We offer has best services, high quality, fast delivery and reasonable pricefor mobile phone battery1)Guarantee time: 1 year2)Cell chemisty PCM: Li-ion battery3)Working temp.: -10 - 50°C4)Battery charging time: approx 5 hours5)Double IC and NTC PCB offer over-discharging, over-charging, over-current and short-circuitprotection6)Safety and stable: Hi-tech lithium-ion battery, undergoes drop test, smash test and acupuncture testto ensure no fire and explosion in breaking