Replacement 3.7V 500mAh Lithium Polymer Battery for Smart Bracelets with CE ROHS Certification

Price Negotiable

Price: Negotiable

MOQ: 100pcs

Delivery Time: 7-10days

Brand: RESKY

Product Description

Replacement 3.7V 500mAh 1.85wh Lithium ion Batteries 801350 Li-Polymer Battery for Smart Bracelets

Technical Specifications

Item	Specifications
Batteries	3.7V 500mAh LiPo battery
Charge voltage	4.2V
Nominal voltage	3.7V
Nominal capacity	500mAh @ 0.2C Discharge
Charge current	Standard Charging: 0.2C Rapid charge: 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 charge: 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
Dimension	Length: 50±0.5mm Width: 13±0.5mm Thickness: 8±0.2mm
Drop Test	Dropped from 1m height twice onto concrete ground (no fire, no leakage)
Cycle time	≥500 times

Main Advantages of Lithium Polymer Batteries

Flexible shape customization
Lightweight & slim profile
High safety with soft pouch structure
Low self-discharge rate
Long cycle life
No memory effect
Stable discharge performance
Suitable for miniaturized smart devices
Easy to integrate with wires & connectors
Full certifications: IEC62133, UN38.3, CE, RoHS

Advantages vs 3.2V LiFePO4 Batteries

Higher Nominal Voltage: 3.7V lithium polymer provides higher working voltage than 3.2V LiFePO4, delivering stronger power output and better performance in small electronics.
Higher Energy Density in Same Size: Traditional 3.7V li-polymer offers higher capacity and energy density in the same dimensions, supporting longer runtime for compact devices.
Wider Application in Consumer Electronics: Matches the charging and discharging logic of most small smart devices, with better compatibility and simpler circuit design.
More Mature Mass Production: Stable supply chain, lower cost, and higher consistency for mass production compared to LiFePO4 polymer in small-capacity sizes.
Better Low-Temperature Performance: Performs more stably in cold environments than most 3.2V LiFePO4 batteries, making it suitable for outdoor and portable devices.

Application

Laser pointers, Mountain bike taillights, Other small lighting devices, Bluetooth headsets, Smart bracelets, Mini speakers, and other wearable and portable electronic products, Dashcams, Portable auxiliary lights

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