On a similar note, I'm running two Venom 5000 mah 4s 35C packs on a F550, NAZA, NTM series 28-36 750 kv motors, Turnigy 25A Plush ESC's, PhotoHigher AV130, Sony HDR-CX 580 video camera and 11x4.5 props, GVW is 3666 grams. According to eCalc I should be getting about 7.15 minutes of hard flight or 12 minutes of hover flight. I getting about 5 minutes of flight time before the LVT of the NAZA starts to blink red signaling me to land soon. I get about 7 minutes at best of flight before I feel nervous about landing. When I charge the batteries here are the readings I'm getting on the Trinton EQ (ElectriFly) charger: at the start bat. #1 - 15.79v, 3.1A, when complete readings are 16.79v, 01751 mah replaced. Bat #2 - 15.79v, 3.1A, when complete 16.79v, 1732 mah replaced. Charge time is just about one hour and sometimes the charge has ended I get a reading of 248ma instead of 0ma which makes me think the battery still needs to be charged.
I'm not too familiar with all the voltage usage rates for these LiPo batteries but it seems to me that they are not being depleted enough to take advantage of the juice available. What percentage of the total mah should be used on a pack this size? When I was running a of 2200mah pack on my HoverThings quad it seemed like they were pumping almost the same amount back into the battery after a flight and I could sense the batteries were at their end because the quad would begin to de-stabilize and need to be landed. I've read here that some are disabling the LVT setting on the NAZA in the assistant and I'm wondering if that is something I should do and rely on setting my timer on my tx instead. What kind of low voltage alarm would you recommend?
Thanks,
John