Rechargeable Battery for YC04B Smart Lock, 7.4V 4200mAh Polymer Lithium Battery for Fingerprint Door Lock, Keyless Entry Power Supply(YC04B 4200mAh)

This material ensures a longer lifespan, better performance in a range of temperatures, and a lighter weight compared to traditional battery types.Ideal For Modern Keyless Entry SystemsThis power unit is the ideal energy solution for various keyless entry systems, including biometric fingerprint locks, password-activated deadbolts, and smart automatic door locks.It is suited for homeowners, landlords, and businesses seeking dependable access control.Dear buyer, our batteries are all made of high-quality materials, with long battery life and all-round battery protection. Please use them with confidence. Wish you a pleasant shopping experience

• Provides comprehensive protection against overcharging, over-discharging, short circuits, and overload.
• This 7.4V 4200mAh rechargeable battery is specifically designed to be compatible with the smart door lock model
• Crafted with advanced polymer lithium-ion cells, this smart door lock battery provides superior energy density and stability.
• providing you with a reliable backup to ensure your lock never runs out of power. This high-capacity design offers extended usage between charges.
• This ensures absolute safety for your fingerprint lock battery and your home's locking system, delivering a stable voltage output for consistent operation.