Is 4S+3S in serie possible?

[Over_revO]

Hi guys, i was wondering if it would be possible to plug a 4S and a 3S battery in serie?

To make the power the closest possible to 26 volt (for Neu 1527 1d 2300kv)
That would make 25.9 volts?

It would run 2X= 4S+3S in serie

And also would the MMM esc be able to handle 25.9 despite the 25.4 volt spec?

Thx for any suggestion to get that motor running at 26 volt? :)