Smallest Portable Emergency Dry Cell Mobile Phone Charger

Features: 

• This is a seriously small portable phone charger and it was primarily designed for emergency use
• Its small enough for you to carry it around whereever you go, such as on the belt,  keychain , wallets etc.
• Just use AA batteriees can help our mobile re-power. 

Techcical Parameters: 

1. Input Voltage: 1.5-3V 
2. Output Voltage: 5V 
3. Output current: 500mAh- 1500mAh 
4. Colors: Black/White/Blue, or custom colors 
5. Use 2*AA batteries 
6. DC-DC quick charging boosted circuit built-in, use 2pcs batteries can boosted to 5V, transfer efficiency can reach to more than 98%. Use new AA batteries can charge the Android phone (2500mAh battery) up to 40% within 30 mins. 
7. Built in protection circuit, when the AA batteries used or deviced charged full, it will stop itself. 
8. Output: Micro USB, USB