Power Banks

Power bank are popular for charging smartphonesmobile tablet devices, and other USB charged devices. They can also be used as a power supply for various USB powered devices such as lights and small fans. A powerbank is a portable device that can supply power from its built-in batteries through a USB port. They usually recharge with USB power supply. Technically, a powerbank consists of rechargeable Lithium-ion or Lithium-Polymer batteries installed in a protective casing, guided by a printed circuit board (PCB)which provides various protective and safety measures. Because a lithium ion battery operates at 3.7V nominal, voltage conversion circuitry is needed to drop the 5V USB input and raise the output back up to 5V.

CHOETECH technology brand provides compatibility interface for Micro USB, Mini USB, USB-C, lightning, etc., large storage, high quality power bank.