Dead Battery charging tips? - Dodge Challenger Forum: Challenger & SRT8 Forums
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#1 (permalink) Old 07-29-2009, 09:50 PM
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Dead Battery charging tips?

I awoke today with a dead battery. I'm guessing I have to crawl through the back seat to get to the manual release for the trunk.

I do have a auto battery charger, and have used it on my truck few times, but I know the battery in my R/T is a little different. Is it even safe to do so? Or a different setting the charger needs to be on?

Always good advice from my comrads on this site. Please share some knowledge with me so I may keep myself and my Challenger R/T safe.

Thanks in advance!

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#2 (permalink) Old 07-29-2009, 10:24 PM
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Connect your charger to the terminals in the engine compartment, and you should be able to pop the trunk.

2014 Shaker 869/2000
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#3 (permalink) Old 07-29-2009, 11:16 PM
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The battery charger has a 75 amp "quick start" switch on it, I've used it on my Expedition with success. Can I use that through the front engine compartment posts?
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#4 (permalink) Old 07-30-2009, 02:00 AM
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I do have a auto battery charger, and have used it on my truck few times, but I know the battery in my R/T is a little different.
The battery in you R/T is not different in any way. All flooded lead acid batteries are the same, and your auto charger will work perfect.

So what killed your battery ?

MM3
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#5 (permalink) Old 07-30-2009, 06:38 AM
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A "battery tender" from Deltran is the only way to maintain a proper charge over a long period of storage. We use them on everything from stand by generators to ATVs, Harleys, cars, trucks and have never experienced a dead battery....only if you have a good battery to begin with. My R/T battery failed the first day it was defective replaced by dealer and fine now.
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#6 (permalink) Old 07-30-2009, 07:38 PM
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As Mokeman3 said, just recharge in auto mode on the charger. Avoid the "Boost" setting unless you really need to get up and go. Just a nice overnight re-charge is all that's needed. The Boost setting send a lot of current into the system and that's never a good idea.

Slow and sure is best...IMHO..

Orange, 09 SRT, Loaded 6 speed
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#7 (permalink) Old 02-05-2010, 10:28 AM
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HI All
I have a 08 srt8 up here in Toronto. Since I purchased the car, june 08, I have had problems with hard starting. It cranks once or twice then evenually starts? the dealer has replaced the starter, and a left fuel pump? and now, since it is winter up here and the car is put away for the winter, everytime I try and start it ( about every 2 weeks ) the battery is dead. Any ideas? Could the problem have been the battery all along?
thanks guys
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#8 (permalink) Old 02-05-2010, 11:50 AM
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HI All
I have a 08 srt8 up here in Toronto. Since I purchased the car, june 08, I have had problems with hard starting. It cranks once or twice then evenually starts? the dealer has replaced the starter, and a left fuel pump? and now, since it is winter up here and the car is put away for the winter, everytime I try and start it ( about every 2 weeks ) the battery is dead. Any ideas? Could the problem have been the battery all along?
thanks guys
Sounds like a bad battery or you have something drawing too much parasitic battery current when the car is shut off.

I tested the parasitic current on my 09 SRT and it was only 30mA. This would take at least a couple of months to drain a good battery.

Look for the problem and also get yourself a Battery Tender.
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#9 (permalink) Old 02-12-2010, 11:28 AM
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dead battery

HI all
I did get myself a battery tender, but after 24 hours of charging the battery tender indicated that the battery was defective and should be replaced!

Now, being Income tax time, I was going over my invoices for my vehicles, and came across the sheet from the dealer ( last time serviced before putting away for winter ) a note from the lube person, that the electronic battery test indicated that the battery was very WEAK! You think that since the car was in for a hard starting problem, that maybe someone should have looked at the battery.... apparently not. I called the dealership and told them what I had found, and they replied " I guess we owe you a new battery" So I guess I will have to wait until spring to start the car again.

I did learn 2 things, one about battery tenders... great little machines
two, actually read the paperwork I get from the dealer.....

thanks for the help
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#10 (permalink) Old 02-12-2010, 12:10 PM
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How are you going to start the car in the spring to get it to the dealer? Before I risked having it towed to the dealer, I put a new battery in it myself.
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