Battery Monitor Madness Deciphering Fluctuating Readings On-the-Go

Believe it or not, the battery acts as a capacitor when the car is in use, to keep the voltage level stable. If you see the voltage going up as ... it is normal. THe computer controls the alternators output. (to save gas). THis is based on the batterys charge, temp, and vehicle electrical ... Nope. That pretty much sounds like a dead battery. It sounds as though one of the cells has a short in it, which is causing your rapid ... Well, I disconnected then reconnected the leads myself...then the truck started right up, but the battery gauge/meter started fluctuating. The ... There is always the possibility that the battery is simply at its end of its useful life. Voltage readings of the battery and during charging ... I installed a AGM battery and with a volt meter I am reading 14.9-15.3 volts at the battery with it running in park. The needle on the dash ... It's not likely that the efi would even run on 4 volts. Try turning on the headlights, watch the volt meter and light brightness at the same ... They will intentionally let the battery charge drop while driving - battery voltage will drop to around 12.6v or so when this is occurring. I think that's normal. Instead of holding a fixed voltage the BMS drops the voltage during low demand. I suspect it's one of those tricks to ... It's caused by “clever” charging algorithms designed to save a few ml of fuel. This algorithm should only charge the battery once the battery ...