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Forum: Electrical: Batteries, Generators & Solar 24-01-2023, 18:33
Replies: 8
Views: 1,907
Posted By JebLostInSpace
Re: Calibrating Battery Monitor

So after reading the marinehowto article a couple of times, I think I'm going to forgo the capacity test for now. Even though it's probably possible to get it close enough to right to be useful. It...
Forum: Electrical: Batteries, Generators & Solar 24-01-2023, 17:52
Replies: 8
Views: 1,907
Posted By JebLostInSpace
Re: Calibrating Battery Monitor

It's a Renogy battery monitor with 500A shunt. I don't have any kind of specific model number, but I think they really only make the one. I should have put that in the original post, but the reason I...
Forum: Electrical: Batteries, Generators & Solar 24-01-2023, 15:08
Replies: 8
Views: 1,907
Posted By JebLostInSpace
Re: Calibrating Battery Monitor

I actually observed the monitor jump from ~85% to 100% the moment the 40A charger turned on and supplied a voltage above my "Full Voltage" setting. So clearly the battery wasn't full at that point,...
Forum: Electrical: Batteries, Generators & Solar 24-01-2023, 15:06
Replies: 8
Views: 1,907
Posted By JebLostInSpace
Re: Calibrating Battery Monitor

Thanks for the response! I do have several follow-up questions:

How precise should the 10A load be if I try to do the test? I can probably come pretty close to that with my computer if I keep it...
Forum: Electrical: Batteries, Generators & Solar 24-01-2023, 11:06
Replies: 8
Views: 1,907
Posted By JebLostInSpace
Calibrating Battery Monitor

So I have just installed a proper battery monitor with shunt for the first time. I'm confident I have the wiring all correct, with all the amps in or out passing through the shunt. The device is...
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