Portable battery

[jotarokujo]

Hey guys i wanted to build a 1.5 to 1.6 kWh battery for a electric scooter which i could easily carry along with me and swap. I wanted to make a 72V battery. What cells would be good to go about building a pack such as this (Was looking at around 50+km range and around 40-45 kmph speed). Any particular consiederations or problems that might arise from this? Also is it possible to use different cells in parallel strings with effecting the battery pack as a whole ?

 

[john61ct]

What you propose is easy, very straightforward.

Cell selection is a huge variable, give us your peak vs average C-rate to start.

Do NOT bother doing this with used cells, buy top quality and new.

But at a minimum, accurately capacity tested, well matched, certainly same model, ideally all from the same wrecked EV.

And IMO scale down that speed expectation, at least as an average, if you want that kinda range.