No, I claim nothing about that 30 hours. I talked about it to find the consistency with my tests to show that flight mode turning on does increase battery life of my HA. As I have also said above, this is not precise and I do agree that they were crude charge measurements. However, the result and/or the conclusion are far from speculative, because the 50% gain of battery life in my tests is large enough to cover most of errors in measurement and setup, meaning maybe there will be not such 50% gain with precise tests, but the gain is certainly there.
About the claim 30 hours, I don’t want to argue about it just because I don’t have precise measure tools (it seems that Resound does not want to provide precise battery percentage in their app either). However, I would be skeptical about your conclusion “ReSound does not extend runtime at low charge levels” of your Quattros tests because the discharge curve of Li-Ion batteries is always steeper at low charge levels. Also, I would like to say that even if Resound does lower the performance of HA in low charge levels, it is the common practice and it is a good thing and I would not call it “cheat”.
It’s great to be able to exchange with people who want to know exactly how their HA work. Thanks again.