You might want to check out "SR Batteries" website, They build batteries for the aerospace industry, RC just being a side line for them and do some reading. Thats where my info came from amoung other sources. Its not that this or that might or might not work, Its about taking the least risk to get the job done without wasting a bunch of money. Nicads are still the most reliable battery out there, charge at a 10% rate, and use a loaded volt meter to check condition before every flight and chances of failure will be greatly reduced. Very cheap and reliable.