
Polymer Lithium Battery 3.7V 200mAh 501336 for Smart Watches Bluetooth Earphones. Custom OEM/ODM Service: Full customization available including model, dimensions, and connector types. High Production Capacity: Monthly output exceeds 3.5 million cells with 200 advanced machines. Wide Application Range: Suitable for wearables, medical devices, toys, and smart home electronics. Comprehensive Safety Protection: Features overcharge, over-discharge, thermal cut-off, and explosion-proof valve. Strict Quality Control: Grade A cells with IQC, IPQC, and OQC systems ensuring reliability. Multiple Certifications: Products certified with CE, UL, KC, CB, IEC, UN38.3, and MSDS. Flexible Payment Terms: Supports T/T, LC, PayPal, Western Union, and D/P options. 2-Year Warranty: Comprehensive two-year warranty coverage for all battery products.