Replacement Battery Specification
- Battery Model: YC009B
- Capacity: 2500mAh / 18.5Wh
- Voltage: 7.4V
- PIN: C+C- P-P+
- Battery Type: Li-ion
- Cell: Made in China, high quality guarantee
- Color: Black
- Condition: Replacement Battery (100% Brand New, 1-year warranty!)
Replace Part Number
- YC009B
- ZNS-31B
Compatible Model
- For Smart Door Lock with C+C- P-P+ Interface
⚠ Important Note: Please verify that your door lock interface (C+C- P-P+) matches before placing an order.
Product Features
- 2500mAh / 18.5Wh Li-ion battery engineered for smart door lock systems
- Precisely matched to OEM specifications for YC009B / ZNS-31B battery models
- Built-in battery management system (BMS) for overcharge, over-discharge, and short-circuit protection
- Stable 7.4V output ensures consistent smart lock performance and reliable access control
- Plug-and-play replacement — no modification or tools required
- Rigorously tested for safety, compatibility, and long cycle life
Why Choose This Battery
This replacement battery is designed for smart door lock systems using the YC009B / ZNS-YK005A battery model, restoring full battery life for home security, access control, and keyless entry applications. It is ideal for homeowners and property managers seeking a reliable, OEM-grade alternative to the original smart lock battery.
Key Benefits
- OEM-equivalent capacity (2500mAh / 18.5Wh) for dependable smart lock runtime
- Compatible with smart door locks using C+C- P-P+ interface and YC009B/ZNS-31B models
- Multi-layer BMS protection for safe, reliable daily charging cycles
- 100% brand new cells — no refurbished or recycled components
- Backed by a 1-year warranty and dedicated after-sales support