Resources:Datasheet
Single-Cell Li-Ion and LiPo Battery Protection Module with Overcharge, Overdischarge, Overcurrent and Short-Circuit Protection
The 7Semi BQ29700D Battery Protection Module is a compact battery safety solution designed to protect single-cell (1S) Li-Ion and LiPo batteries from common fault conditions that can compromise performance, reduce battery life, or create unsafe operating conditions. Built around the Texas Instruments BQ29700D battery protection IC, the module continuously monitors battery voltage and current to provide automatic protection during charging, discharging, and storage. Its compact PCB design makes it easy to integrate into space-constrained battery-powered products.
Ideal for portable electronics, IoT devices, wireless sensors, robotics, wearable electronics, medical devices, and embedded systems, the module automatically disconnects the battery during overcharge, overdischarge, overcurrent, and short-circuit events. The low-power protection circuitry minimises battery drain while enhancing system reliability and extending battery lifespan. With onboard battery connectors and a wide operating temperature range, it offers a dependable protection solution for custom rechargeable lithium battery applications.
Key Features

Texas Instruments Protection IC: Based on the BQ29700D single-cell lithium battery protection IC.
1S Battery Support: Designed for single-cell (1S) Li-Ion and LiPo battery packs.
Overcharge Protection: Prevents excessive charging voltage to improve battery safety and longevity.
Overdischarge Protection: Protects batteries from deep discharge and capacity degradation.
Overcurrent Protection: Detects excessive discharge current to safeguard the battery and connected circuitry.
Short-Circuit Protection: Automatically disconnects the battery during short-circuit conditions.
Automatic Fault Detection: Monitors battery conditions and restores operation after fault recovery.
Low-Power Operation: Minimises standby current for extended battery runtime.
Compact PCB Design: Suitable for portable and space-constrained embedded systems.
Easy Integration: Onboard battery connectors simplify installation into custom battery-powered products.
Wide Operating Temperature: Reliable performance from -40C to +80C.

Applications

Portable electronic devices
IoT and wireless sensor nodes
Wearable electronics
Rechargeable consumer products
Robotics and automation
GPS trackers
Portable medical devices
Smart home devices
Handheld instruments
Industrial battery-powered equipment
DIY battery-powered projects