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Help, please: Opening a sealed camera battery Answered

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I have several exhausted NiMH camera batteries, for a camera I rarely use anymore. The batteries (or perhaps the charging system) were awful. But I would like to use it as a backup--maybe by replacing the NiMH cells, or inserting smaller Li-ion unit... Anyone been successful at opening these? I think the seams are welded...

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theque (author)2007-10-19

did you try unscrewing that little screw on the top (in the picture). Although that probably wont help..

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gmoon (author)theque2007-10-20

I did try that...the end cap (left in photo) unscrews, too. No good.

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Punkguyta (author)2007-10-19

Well, squeezing a battery in a vice is a good way to lose the hand that is operating the vice. It should be pry-able but if all prevails, dremel+cut off disk.

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gmoon (author)Punkguyta2007-10-19

The last time I tried it, I didn't have a dremel. I do now, and that's a great idea. I've never heard of NiMH batteries exploding, although I guess they could if you overcharge/pump massive current in to 'em. This one is filled with several AA size tabbed cells. I'll be careful, though.

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Punkguyta (author)gmoon2007-10-19

It'll be fairly easy (at least for me :P) to only cut the plastic, however there is a plastic shell around those AA cells, like a heat shrinked film, then the thick metal casings on the batteries themselves. Don't be worried you couldn't even blow them up if you did get into the battery core. Usually...

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theque (author)2007-10-19

Im not quite sure what a vice is. But what i often do to get things like that open. just insert a thin flat-headed screwdriver and turn the screwdriver as if you were screwing something in. Be careful though, it can slip out and slice your hand pretty fast :p.

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Goodhart (author)theque2007-10-19

Here is a vice with a suction base:

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Patrick Pending (author)Goodhart2007-10-19

You can have to many vices ;-) Cheers, Pat. Pending

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Goodhart (author)Patrick Pending2007-10-19

Then you would have a vice squad LOL

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gmoon (author)Goodhart2007-10-19

Or be the vice president.

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Patrick Pending (author)2007-10-19

I open up old phone batteries for the rechargeables. I generally, cut with a hacksaw then put a flat bladed screwriver in the slot and pry them open. Cheers, Pat. Pending

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gmoon (author)Patrick Pending2007-10-19

Maybe that approach (with Punkguyta's) will work. Just prying sure didn't.

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Goodhart (author)2007-10-19

It would be difficult, at best, to remove the batteries without damaging the case they are in.

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gmoon (author)Goodhart2007-10-19

Yeah, that's why I didn't proceed any farther without some advice. But I have 4 dead battery units, and don't mind trashing some. I hope to have about a 50% success rate...

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