Hey Bill,

I just traded off a Comp-arf 2.6 Yak 55sp with dual Batteries America 2200Mah Li-po's on the Rx and a 1900mAh Li-po on the ignition .
I ran 1 switch from Each Rx Batterie into aSmart fly 6V regulator(2Bats 2switches 1Reg.into 1 RX) and a Powerflite Adjustable Regulator set to 5.5 on the Da Ignition from the off the shelf @the LHS ThunderPower Battery...
I charged the Li-pos with my 4 output Powerflite charger(500Mah @8.4Volts) The li-pos charge exactly the same as the Li-ions do!!!

This particular setup will fly over 9-15 min flights!!!!! The plane now has over 200+ flights with no problems whatsoever.(between the new owner and myself)
Li-po's work well in giant SA applications!!

I recently aquired 2 4000Mah Li-pos for another big bird.. They are 1oz lighter than a 4cell 4800Mah Li-on....

Based on my experience ,I would have to say that Li-pos and Li-on s interchange well in GiantSA applications.

Dave