protection: Charger is added between P+ and P- to charge the battery. When the battery voltage is charged to the overcharge detection voltage (4.2±0.04V), the circuit action is protected and the charging path is cut off to achieve overcharge protection.
Overdischarge protection: Connect the load between P+ and P- to let the battery discharge. When the battery voltage drops to overdischarge voltage (3.0±0.1), the protection circuit will act and turn off the discharge path to realize overdischarge protection.
Short circuit protection: When P+ and P-short circuit, the protection circuit will act quickly within 5-50us to cut off the path and realize short circuit protection.
Overcurrent protection: When the voltage of the V-terminal reaches (0.15±0.02V), the protection circuit will act quickly within 5-26ms to cut off the path and realize overcurrent protection.
Cycle time: 80% after ≥300 times
Applicable temperature: -20/+60(℃)
Applicable Fields:
1) Communication equipment: cordless phone, mobile phone, fax machine
2) Audio-visual equipment: video camera, portable stereo, MD player, portable DVD and VCD player, wireless speaker
3) Electronic devices: laptops/laptops, Pdas, and portable fax machines

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Note: The assembly mode of the battery can be customized according to your requirements, such as protection parameters, combined voltage, battery capacity, battery size, package color, matching plug, etc.