My battery test after sitting 3 months

[19gtaz]

I took the original battery out of my 19 GT and let it sit for 3 months. Not the perfect test but some info for entertainment purposes.

Battery production date: 06/14/19
Voltage 3 months ago at the beginning of test (charged up): 12.84 v
Voltage today before load test after sitting 3 months: 12.71 v
Voltage after load test: 12.66 v
Voltage while applying 10 second 100 amp test: 11.02 v

I used a Battery Tender load tester I bought on Amazon:
https://www.amazon.com/dp/B089GZ3DHZ?psc=1&ref=ppx_yo2ov_dt_b_product_details

I used a Fluke volt meter model 115 that can store the lowest voltage while applying the 100 amp load.
Yes I know a starter can draw more current than that. The tester showed in the green for a 600 CCA battery.
Next up will be to let it sit a few more months with no charger and test again.
Enjoy the info and try not to get too serious. LOL

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[GrabberBargeCaptain]

As long as you disconnect the battery they can sit for a long time.

 

[GTP]

Or in OP's case, disconnect the car.

 

[jpjr501]

I run a 4.0A Battery Tender. It's hard wired to the car so when I'm done driving, I connect to the Battery Tender. Have bolted onto the wall right by the car.

My car is a 2020 GT with only 6,600 miles so I don't drive it much. I'd be going through batteries if I didn't have a tender on it all the time.

Anything under 4.0A won't charge the battery, only maintain. Get a 4.0A or more and it'll maintain plus charge.

Untitled by jpjr50, on Flickr

Untitled by jpjr50, on Flickr

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