this has likely been hashed before, but is it insane that i have priced out the equipment and the cells to make a 10cell 36v battery for only a hundred bucks more than buying a ready to go new one? this is inlcuding everything i can find that i might need to build the battery, i had some of the tools, like a soldering iron, but i am including a battery spot welder into the cost (actually a spot welder and a hot air soldering station, not for soldering, i just don't have a heat gun for dealing with a big chunk of shrink tube, a hot air soldiering station would do it and it has more uses for 20 bucks more). i've been playing with electronics since i was 15 and before that i was into building lowrider bikes, is it really as much of a no-brainer option as it seems to be to me? looks like it would cost me about 3-400 bucks to rebuild the battery in my bike with 3 more cells (the pack will fit them, but i will probably have to destroy them and hope i don't destroy the aluminum case, they glued the cells in) including buying a fresh 10 samsung cells along with the tools i don't have to make it. to buy a 36v battery that i can't put inside my frame would cost about 300 bucks. is it unusual that getting the tools to make batteries appears to be ultimately more economical than buying a battery? eventually i'm going to need another one, and the parts to make the battery itself are only about a hundred bucks.