The Doublepow 9V 650mAh USB rechargeable lithium-ion battery is a high-performance and eco-friendly alternative to disposable 9V batteries. Using advanced lithium cobalt oxide chemistry, it delivers stable power with a nominal voltage of 7.4V and a full charge voltage of 8.4V. The built-in Micro USB charging port allows convenient charging without a separate charger and fully recharges in approximately 2–3 hours from any standard 5V USB source. An LED indicator clearly displays charging status. Advanced protection circuitry safeguards against overcharge, over-discharge, overcurrent, short circuit, and overheating. With support for up to 1200 recharge cycles and wide device compatibility, it offers reliable, long-term, and cost-effective power.
