3.7V 500mAh Lithium Polymer Battery Compact 502248 Size for Bluetooth Earphones

Price Negotiable

Price: Negotiable

MOQ: 100pcs

Delivery Time: 7-10days

Brand: RESKY

Product Description

Factory Lipo Batteries 502248 3.7V 500mAh 1.85Wh Power Lithium Polymer Battery Cell For Bluetooth Earphones

High-performance rechargeable lithium polymer battery designed for LED lights and various electronic devices. Features stable voltage output, long cycle life, and excellent safety performance.

Technical Specifications

Item	Specification
Battery Type	3.7V 500mAh LiPo Battery
Charge Voltage	4.2V
Nominal Voltage	3.7V
Nominal Capacity	500mAh @ 0.2C Discharge
Charge Current	Standard: 0.2C Rapid: 1.0C
Standard Charging Method	0.5C CC charge to 4.2V, then CV charge till current ≤0.05C
Charging Time	Standard: 2.75 hours Rapid: 2 hours
Max. Charge Current	0.5C
Max. Discharge Current	1.0C
Discharge Cut-off Voltage	2.5V±0.25V (0.2C)
Operating Temperature	Charging: 0°C~45°C Discharging: 0°C~45°C
Storage Temperature	-10°C~+45°C
Dimensions	Length: 48±0.5mm Width: 22±0.5mm Thickness: 5±0.2mm
Drop Test	Dropped from 1m height twice onto concrete ground (no fire, no leakage)
Cycle Life	≥500 times

Key Features & Advantages

Standard Compact Size: 502248 standard dimension with slim, lightweight soft-pack design for easy integration in space-limited devices
Stable 3.7V Output: Consistent voltage output with reliable 500mAh capacity and 1.85Wh energy density
High Safety Performance: Built-in PCM protection against over-charge, over-discharge, over-current and short circuit
Long Cycle Life: More than 500 charge-discharge cycles with over 80% capacity remaining
No Memory Effect: Supports charging at any power level without memory effect
Wide Temperature Range: Stable performance in -20℃ to 60℃ discharging environment
Quality & Customization: Excellent cell consistency with customizable wires, connectors, and protection boards

Application Areas

Smart wearables: smart watches, fitness trackers, health monitors
Bluetooth devices: Bluetooth earphones, speakers, microphone, TWS charging cases
Personal care appliances: beauty instruments, facial massagers, electric brushes
Consumer electronics: LED lights, remote controls, electronic toys, voice recorders
Smart home & security: doorbells, sensors, electronic locks, trackers
Handheld & medical devices: small testers, portable medical instruments

Product Images