I need to make replacement battery packs for some of my portable retro computer equipment. I have some 2300 mAH NiMH AA cells with pre-attached soldering tabs that I bought from eBay. I also might buy some 700 mAH AAAs (4 of the AAs won't fit in my HX-20). Does anyone here have experience with making packs from this type of cell, and/or are there any good primers or hint pages on the web that I could read? I've looked and looked.
I mean, I'm thinking it's as simple as taping them together physically in the right shape, and soldering the tabs with some short runs of stranded wire. Is that the ticket? Anything to watch out for?
Yup, it's that simple. I have built battery packs for RC aircraft that are high current packs. There are heavy duty 'links' made to connect to the terminals of the high current packs. The slightest variation in resistance at those amp rates will cause overheating. But in the low amp draw packs, I think you are looking at, it's less critical. I have had good succsess using desoldering braid as the conductor link.
One other note. Some of the cells I have bought off E-bay had solder tabs that where almost impossible to solder too. I think they were meant to be spot welded.
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