How Many Volts Is A 9 Volt Battery. The ideal car battery voltage with the engine running is between 137 and 147V. 9V battery Amp-Hours at 100 mA Discharge rate.
If the battery isnt fully charged it will diminish to 124V at 75 12V when its only operating at 25 and down to 119V when its completely discharged. According to the Energizer Battery Application Manual a new 15V cell typically has an open circuit voltage of 158V. A suitable voltage for an AA and Triple-A batteries is something in between 11V and 15V.
But in theory I would keep the 9 volt battery for my hobbies.
Batteries are not rated in watts rather they are rated in amp-hours. Though the internal resistance may be or appear low around 01Ω for an AA alkaline battery and about 1Ω to 2Ω for a 9-volt alkaline battery it can cause a noticeable drop in output voltage if a low-resistance load is attached to it. How many amps does a 12-volt car battery have. How doe a 9V2 battery different from a 9V battery.
