Yideng manufactures the 801435 3.7V 500mAh Li Ion Battery Pack 1.48Wh for Smart Door Lock and security devices. Designed for long standby applications, this rechargeable lithium polymer battery delivers stable power output, low self-discharge performance, and reliable energy support for smart locks, access control systems, and backup power modules. Yideng provides OEM/ODM battery customization including terminal design, wires, PCM protection, and labeling solutions. Contact us today for OEM cooperation and orders.