Battery under load
I've been looking for an answer to a specific question, on past discussions on other forums and I also have an open topic on another forum but it always gets into the weeds of what batteries and what ...
Forum Discussion
Mandoguy wrote:
Same with $150 meters.
I don't understand what makes everyone think it's not working well.
From other reading I've done the voltage drop under load I'm seeing is not that unusual.
The little red meter from Harbor Freight is quite adequate and it is FREE with a coupon.
I don't think "everybody" thinks "IT" is not working well; just that it COULD BE and you should test and not guess.
I guess I missed the whole point of your original question.
YES, a battery's voltage goes down as it discharges. Perfectly normal. While it is under a significant load it drops even a bit more and comes back up a few tenths when the load goes away. Perfectly normal......until it gets discharged very low......then it goes down rapidly and stays there.
IF....you understand what the readings are trying to tell you, an inexpensive voltmeter is really all you need to make general diagnostic conclusions.
BFL13 is giving you some good information. All the information indicates that your batteries are failing.
