Funjet Ultra 2 4s Li-ion battery

[@imotepRC]

hi, do you think 21700 Li Ion pack would fit inside?

[@unixoid33]

hello, could you please describe your setup, motor, prop and wahts li-ions packs?

[@lachezarkrastev7123]

can't remember man - It was t-motor and 4s 18650 sony 20A

[@unixoid33]

@@lachezarkrastev7123 What was your maximum speed? I have some old 2200 kv motor and an 18650 4s pack and at full throttle in a straight-line flight without decelerating only about 110 kmph.