14500 + AA 2up battery holder

thingiverse

I made this for 14500 batteries, but it will likely fit AA's. You may have to toss a few more raps of wire on the ens to snug it up a smidge for the AA's. I was surprised how well this actually printed, I didn't have high hopes, it can probably be optimized. I needed the smallest package possible while still being able to drop the battery's in and out without welding/soldering/gluing/taping ect... anything onto the batteries, preference being a friction/"spring" fit. In other words I just wanted to use the batteries as as without modifying them, while being able to toss a new set in when they went dead without tools (small RC car for my son). nothing fancy here, I just wrapped some wire around the ends of the holder to make contact with the +/- terminals on the batteries. The thing bumps and slams into everything, no suspension, SUPER short wheelbase, one of those ones that doesn't have an up because the wheels are so big, also tank drive and impossible to control, and I have not had a battery shake loose from the holder yet. so I am calling it a success so far! I added a hole so I could pop the batteries out easier, but haven't printed it yet. If anyone ends up printing this before I get to it, let me know if that hole works out? I eventually may make one with slits for that nicle ribbon or whatever material is best here, also I may do some for some of the larger batteries 18650 26650 ect, I have a project coming up soon, but I have to find out how much current is reasonable to send through one of those spring tab things first. I like the idea of not welding that nickel ribbon to them if possible!! just keeps it simple!!!