invisible fence battery hack
thingiverse
this thing replaces the back end of an invisible fence battery. allowing for simple replacement of internal battery with standard cr1/3n or equivalent. you first take an old battery and cut the thin casing off the back. pulling slightly on a lead will pop out the old battery. you then slide in a new battery this thing will lock in the new battery by locking points in the thing to small holes in the battery leads
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