Thanks Markus, you’re right they do seem to be extremely picky on the voltages they’ll work with. I think there may just be something wrong with my current 6008 due to what I described earlier. My brother shipped me his 6008 to try and it worked perfectly with the 9.6v and 11.1v packs. It even seems to last long using the NiMH packs I was trying in mine. I guess I may need to pack up my body and ship it out to Paepke Fototechnik for a checkup and possible repair.

Thanks for the info on the pins Markus. I was able to complete the battery with 3 600mAh LiFePO4 2C cells, however my 6008 just says “Charge” when trying to use the pack. I thought that may be due to the 2C discharge rate being too low, but I tried this battery LiPO upgrade in this method: https://www.photrio.com/forum/threads/th... and still only got a “Charge” message from my camera. What I’m wondering now is if there’s just something wrong with my camera in how it is checking battery power, but that’s beyond my current electronics ability to know what to look for. I did notice that even with my NiMH packs it says “Charge” as soon as they fall from peak voltage off the charger down to their nominal output.

What did you use for the metal pins in your charger base? I’m having some trouble finding suitable ones to make a connector for the battery charger.