Nope not right at all.

Why not keep this all together with your original thread?

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You need to measure the battery under load.

LiPo's start out with a higher voltage that drops under load not just it's voltage.

If you apply a constant realistic load, you can measure the amount of time before the battery hits a lower voltage limit.

This helps you determine the capacity of the battery.

Since a LiPo can have a bad cell, you could have a decent voltage reading, even when under some load...

But stick that battery back into a plane and you'll see that something is amiss.

That is one reason I suggested you may want to invest in a good computer controlled charger.

The CC charger lets you check the condition of the cells, the battery capacity, run times, etc.... all info that is helpful for you to know.

LiPos have relatively fixed lifetimes or cycle times. As you charge/discharge them their capacity diminishes... another reason to invest in the CC as this helps you to determine when your battery may no longer be safe to use.

You'll next wonder what "load"?

Well your best bet is to put the battery on your plane and measure the draw and run time... ideally with a watt meter connected between the battery and the ESC.

A static resistor load gives you unrealistic results, whereas a watt meter and the actual plane, gives you real world measurements.

BTW: On your F-35 the draw is QUITE high for the battery provided, so you need to avoid full throttle and keep the throttle in the mid range.