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Discharge tests and capacity measurement of 9 volt transistor radio batteries at high current, 100mA to 500mA engineering data
current - Why mah drops while charging 9v battery? - Electrical Engineering Stack Exchange
Amazon.com: 9V Rechargeable Batteries, 1300mAh High Capacity Lithium-ion Long Lasting 9 Volt Batteries with 2 in 1 USB C Fast Charging Cable for Smoke Alarms,Microphone,Multimeters,Toys,Game Controllers (2 Count) : Health & Household