GS - 2nd Gen (1998-2005) Discussion about the second generation GS300, GS400 and GS430 (1998 - 2005)

Car Battery Sat For Months

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Old Today, 05:04 PM
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naluloa
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Default Car Battery Sat For Months

Sooo like a dummy, I let my other GS400 sit for about 4-5 months, and last month I tried to move it and it didn't start.

The battery is dead, and my question is, if I use a starter pack thing to jumpstart my car, and I drive the car around for half an hour or so, will it bring back the battery? Or once the car battery drains, is it considered a paperweight? I had just bought the battery before letting the car sit for that long duration. So I really don't want to have to buy a brand new battery, when I practically didn't even use it lol.

Thanks guys!
Old Today, 05:38 PM
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Oro
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You can most likely recover it. Best is a slow charge (like 2amps) over a 48hour period. A 24F is about 90 amp-hours IIRC. Put 2amps into it over 45 hours, etc. This is vastly better for it than jumping it and driving it to charge it.

there are microelectronic battery conditioners widely available now. They can work very well. I have a Dewalt 80amp charger/starter combo with a built-in conditioning mode (runs on a 24hour cycle). It works great in bringing back abused/dead/old batteries. Has paid for itself on that alone.
Old Today, 05:41 PM
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naluloa
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Oh nice! Thanks for mentioning it. I'll look for one online. I'm glad it's not a lost cause, I was worried about that being the case. Thanks again!
Old Today, 08:06 PM
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Kira X
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Originally Posted by Oro
You can most likely recover it. Best is a slow charge (like 2amps) over a 48hour period. A 24F is about 90 amp-hours IIRC. Put 2amps into it over 45 hours, etc. This is vastly better for it than jumping it and driving it to charge it.

there are microelectronic battery conditioners widely available now. They can work very well. I have a Dewalt 80amp charger/starter combo with a built-in conditioning mode (runs on a 24hour cycle). It works great in bringing back abused/dead/old batteries. Has paid for itself on that alone.
This is really good information. I need try this next time.
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Old Today, 08:50 PM
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Originally Posted by Kira X
This is really good information. I need try this next time.
This is the current version of what I have, 30A charger/100A starter. Mine is slightly older model with 80A starter function and less “sleek” - but the same thing. It works great, is rugged, and the conditioner/reconditioner does work (run it quite a few times to get full effect). I tried some cheaper $20 trickle chargers w/reconditioning feature but they never seemed to be highly effective at reconditioning. This is.

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