At What Voltage Is A 12v Battery 50 Discharge. When discharged to 50 the voltage should read around 1235. The discharge voltage curves may be depressed by as much as 05 VDC from those shown on the graph.
Battery vendors typically specify fully discharged at about 195V per cell 116V for a 12V battery. So if you have a 100 AH battery consider the cut-off discharge depth being 50 AH. How quickly does a 12V battery discharge.
Voltage and power will need to be higher but the current should be identical.
This is called the open-cell or resting voltage of the battery. With experience one can accurately determine state of charge using a voltmeter. To determine or verify the 50 voltage. The simplest way to determine the State of Charge of an AGM battery is to measure the battery no-load or open-circuit voltage this is the voltage across the battery poles when no load is connected.
