hello all,
can power be supplied by Li-poly battery instead of mains? if so what one would give a decent period before a recharge?
JFC!

Well how big of a poly are you talking about?
You would definitely need multiple items and multiple chargers for starters....
Using wireless? Extra hit on power.
Using infrared? Extra hit on power.
Using SD Card? Extra hit on power.
Many variables to consider.
I have used a 12,000 mAh battery attached to HD 1080px30fps daytime action cam for at least 10 hours with big memory card in MP4 < 20MB/s...
It does become quite silly swapping out batteries and charging. 3 12,000 mAh would be minimun even if you were awake at night to swap out a change.... I'd go with 4-5.....
What in the world are you trying to do exactly? I just don't see it possible with a 2330L.
p.s. I'm not sure of all my conversions of power and data rates, so don't ding me if I missed MAH or mAh or mAH or Mah etc....