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 Dead fred battery
#470671
06/30/04 05:52 PM
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Joined: May 2003
Posts: 484
OP
Mudrunner
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Just got back from vacation, and realized I hadn't shut the door all the way, letting the battery drain completely. I've tried jumping it, and nothing happens... its like I haven't even turned the key. Do I have to buy a new battery, or can I recharge it? Are there any computer things that must be reset?
TIA
Mitch
[color:"red"]1992 Monty SR, bouncy seat, custom steering wheel, torsion lift, BFG 31" AT, luxurious wood interior. 230k. [/color]
"Give the bully another point."
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Re: Dead fred battery
[Re: madmitch]
#470672
06/30/04 09:03 PM
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Joined: Jan 2000
Posts: 16,227
Web Wheeler
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Assuming the battery was in good condition to begin with (do you check battery fluid levels and top off w/ distilled H20 regularly? are the terminals clean of oxidation, etc.) and you didn't leave it discharged for several months, you should be able to recharge it.
Simply hook up the jumper cables again and run the other vehicle for 5 minutes or so at 2k rpm or higher before trying to start your vehicle. This will get the alternator in peak charge rpms (this is what AAA guys tell me anyways.).
Ray
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Re: Dead fred battery
[Re: off-roader]
#470673
06/30/04 09:27 PM
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Joined: May 2003
Posts: 484
OP
Mudrunner
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Thanks Ray, I cleaned everything and checked for corrosion, but the battery is sealed so I cant check water levels or anything. I tried the 5 min charge as well, but no luck. I think it's new battery time. <img src="/forums/images/graemlins/rolleyes.gif" alt="" />
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Re: Dead fred battery
[Re: madmitch]
#470674
06/30/04 09:38 PM
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Joined: Jan 2000
Posts: 8,160
Web Wheeler
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Its likely the cables are broken or not making contact. I assume your hooking negative to negative? Also, the doner vehicles engine should drop in RPMs once the cables are hooked up right, as it trys to charge the other battery. Cheap, thin jumper cables sometimes seem hopeless on a super dead battery, but a set of premium, heavy gauge cables will do the trick.
1996 SR From the Area 51 Skunk Works. 37"BFG Tires, 5" lift, Rock Track 4:1 Case, Tom Woods Drive Shafts, Oasis Air, Front ARB, lifted gas tank, T-max winch and lots of stuff that cost too much.
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Re: Dead fred battery
[Re: Lloyd Swartz]
#470675
06/30/04 09:40 PM
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Joined: May 2003
Posts: 484
OP
Mudrunner
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Broken cables... Thats a possibilty. My cables suck. <img src="/forums/images/graemlins/lol.gif" alt="" /> I'm at work, so I'll try again tonight. Thanks
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Re: Dead fred battery
[Re: madmitch]
#470676
06/30/04 10:59 PM
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Joined: May 2000
Posts: 6,132
Trail Leader
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It can take a pretty long time to get enough of a surface charge on a totaly dead battery to get it to be usefull. A couple of hours with a small charger can help a lot.
Personally I prefer to charge it overnight at a few amps.
87 Turbo Intercooled Raider, roller cam, torsen rear diff, LSD front diff, lockup auto with modified converter, V6 brakes, low transfer case gears...
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Re: Dead fred battery
[Re: Kevin C]
#470677
07/01/04 05:30 AM
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Joined: Jan 2001
Posts: 13,649
Web Wheeler
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I've got a charger with a timer, a 1 amp trickle charge rate, a 10 amp normal charge rate, and a 50 amp start booster. I think I paid about $40 for it, and it works even after I ran over it with the FJ55 and after about 15 years of rattling around in various vehicles. It even survived the FJ55 12" pine tree severing incident (missed my head by about 6" as it took out the windshield from the inside). I've even welded with it and a piece of coathanger wire in a pinch, but no long beads...
Not responsible for advice not taken...
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Re: Dead fred battery
[Re: fasteddy]
#470678
07/01/04 03:18 PM
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Joined: May 2003
Posts: 484
OP
Mudrunner
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Put the battery on the charger. . . It's hosed. New battery installed, fired right up. Case Closed!
Thanks for your help guys!
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