yes it can handle 3s lipos..ive been running mine at the track on just one of the 2s packs to make it more manageable..4s on the track is just to much power..i also ran it on a 3s and it was still pretty insane...the esc automaticly reads what cells you have in..it beeps 4 times for the 4 cells..and 2 times when you hookup just one batt..i made a harness so i can hook up just one battery..but when i feel the need for speed i put the 4s back in!!i will say it runs super cool on just 2s and 3s..but it does get kinda hot on 4s..hope this helps