Prices on these seen to have gone up. I am trying to find a suitable replacement for my Cyclone 3000w.
I am considering 2 options here, but not sure which way to go.
- Get the 15fet version (18fet would be physically too large), and try to beef it up.
- Or go with 2 identical 12fet controllers and run them in parallel.
The single 15fet controller would not be my first pick, due to them being more expensive.
Honestly, I like the idea of running 2 controllers in parallel. You could run one at a time, or both. That also gives you a 50/100% power range, as well as redundancy if one should fail while out riding. Plus the lower end 12fet units are pretty cheap.
I will be running 24s, so that will top out at 99.6v (charging cells to 4.15v). Also would like to push the amps to 60, vs the 40a my Cyclone came with. On avg, running 24s @ 60a will be around 5000w. Obviously not for continuous loads, just to be available if needed.
So which Sunwin should I go for? Should I just get one of the cheaper 72v 500w units and change the caps to higher voltage?
https://www.ebay.com/itm/60V-800W-Electric-Bicycle-Brushless-Speed-Motor-Controller-For-E-bike-Scooter/392072712255?hash=item5b495ad03f:g:JfYAAOSwQz1bHfPv
My concern is that these have been changed since people started buying them, and they are using much inferior mosfets. I need to be able to run up to 100v at the least, so going with a lower end model might get me lower rated fets.
Does anyone have recent experience with buying from Sunwin this year, that can attest to the 12fet units and what mosfets they are using?
https://www.ebay.com/itm/60V-800W-Electric-Bicycle-Brushless-Speed-Motor-Controller-For-E-bike-Scooter/392072712255?hash=item5b495ad03f:g:JfYAAOSwQz1bHfPv