More safe and environmental friendly; Higher power discharge Lower temperature resistance & good function in low temperature. Higher energy density & light weight than Lead-acid and lifepo4. wide application for Marine,energy storage system,UPS,EV.
* Specially designed for wireless BT earphones, earbuds and headphones with Micro USB ports.
* 300mAh capacity power bank can charge your wireless BT earphones for 5 times.
* Made of high-quality plastic material, durable and shock-proof.
* Mini size and lightweight design make it portable to carry.
* Built-in smart chip automatically matches the rated voltage and current of the earphones without harm.