Unveiling Battery Woes Deciphering Tester Fluctuations on the Road

... battery and alternator, the two most common electrical problems in your car or truck! Check out this playlist for more DIY diagnostics tips ... For a new battery that voltage is a bad sign for the battery, like I said charge it and load test it. What brand ... Testing the battery, with the car on (headlights and heater on ... mine fluctuates, startup its around 12.8 for a while until i drive ... drops to 12.5 while driving ... If it keeps up, then have a FLAPS load test the battery no alternator at RPM you are seeing the fluctuations. You'd have to test the battery monitoring sensor and the battery itself to see if there is actually an issue or not. BUT I can say that the ... This depends on RPM, speed, temperature, electrical load, and other things. It could be changes in outdoor temperature, A/C usage, or any number ... 2021 got a warning “service charging system vehicle may stall” battery voltage fluctuates 14.5 down to 12.5 while driving can't see what the ... It sounds like the voltage regulator inside the alternator is bad. Just an FYI most all auto parts stores will test your alternator, battery, ... 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 ... Need Help? Ask a mechanic online, 24 hours a day here: https://tinyurl.com/24-7-mechanic In this video we'll talk about different reasons ...