Only one aa battery is needed 5 mobile charge adaptors enclosed(motorola/nokia/samsung/sony ericsson/lg) Can charge mobile phone, other devices in the future. Adds up to 1 extra hour of talk time or up to 24 hours of standby time. Input voltage:1.5v, Output voltage:5.7v+0.5% Input electricity:750mah-2000mah Output electricity:150mah-430mah ( depends on different quality battery) Utilizing battery efficiency:80%-90%
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