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Old 01-23-2008, 08:35 PM   #1 (permalink)
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Saving a dead jump starter

I have a jump starter that i've allowed to get too low. Now it won't hold a charge for more than a day.

Is there anyway i can salvage it or get some other good use from it?


(example pic)

If you haven't herd of them before (but you probably have) here's how they work:
-Plug them in at night.
-The next day put it in your car.
-If your car battery dies during the next couple of weeks then you can use this Jump Starter to start your car up instead of bumming a jump from someone else's car.

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Old 01-23-2008, 08:38 PM   #2 (permalink)
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replace the battery that's inside of it. It's probably a SLA (sealed lead acid) 12v battery. You can find a suitable replacement from Radioshack. Every one I go into seems to have a few large-ish SLA's sitting forlorn on a shelf near the back, problem is that they're expensive, usually to the tune of at least $40
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Old 01-23-2008, 08:44 PM   #3 (permalink)
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Quote:
Originally Posted by AndrewJ View Post
replace the battery that's inside of it [...] problem is that they're expensive, usually to the tune of at least $40


i only paid $60 for the jump starter. For that i could just about go out and get a new one.

What about the parts?
It had a DC out plug, could display Red, Yellow, Green for jump charge available in the unit, and it would "Beeeeeeeeeeeeep!" if connected backwords.

Could i salvage those parts for anything if i decide not to rebuild it?
(i never saw inside one. I might try taking it appart this weekend)
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Old 01-23-2008, 08:52 PM   #4 (permalink)
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I'm sure you can find a MUCH cheaper SLA out there somewhere, $40 is just the exorbitant price that Radioshack charges for theirs.

As for the rest of the bits, sounds like you have the makings for a 12v battery charger if you should need one.
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Old 01-23-2008, 09:34 PM   #5 (permalink)
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Open it up and see if the sides of the battery are bulging.... If they are... I'd try desulfating (build your own circuit though - otherwise, spend $60). It may, or may not, work... It has worked for me in a kind of "lets get this done" ethos - but YMMV.
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Old 01-23-2008, 09:42 PM   #6 (permalink)
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K. thanks guys. I'll open it up this weekend and see what i find. It should be pretty drained out by now.
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Old 01-24-2008, 07:14 PM   #7 (permalink)
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http://www.alwaysbrilliant.com/aa/as...y%20Jumper.htm

bout 45 bucks

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