Black and Decker SPS 12V EPC12 Universal Cell Pack

My original packs are really old. Instead of buying new hand drill or new packs I gave 3D printing a try.

I had a 4S A123 Cells pack handy with standard XT60 plug - so I soldered myself a wire lead that converted XT60 to tabs + extra XT60 for charging using my charger. But the box is big enough to accept 3S 4000mAh packs as well. This will give plenty of space. If necessary you can just cut/slice the pack for your needs. Or scale.