WebOct 25, 2024 · It only needs to drop down to around 10.5 volts to be considered fully discharged. If it drops down below that, the battery will become damaged due to excessive sulfation. Sulfation refers to the formation of lead sulfate crystals on the surface of the … WebOct 25, 2024 · It only needs to drop down to around 10.5 volts to be considered fully discharged. If it drops down below that, the battery will become damaged due to excessive sulfation. Sulfation refers to the …
How To Test a Car Battery
WebDec 28, 2024 · A fully charged car battery voltage (without being plugged into an external device) ranges from 13.7 to 14.7 volts. It will drop to 12.4 volts when the charge is 75% and 12 volts when it is at 25%. A fully … WebAug 28, 2012 · A battery that reads 10.5 volts is completely drained. If the battery is fully charged and only read 10.5 volts it needs to be replaced. ... Have no car key spare and need to cut a new one! No ... rogers dining side chair
Battery drops to 10.5 volts after charging
WebApr 25, 2010 · Whats the resting voltage of the battery when fully charged? It should read about 12.6v. Sometimes lead acid batteries that go bad will have a bad cell, and will only read about 10.5 or 11v when fully charged. Some older LA batteries will perform poorly … WebJul 17, 2024 · Yes, this is a bad battery. One of the cells has most likely shorted. Each cell is a little above 2vdc. A fully charged battery will usually be ~13vdc. If you lose one cell, it will drop it down ~2vdc, which puts it right down in the arena of 10.5vdc. WebSep 14, 2013 · This thread is in the wrong forum. You have a real STS (Seville Touring Sedan), not the later Sigma-body "STS". Moved to Seville. Your battery is toast and the DIC should show 14.2 to 14.8 volts when the engine is running above idle with normal electrical loads; about 12.4 volts with a good battery, engine off, key ON; about 12.6 volts using … rogers discount furniture