Mini 2 channel helicopters batteries

Hi all
I have been considering buying a cheap 2 channel micro helicopter just for a rainy day Boredom buster.
all seem to have a Li-Poly Battery which has about a 8 minute flight duration and take about 20-30 minutes to recharge.
Question is could the Li-Poly Battery be replaced with something like a AAA battery to give it more flight time
Cheers
Rhys
I have been considering buying a cheap 2 channel micro helicopter just for a rainy day Boredom buster.
all seem to have a Li-Poly Battery which has about a 8 minute flight duration and take about 20-30 minutes to recharge.
Question is could the Li-Poly Battery be replaced with something like a AAA battery to give it more flight time
Cheers
Rhys