... one of series of portable high-energy "i-energy" and adopts A-grade polymer lithium-ion battery,with dual functions ... 18 mm Protect function: short circuit,over-current,over-charging,and over-discharging Weight: 140g Cycle life: over 500 times Working ... x 1,SonyEricssonx1,Samsung x1, Motorolax1)User manualOther devices connectors and wall adapter are optional according to the clients' request..Standard ...