RE: Brillelli/Extreme Flight COMBO!!!
I have and would use 2800 Li-Ion from TBM with6v reg and 2800 Li-Ion from TBM with 5.4v reg for ign. These are lighter then any nimh or ni-cad. Longer lasting too. You can read all the "whys" to use Li-ion batterys on TBM site (Troy Built Models)