What battery
 

What type of battery?

I have a 110mAh NiMH in my clone and a 150mAh NiMH in my clone, and let me tell you these things last forever! Literally 10+ minutes with good power. However I didn't vote because I've never used a NiCD so I can't speak for both of them.
-Cyrus

do you charge your 110nimh 2 times and you 150 3 times the length of time with your charger?

I charge them about 3 times when I fully drain them, but I've only done that twice! Most of the time after I finish running I charge is once, but it doesn't need to be charged. Oh I forgot, my Bit came stock with a NiCD. It would last about 3-4 minutes of run time for me.
-Cyrus

can you do a duel cell mod and use a nimh and nicad

yes but it will eventually cause problems. you want them to be as evenly matched as possible.