SkyNinja
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ok i finally did this... in my garage between cars with dji prop guards (they arrived today).
it was far from lab conditions, but here are the details...
this is on a mavic pro platinum with dji low noise propellers. i use a uavmods battery adapter, but instead of the mavic pro one with the 2 t60 connectors, i'm using one i had for my mavic air with a single t60 connector because it is lighter and the pins leading out to the battery are longer which lets me place the battery pack further forward and well clear of the gps/compass. i hacked the pins up a little to fit and threw some heat shrink on the exposed pins. it works great and the proteks are always end up .01-.03v/cell higher than the dji battery.
protek is strapped on with an Apex RC "20mm x 400mm HD Rubberized Non-Slip Battery Strap"
the proteks were both charged to 4.31v/cell and had several break-in cycles to 50% as well as one flight down to under 20% on both.
without the additional battery, rpm was right around 5350rpm and with either 3600 or 4100, rpm was about 6060rpm.
i let it hover at about 3-5ft over the same spot and just let it go until it initiated RTH autoland.
i'm not sure why on the last test it waited until 10% to land. on that flight i was noticing that the displayed battery % was lower at a given voltage/cell than the previous one (10% 3.63v vs 10% 3.51v) so maybe the percentage isn't a proper indicator here.
i did the 4100mah test twice as the first time i started at 98% 4.26v and i knew i was leaving too much there.
i also noticed that there was an optimal height that seemed to cause a 5%-10% deviation in power consumed to hover. i confirmed this by switching to sport mode to get the power meter to show up. i tried to keep the drone in the same spot, but the first 4100mah test kept drifting
it went like this...
- DJI battery alone (for the testing baseline) 100% 4.32v (lowest cell) auto landed at 16% 3.59v used average 40% power to hover for 19 minutes 51 seconds
- 3600mah protek with DJI battery starting at 100% 4.33v (lowest cell) auto landed at 16% 3.66v used average 53% power to hover for 27 minutes 39 seconds
- 4100mah protek with DJI battery starting at 98% 4.26v (lowest cell) auto landed at 16% 3.69v used average 55% power to hover for 29 minutes 28 seconds (i felt like it was leaving a minute on the table with that low starting voltage, so i tried it again)
- 4100mah protek with DJI battery starting at 100% 4.32v (lowest cell) auto landed at 10% 3.63v used average 53% power to hover for 30 minutes 30 seconds
Thank you for doing the testing. I am definitely going to have to pick up a couple[emoji106]