Solar Power Bank Built Cables 20000mAh Solar Charger 2 USB Ports External Charger Powerbank with LED Light
Power Bank is a portable charger that can be carried by individuals and can store electrical energy. it is mainly used to charge consumerelectronic products such as handheld mobile devices(such as wireless phones and laptop). it is especially used in situations where there is no extemal power supply. its main
components include... a battery used for energy storage, a ciruit (DC-DC converter) that stabilizes the output voltage, and most mobile power supplies have a charger for charging the built-in battery...