Thanks for the reply Captain
Sorry, but some of these folks nitpick the "advertised" flight time that reads "up to X minutes" to death and present their flight time difference from what's stated in the "Up To" advertising in a manner similar to something being presented in a murder trial. For some of them a 30 second delta is almost like the end of the world. They take the flight time stuff
super seriously. For the record, I fly voltage, not time, and if the flight can stay in the air long enough to accomplish the mission, planned around a flight time of about 65%-70% of what a battery will allow, what's left over doesn't matter. I suspect you do similar and don't "fly out" a battery unless performing a test.
It may be you just obtained a 6300mA battery that works a little better than most in this capacity. My personal experience with batteries in the Yuneec case is limited to the stock Yuneec battery and a pair of 6300mA batteries from Gens-Tattu, where they provide essentially the same operational time between them. Sure, there are some minor flight time differences between them depending on the temperature of the H, the batteries, and their various ages but the use time is pretty darn consistent when they are flown under controlled or very similar conditions. What may be of interest is they all re-charge to full capacity in generally the same amount of time and similar milliamp counts after comparable test flights. A few seconds of charge time(<60) and minor mA input differences but nothing significant that would suggest the Yuneec and Gens-Tattu batteries are of different capacities.
The point I am trying to make above is the stock Yuneec battery for the H is highly likely to be a deliberately mislabeled 6300 mA battery, the same capacity as the one you tested. Without destroying a battery (costs too much for me to do) it's pretty hard to establish the true size but there's enough circumstantial evidence to permit a presumption of the stock H battery being a 6300mA unit, not 5400mA. The difference in performance is likely found through cell quality.and perhaps C rating I suspect the time improvement is more about cell quality than C rating though as higher C rated batteries are usually heavier than lower C rated batteries of the same capacity.
As you mentioned, higher discharge capability is available from a higher C rated battery. It would be interesting to see test results from several of the PowerExtra batteries to determine if the additional performance you obtained would be proportionally consistent across all of them. You may have been sent a battery that had been cherry picked by the maker. It does happen. From the Amazon ad we see the following statement, which references a similar flight time as what is mentioned on the Yuneec site, which is why I would like to see a few more samples tested for consistency.
"[Performance] With upgraded capacity 6300mAh, the flight battery provides 18-22 minutes' flying time on a single charge. The actual time may vary influenced by other factors."
I do like seeing the maker shipping a battery bag with the product. Really nice would be if they shipped the battery
in the bag
At ~$83.00 the PowerExtra battery lands in the middle of what we see for 6300mA batteries, which range from ~$120.00 for a Yuneec battery to $55.00 for a Gens-Tattu battery. and considering it comes with a fire bag is a pretty fair deal. It also qualifies for Prime shipping which is nice. Yuneec and their retailers add on a shipping fee for the stock battery so the Yuneec battery is really ~$5.00 higher in price than what's listed on websites. I'd buy the battery but I would not depend on a 3-4 minute delta in flight time as justification for the purchase. The fire bag is, to me, more of a reason to make the buy