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Old 03-18-2012, 08:16 PM   #1
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Can I charge my drained interstate batteries?

I was bad and let my deep cycle interstate batteries drain this winter. I just hooked up a nice trickle charger and it indicates they have less than 3 volts charge so the warning light lit up.

When the deep cycles are that low, is it possible to recharge them or worth a shot? They are from 2008.

Assuming the answer from the responses is no, any recommendations on where to buy the same model cheaply?

Thanks.
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Old 03-18-2012, 08:39 PM   #2
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If they are gel it worth a shot but you will not be able to use a trickle charger. Disconnect the batteries from your electrical system, then using jumper cables, you can raise the charge level high enough using another running vehicle. You probably cut their lifespan in half.
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Old 03-18-2012, 08:51 PM   #3
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Originally Posted by dpe01 View Post
If they are gel it worth a shot but you will not be able to use a trickle charger. Disconnect the batteries from your electrical system, then using jumper cables, you can raise the charge level high enough using another running vehicle. You probably cut their lifespan in half.
They are not gel. They are the original interstate lead acid batteries.
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Old 03-18-2012, 09:31 PM   #4
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You never know till you try. Ive had batteries come back from flat and still got a number of years out of them. I think it was an exception though, generally if you kill them they are never the same after. I'd charge it and then do a good capacity check and go from there....Good luck.....Phil.
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Old 03-18-2012, 10:00 PM   #5
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There is nothing worse you can do to shorten life battery

You always want to keep the batteries charged up, protects lead,acid and from freezing. Only deep cycles can bounce back from deep discharge. Sorry to tell you there are only handful of real deepcycles made. Real ones only state amp hour no cranking info. One's in AS are going to be dual purpose, hi breed of starting battery and real deep cycle. DC are heavy Trogan makes real ones,lifeline,rolls and some reports East Penn Dekas maybe. One way to get real DCs that do not cost arm and leg go Golf cart batteries. For sure put a charge on ones you have right now going to take 12hours to charge lol. Also if you need new ones head over Walmart get marine batteries they have size 27 DC and 29 it's heavy sucker. Have had good results without any hassles buying new battery. I am running WM 29 as starting battery for boat and East Penn deka for trolling motors in size 31. One way to tell quality is by weight. If you want Deka brands batteries plus has some good ones. Also during winter it is good idea to trickle charge them they can loose 5 % charge each month just sitting. Believe it or not fully discharged battery will have water inside, though I would not drink it.
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Old 03-19-2012, 12:20 AM   #6
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Look down the side of the batteries. If they are bulged out they probably were froze. Chances are good that they are shot if they are bulged out.
Can't hurt anything to try and charge them, but they may not hold a charge for long.
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Old 03-19-2012, 01:44 AM   #7
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Hi, I and a few other's on this forum, have noted that the batteries usually only last about three years; Time to buy new batteries.
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Old 03-19-2012, 07:26 AM   #8
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After 30 months of medium use, my OEM group 27 Interstate's were shot.

Not sure if it was the Airstream parallax converter/charger, lousy batteries, or both. I'm not convinced those were true 'deep cycle', anyway...

Replaced with a pair of group 31
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Old 03-19-2012, 08:28 AM   #9
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Batteries that sit dead for long periods of time sulfate up. You might get them to charge again but they lost some life. If they were true deep cycle batteries your chances are better. Get you a real battery charger and give it a try. Harbor Freight has some chargers and they are supposed to have a de-sulfate mode. I think this is just high bursts of current to cook off the sulfate. When car batteries go a cell usually shorts. If you pull the caps you can usually see plates that are warped and falling apart which is a sign that they are not long for this world.

Perry
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Old 03-19-2012, 08:43 AM   #10
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using a maintenance charger that desulfates the plates will keep the batteries good for years. I use a BatteryMinder plus. It has saved a lot in battery replacements cost.
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Old 03-19-2012, 09:57 AM   #11
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Quote:
Originally Posted by finalcutjoe View Post
After 30 months of medium use, my OEM group 27 Interstate's were shot.

Not sure if it was the Airstream parallax converter/charger, lousy batteries, or both. I'm not convinced those were true 'deep cycle', anyway...

Replaced with a pair of group 31
Where did you buy this replacement and what specs did you look for when replacing them? I am not a battery expert but if I am going to spring for new batts, I'd like to get good ones that have the best power possible. Any guidance on what specs to look for would be helpful everyone!

Thanks
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Old 03-19-2012, 11:22 AM   #12
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bong'

I picked them up at an 'Auto Value' center here: Tekonsha, Michigan (MI) | Auto Parts Store | Courtesy Car & truck (USA)

Nothing fancy. Basic deep cycle, flooded lead acid. To be honest, all I looked for was the biggest thing that would fit my battery box
These measure 6-5/8"w x 12-3/4"L x 8-1/2"h

The fact that they weight just shy of 70lbs a piece (and not maintenance free), was a good sign.

The pic shows them on my 3 stage charger- when winterized.
This one: Guest 2 bank 10 amp per bank, battery type charger
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Old 03-20-2012, 08:24 PM   #13
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Maybe you have advance auto near by

There is always $40 off $100 coupon floating around retailmenot. They do not ship batteries so pickup only item. With coupon you can score Deka DC in size 27 or 31 for cheap. 3% charge is almost futile to try charge but worth a shot. There are few options on batteries but interstates are not that great, they were 20 years ago. Ok here is link $89 plus core add something $10 then get $40 off. Say's dual purpose same as interstate, real DC would be my preference though. They would work as long keep them charge 100percent


Buy Autocraft Marine 12-Volt Marine/RV Dual-Purpose Service Battery 31DP-6 at Advance Auto Parts This is big size 31 will need new 31 box
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Old 03-29-2012, 02:38 PM   #14
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A suggestion is to hook them up to a battery discharger, most golf car dealers have one. Run the discharge down to zero and then hook them up to a real charger and let them try to take a full charge. If the cells were dry OR the batteries were frozen over the winter don't waste your time, dispose of them and get new ones.
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