Universal 12000mAh Backup External Battery Power Bank USB Charger For Cell Phone White for $19.99 + free shipping
•High output up to 5V, maximum 2.1A, minimum 1A.
•Allows Dual USB devices to charge at the same time.
•Charging via USB to computer system or power adaptor.
•The lithium-ion polymer, long service life, more safety.
•After 72 hours aging test, the product performance is stable.
•Super protection function: Core intelligent protection, overcharge protection, discharge .protection, leakage protection.