9 V Rechargeable Battery, 1100 mAh Lithium Volt Block Batteries, Quick Charge via USB-C, Ideal for Smoke Detectors, Fire Multimeters, Long Lasting Power Pack of 2

High capacity and long-lasting 9 V battery: battery type: lithium-ion. Capacity: 1100 mAh. Voltage: 3.7 V/9 V. Rated energy: 4070 mWh. 9 V lithium batteries with USB-C charging: built-in USB-C port with included 2-in-1 cable, no additional charger required; LED indicator shows the charging status. Safe and reliable 9 V lithium battery: our 9 V batteries with multiple protection measures - overcharging, overtemperature, overload and short circuit - for increased safety. Long-lasting 9 volt block batteries: these 9 volt batteries with up to 1000 charging cycles, low self-discharge, constant output voltage reduce waste and save money. Wide compatibility 9 volt lithium batteries: this 9V battery can be used for smoke detectors, fire alarms, digital cameras, walkie talkies, toys, game controllers, GPS units, watches, security devices and medical equipment.