Lipos are fine, not sure why everyone is against them so much. Just get a decent balance charger, and never over or under charge them, and they probably won’t explode and burn down your house.
OT, you said you were in the middle of the north island? Where? I’m Hawkes Bay.
Normally you use 10S/12S 1P >20C Lipos. The problem is that the VESC only have a total voltage LVC. If one cell comes unbalanced the VESC does not detect it… not everytime because the total voltage is over the LVC.
When you use 18650 you are going to use at least 3P. these three parallels will balance themself and the pack will stay probably longer healthy .
But the main point to use 18650:
LiPo charge cycles: ~1000
LiIon charge cycles: ~1500
If you balance charge, that’s no problem though, it’s always balanced at the beginning. I guess potentially one cell could discharge faster or slower and might cause it or others to be discharged a little more at the end, but that seems pretty unlikely to be an actual problem.
In the quadcopter world, no one monitors indivudual cells and I’ve never heard of it being a problem.
Fair enough maybe on the cycles, but is that really worth the extra cost/effort?
I had the problem that one cell comes unbalanced and now it is always the first cell which reaches below 3.5V… that is annoying because your pack has juice left but because of one cell you are fucked up… But i could be the only one who had this problem.
Well I got mine all good, I haven’t tested to see if they’re faulty or anything yet, but they offer a 6 month or 12 month warranty for refund or battery replacement. Pretty some someone else got it from fasttech here, not sure how they went but mine was fine.