9V Rechargeable Batteries, 4-Packs USB 9 volt lithium batteries 1300mAh （11700 mWh）Long Lasting Li-ion 9 volt battery for smoke alarms, Multimeters, Microphones, walkie-Talkie,Toys,Guitar,Keyboard

TOTHL 9V Rechargeable Batteries is an Recyclable Batteries , can be reused built-in IC intelligent chip, can be built-in five protection intelligent lithium battery core, intelligent control of the entire charging process, to prevent over-charging, over-voltage, over-current, over-discharge, can be very good protection of the battery and the output of the constant voltage, suitable for smoke detectors, metal detectors, walkie-talkies, digital cameras, game controllers, toys, clocks and watches, and medical equipment.