Battery Tester's Voltage Rollercoaster Overcoming Fluctuations While Driving

It sounds like the voltage regulator inside the alternator is bad. Just an FYI most all auto parts stores will test your alternator, battery, ... On the way home on a 150 mile drive we noticed the volt meter fluctuate between 12 and 14 volts (I had a fluke meter with me). It was warm ... yes perfectly normal. The ELD controls/adjusts the amperage outputted by your alternator depending on the load seen by the ELD. Apr 6, 2017 | 05 ... After 10 minutes or so of driving, the voltage of the battery will drop and hover in the range of 12.2-12.5. There are 2 ways is raises back up. Driving vibration may shake up battery and increase charge as gas bubbles get shaken out driving. Since you park with a maintainer plugged in I ... When the batteries need to be charged, the voltage goes up to 14.4v or so, and when it senses they are charged it drops way down, I've seen 12.9 ... Especially around here in the cold, they can die without much warning. If the cables are crapped up, you can try cleaning all the terminals and ... Hello, does your battery gauge fluctuate while driving? I do not know what normal operation looks like on the battery meter. I am thinking ... It still kinda sounds like the alt isn't doing anything and the battery is running the car. Vice versa, if the battery is bad voltage will ... Depending on the RPMs and electrical load it will fluctuate up and down. It should be in the 12-14v range most of the time though. Its only ...