9V Constant Voltage Lithium Battery Microphone Multimeter Medical Instrument

Product information:
Specification: USB rechargeable 9V lithium battery
Product features:
1) environmental protection power durable and durable super Poly Ring Force
2) long storage time in line with EU standards.
3) it can be charged for 1200 times and is durable.
4) the discharge voltage of the battery is stable and the discharge current is uniform