Kratax 9v Rechargeable Batteries 2 Count 850mAh Rechargeable 9 Volt Lithium Batteries, 1000 Cycles Long Lasting for Smoke Alarms, Guitar, Microphones-Charger NOT Included

Multi-Protection: Kratax 9 Volt 6F22 lithium battery and chargers have passed ROHS, CE, CQC, PSE, etc. certification. Built-in protection device to prevent Overcharge, Overvoltage, Overcurrent, Over Discharge, Reverse Charge and Short-circuit protection, more secure to use.
850mAh High Capacity: Kratax 9v rechargeable batteries cycle life can reach 1000 times, 40% higher capacity than other brands of 600mAh lithium-ion battery, full
charge voltage: 8.4V - 8.7V, maximum
output current: 2.3A, larger capacity and ultra long lasting. The service life is 3 times that of alkaline batteries and 5 times that of carbon batteries.
Wide Compatibility: Our rechargeable 9v battery is suitable for various electrical appliances such as Wireless Microphone, Multimeter, Electric Guitars, Walkie-talkie, Toy Remote Controls, Smoke Alarm, Smoke Detectors, Cameras, Massagers, Alarm Clocks, Portable Radios, Transistor Radio.
Low-carbon and environmental: It does not contain any toxic and harmful heavy metal elements and substances, such as lead, mercury, and cadmium. Low self-discharge, is about 0.03 % per month, which is less than 1/100 of Ni-MH batteries, the weight of our battery is 30% lower than Ni-MH batteries.
The package does not include a charger, so it is recommended to use the matching charger.