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Sula
Trad climber
Pennsylvania
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Topic Author's Original Post - Nov 13, 2017 - 06:06pm PT
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I've come across a Hilti TE-5A rotary hammer drill (sans battery) at an attractive price. I'd like to equip it with a cable connection and an external battery pack.
One easy way to do this would be to start with a dead Hilti battery that fits. I believe the correct battery designation is BP40.
Anyone know where I might find one?
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WyoRockMan
climber
Grizzlyville, WY
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Nov 13, 2017 - 06:48pm PT
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I have a few 36v NiCd batteries from a TE6 I'd part with. Not sure if compatible.
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Sula
Trad climber
Pennsylvania
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Topic Author's Reply - Nov 14, 2017 - 05:34am PT
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The TE-5A is 24v. This link Pimp my Hilti does a good job of showing how to wire up external Li-Po batteries (in this case, two batteries of three cells each, yielding a nominal 22.2v).
I'm hoping to find a dead battery pack that fits, remove the dead cells and use only the housing with its electrical contacts. Googling suggests that the TE-6 uses a different battery geometry that probably isn't compatible.
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Jerry Dodrill
climber
Bodega
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Nov 15, 2017 - 08:08am PT
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This is pretty much the same setup I've been using for over a decade after a friend wired it up for me. The TE5A has been a real workhorse. Be sure to reinforce the cord where it comes out of the battery pack. We put a washer on the cord and tied a knot so it can't get yanked out, but when you constantly put the drill in/out of backpacks it gets pretty worn. Good luck finding your battery pack.
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