9V Rechargeable Batteries 1300mAh, USB Lithium Long Lasting Battery, with 2 in 1 Charging Cable, for Smoke Detectors, Alarms, Keypad, Microphone (2 Pack)

【Excellent Performance】: 2 Pack 1300mAh high capacity batteries, tested by professional testers according to strict quality control standards, certified by CE and RoHS. BOANV 9V battery has longer battery life and fast charging. Up to 1500 efficient charge cycles. 【Safe&Fire Prevention】: 9V battery use Grade A+ battery cells with Red/Green led light display, safe and fire prevention PC+ABS material, with Over Charging Protection, Over Current Protection and Over Hest Protection etc. 【Smart Chip Battery】: The 9V Battery uses the most advanced built-in smart chip to control the charging process, and has overcharge, overheating, overvoltage and short circuit protection, automatically stops when fully charged. Long-life battery, no memory effect, provides constant voltage. Support longer working hours for commonly used equipment such as smoke/fire alarms, wireless microphones, toys, GPS, home security equipment, medical equipment, etc. 【Convenient USB-C Charging Design】: 9V Block Batterien uses a 2-in-1 USB-C fast charging cable, which can be charged directly anywhere without additional charger. The built-in LED light allows you to check the charging status. 【Important Notice】: This 9V rechargeable battery is NOT recommended for professional musical instruments. Many customers have reported noise interference that degrades sound quality. It is also unsuitable for devices requiring stable or silent power supply. This battery only supports charging via USB-C port. It is incompatible with standard battery chargers. Do NOT charge it in battery chargers. Do not use high-power adapters; chargers with rated current greater than 2A are prohibited.