Overview: Compatible with most Lithium-ion batteries produced by formal manufacturers. Light in weight & easy to carry with the keychain. Easy to operate, safe & fast to charge battery. PC standard USB (Universal Serial Bus) port DC 5V power adapter. Standards applicable to the computer USB (Universal Serial Bus) port output of lithium batteries DC5V. Applicable to solar energy & mobile power USB (Universal Serial Bus) interface charge. Anode automatically converted circuit design. Input: DC5.0V -0.25 V Output:DV4 2 -0.05V MAX 300m A Ablue to Charge Original Mobile Phone Li-ion Battery Specification: Dimensions: 42 X 25 X 25 mm Weight: