RE: KATANA XL - new release
The guys and Hangtime Batteries (NOOBs) say you need a low impedence battery to power those digitals. Otherwise the current draw overcomes the RX during a violent sustained manuever and the RX could freeze while the digitals ? reprogram themselves??? Sumthin like that. NIMH is a different technology than NICADs. The most important thing to do at first is the initial formation charge at C/10. A large enough NIMH battery should provde the 4 flights without charge that you are wanting. What that size is I don't know. I am using a 1800 mah 6 volt, but I haven't flown with it yet. [:-]