Bad news for future MM users.

[BrianG]

Honestly, the MM should be easily capable of 4s since it is rated for 12 cells, which is VERY close in voltage (both right-off-the-charger and nominal). There's even a 4s LVC setting. However, I've always thought 5s was too much to expect, and still don't think it should be used in larger vehicles even though it could technically work.

[lutach]

My MM worked flawless today on 4S. It was only warm after about 8 minutes. Now days any manufacture should come out with ESC that can handle 6S without a sweet. If the FETs have a rating of 30V or more they should be able to handle 6S and make it the limit. They should also offer ESC capable of 12S lipos for those who likes to run HV and less AMPS.