... : 15g Material: ABS PVC hotselling usb charger, mobile phone car usb charger AA battery powered 1: USB chargers are smart, absolutemini, and ... : It can be used simply and can charger for lithium battery, such as mobileand digital cameras. 3: It be safety to ... negative automatic conversion,not requiring users to re-adjust the battery positive and negative. 7: And there is another product called ...