Portable Power Bank
Portable power banks are lightweight compact rechargeable battery packs that can provide instant charge in emergencies for electrical items such as phones and tablets. Most of these power banks utilise modern lithium-Ion technology batteries and are charged/discharged via a USB or a micro-USB port. The mAh rating on the power banks relates to the charging capacity of the batteries, with a higher mAh rating providing more energy for longer.
Please note: During the charging and discharging process these portable power banks may naturally get warm, which is perfectly normal.