>>2939909
Oh as for the contacts not connecting, you can see in my image that the top three contacts are sufficiently recessed that flat-top cells won't make contact, nipple cells are kinda required. If I could have made the front slivers of plastic thinner then it might be fine, but that's just not really feasible for a 3D print. This time I'm fine because I bent the remnant nickel strips around to protrude and make contact, but I'd rather get some better battery contacts anyhow. Like these ones.