lifepo4

I have built two planes - FT Old Speedster and FT Storch and have not been able to fly them. I have a B (single) power pack and a C (single) power pack. I made a decision to stick with LifePO4 batteries, so I bought a couple Zippy 2100 3S 30C. They weigh 218g and only provide 9.9v. I put the...