[Wide Compatibility: 9 volt batteries is suitable for smoke detector alarms fire alarms wireless microphone GPS metal detectors walkie-talkies digital cameras game controllers toys clocks and medical devices. 9V Rechargeable Battery: 1300mAh high capacity batteries about power more than Other Battery. Grade A+ cells ensure longer battery life and fast charging Up to 2000 highly efficient charge cycles are available. USB-C Charging Design: Unique USB-C Charging Design Convenient to charge anywhere directly with provided 4 in 1 USB-C fast charging cable no need extra battery charger. The build-in LED lights allow you to check the charging status. (Red means it is charging green means the battery is full.) Multiple security protection: Every battery is tested by professional tester under strict quality control standardsover temperature protectionover charging protectionover load protectionshort circuit protection and safeguard protection which can protect the battery well. 100% Guarantee: If you do not like our 9V lithium batteries please contact us and we will replace them or give you a full refund.]