Finally I got my HP-67!

[mfleming]

(01-08-2020 05:42 PM)Artur - Brasil Wrote:  Eneloops?
Li-Ion charge module like TP4056, the ones with OUT and BAT terminals inline are very cheap, they are small, very cheap and can charge small or even large batteries easily. They feet on back off battery compartment door, as I did.
The rest of space are free for battery. As I used two Bl-5F (950mAh each) in paralell, i believe I got 1900mAh.
What is the battery you are talking about? Put a link and I'll get a better idea about what you think.

Artur

(01-08-2020 05:28 PM)Craig Bladow Wrote:  The batteries I have on hand are 1350 mAh. How would you charge the eneloops?

Here are a couple of pictures of a rebuilt Classic battery pack using Eneloop rechargable NiMH batteries. The batteries and associated metal bits are such a tight fit in the bottom half of the case that the top half presses into place very firmly.

       

I use a bit of copper sheet for the bar bridging a pair of batteries (+ to -) with notches as marked to fit the ridges in the case. The external contacts themselves can sometimes be salvaged from the battery pack if corrosion is not too bad, or they can be formed from 1/4" brass angle brackets using the original contacts as templates.

I generally mark painters tape applied to each end of the battery pack with the battery polarity, or I use tape inside the pack to mark the orientation of each battery. Flat-top batteries would make an easier fit into the case but then you'd need to seal the case with tape. A friction fit with the above arrangement holds *very* tightly, but can be prised open so that the batteries can be removed and charged in a regular charger.

Although it works great for me, naturally Your Mileage May Vary!
~Mark