USB 9V Square Constant Voltage Li-ion Battery

The USB 9V lithium battery is a high-performance rechargeable battery designed for various electronic applications. Engineered with advanced lithium technology, our product maintains constant voltage throughout the entire discharge cycle, guaranteeing optimal performance for your devices at all times. Weighing only 25g, it is lighter than traditional 9V batteries. The high-energy-density design packs more power into a compact size, significantly extending device runtime.

These 9V rechargeable batteries feature a convenient bottom-mounted Type-C charging port that enables charging anywhere without requiring a special charger and can be reused hundreds of times, reducing battery waste and environmental impact.

Our product is safe and reliable, complying with UN38.3 and MSDS standards. It features multiple protections (overcharge/over-discharge/short-circuit) and an explosion-proof design. 

It supports devices that require long battery life and constant voltage characteristics to avoid false alarms, as well as some low-energy electronic devices, such as smoke alarms, line testers, toys, remote controls, thermometers, and other equipment,, providing you with long-lasting and stable power support.