... charger, with built-in high-capacity rechargeable lithium polymer battery, can be used anywhere & anytime on your mobile phone, digital cameras, PDA ... . (900mAh or more, different models optionable match the lithium batteries of different specifications).Output voltage: 3.7V, 4.2V, 5. ... this solar battery charger straight out of the box?Depending on how long the device has been inactive, you may have ...