Bao Xin 1800mAh Standard Li-ion Backup Battery for Huawei Ascend M860, Impulse 4G U8800, M650, E585, E5830, E5832, U8220, E5 etc Smart Phone Profession Business Battery (Huawei HB4F1 Battery) High capacity business battery for Huawei.All applicable models below in description.No NFC Charging voltage:4.2V;Output voltage: 3.7V; Capacity: 1800mAh; No Memory Effect,Environmentally Friendly.Smart overcharge ,short circuit protection Can be charged in phone or charger,available for more than 500 times recharge cycles Made with Grade A Li-ion cells and highest quality raw materials. Certified by CE / RoHS