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Rechargeable battery mod for P67 wooden grip.
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PostPosted: Tue May 23, 2017 6:19 pm    Post subject: Rechargeable battery mod for P67 wooden grip. Reply with quote

I put together this rechargeable battery system for my P67 (Which for some reason drains batteries quickly) I removed the manufacturer wood grip from the clips and took off the metal caps on either end. Fashioned a wooden tube to fit in its place. As there was insufficient room for the system I came up with and as I didn't want to damage the original top cap I soldered together a replacement cap from copper. I soldered on a cold shoe salvaged from a dead Konica SLR. The "battery case" is PVC tubing which I fashioned with a faucet spring for the negative contact and a "button" of solder for the positive. The cap for the battery case was a fortuitous bit of scrounging in my electric stuff. Its part of a 12V plug. Just happened to be close enough I could force it on. Using heat I was able to make the PVC soft enough to create enough thread bite to hold. The electrical socket on the top cap of the handle is a standard socket. I found 3V lithium rechargeable batteries with charger for twenty some dollars on e-bay.

the guts.

PostPosted: Sat Sep 16, 2017 2:03 am    Post subject: Reply with quote

Probable some capacitor was gone? However I use Sony videobatteries as universal power source - cameras, flahses, LED lights etc. they are 7.4V and I convert using cheap ebay DC-DC converters

PostPosted: Tue Oct 24, 2017 12:16 am    Post subject: Reply with quote

Hard to say without sending it to an expert for evaluation. I can't justify the expense to do that. This was a cheap (and fun!) project to solve the problem. Likely soon someone will have those batteries in a rechargeable version but for now this seems to work OK. I was going to paint the copper tube black but my wife said she thought it looked "cool" the way it was so I just sprayed it with clear lacquer.