1.Manufacturer,OEM accept 2,3.7V,Double ic 3.4-day standby time 4.full capacity 5.1-year guarantee Item mobile ... Voltage 3.7V Capacity 1200mah,1000mah,850mah PCB double ic,single ic,fake ic,according to your desired qualityWarranty 3-12 monthPackage 1000pcs ... /carton,18*26.5*50ctnMOQ 100PCS/modelStandby time 4 daysTalking ...