Our 1S Lithium Battery Protection Board is a compact and highly reliable PCB solution designed to safeguard your single-cell lithium-ion (Li-ion) or lithium-polymer (LiPo) batteries from common hazards that can cause damage, reduce lifespan, or pose safety risks. This essential module ensures the safe and optimal operation of your battery-powered devices by monitoring key parameters and cutting off the circuit when necessary.

Ideal for integration into a wide array of consumer and industrial products, this protection board is a must-have component for any application using a 3.7V rechargeable lithium battery.

Key Features & Advantages:

• Comprehensive Protection: Integrates triple-protection circuitry against:

  • Over-Charge: Automatically stops charging when the battery voltage exceeds the safe threshold (typically 4.25V-4.35V ±50mV), preventing damage and potential swelling.

  • Over-Discharge: Cuts off the output when the battery voltage drops too low (typically 2.4V-3.0V ±50mV), protecting the battery from deep discharge which can cause irreversible damage.

  • Over-Current & Short Circuit: Instantly disconnects the load in the event of a excessive current draw or a direct short circuit, preventing overheating and potential fire hazards.

• Low Power Consumption: Features ultra-low standby current consumption, minimizing parasitic drain on the battery and extending its shelf life.

• Compact & Lightweight: Its small form factor and minimal weight make it perfect for space-constrained applications without adding significant bulk.

• Easy Integration: Comes with pre-soldered pads for easy connection to the battery and your device's load/charger.

• High Reliability: Utilizes high-quality ICs and components to ensure stable performance and long-term durability.

Typical Applications:

This 1S protection board is widely used in a vast range of portable electronic devices, including:

• Portable Bluetooth Speakers and Headsets

• DIY Power Banks and USB Chargers

• Electronic Cigarettes (Vape Mods)

• Toys, RC Models, and Drones (for small onboard systems)

• LED Flashlights and Torches

• Various IoT Devices and Wireless Sensors

• Medical Devices and Personal Care Appliances

Shenzhen BAKTH Technology Co., Ltd. was established in 2002. For 21 years, it has been dedicated to battery pack assembly and PCM/BMS design and production. It has a 5,000-square-meter self-owned factory equipped with automated production lines and SMT assembly lines.