ORIGINAL: phmaximus

Humm that's strange, that it can do 6cell and 7 cell nimh and 2s lipo. But no 3s.

I've seen ESC that do 7cell and 2s only but never them and 7cell

Did the paper say that it can handle 8.4v max or a 7cell battery?

Because a fully charged 7.4v 2s lipo is 8.4v
Fully charged 7.2v 6 cell is 8.4v
Fully charged 8.4v 7 cell battery is 9.8v

So the ESC might not be limited that high or it thinks it's a flat 3s lipo

What ESC is it running? If its the ezrun esc turn off the low voltage detection