These batteries have a shorter charging time and longer service life. Batteries do not have a “memory effect” so the phones can be charged at any user-friendly time. Charge faster - use longer - feel safer! Features:The battery is protected against overcharging, overheating and ignition.Optimally selected discharge parameters maximize battery capacity. Compatible mobile phone models:Huawei P Smart Z.Huawei Honor 9X.Huawei Honor 9X Pro.Huawei P20 Lite (2019)Huawei Nova 5i.Huawei P Smart Pro (2019)Huawei HLK-AL10.Huawei HLK-TL10.Huawei HLK-L41.Huawei HLK-L42.Huawei STK-LX1. Note: the list of compatible batteries and smartphones may be not complete. In case of doubt, always ask a consultant for advice. Compatible part numbers:HB446486ECW. Specifications:Capacity: 4000 mAh.Type: Li-ion.Voltage: 3.82 V. Warranty: 12 months. Important information! Waste batteries and accumulators must be disposed of into specially marked containers.