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with just some pliers and a good quality 9v battery you can open a 9v battery without damaging the internal cells so they can be used as a replacement...
go and grab your pliers and a good quality battery. I use a energizer battery but a Duracell might do it as well.
get your pliers and pinch the middle of one of the long sides then bend th metal back, don't worry about the dints in the metal it makes just keep goi...
keep going along the long side lifting the lip up until you get to the corners.
corners are a bit trickier than the rest of the battery. use the corner of the battery that is closer to the fold in the steel. lift the lip of the ot...
keep going on that shorter piece you started on and then do the opposite corner.
do the 3rd corner on one side and it should start to lift. pull it out after this happens.
you will find at this point that there is a little piece of paper in there. pull that out to reveal the batteries.
give the battery cells inside a good shake and all of the cells should fall out along with the bottom. if you open up the bottom layered sort of thing...
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