Yy Universal Portable USB Emergency 2 AA Battery Extender Charger Power Bank Supply Box @VN

Giới thiệu Yy Universal Portable USB Emergency 2 AA Battery Extender Charger Power Bank Supply Box @VN

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Decription:
Features:
This AA Battery Extender has the power you need to keep your Smartphone running during
your air travel, camping, road trips or anywhere else you could face the prospect of a dead battery
High power efficent regulated output for Power and Charging your Smartphone
Mechanical safety design protecting your Smartphone from insertion of batteries with reversed polarity

LED power indicator
Pocket-sized for easy carrying
Specifications:
Quantity: 1pc
Uses two AA batteries (batteries not included)
approx. 8 x 3.3 x 2.1cm
Built-in DC-DC boost circuit, conversion efficiency is 88%~~93%
Input Voltage: 2.0-3.0V
Output Voltage: 5.0V
Output current: up to 700mA
Included:
1 x Charger