Batteries state of health question

[Rollmops67]

Hello, and first a big thank you to Arpangosh for the app !

I have a question about the % shown in the battery part like here :

Is this a state of health percentage that is reported from the flightlog, or is it your software wich calculates this percentage ?
And if yes, how is it calculated ?

Greetings from France, Roland

[arpanghosh8453]

@Rollmops67 Thank you for your question!

So it's a simple linear estimation based entirely on flight count per battery, considering total lifetime is 400 flights.

A battery with 0 flights is 100% health
A battery with 200 flights is 50% health
A battery with 400 flights is 0% health

[Rollmops67]

Thank you for your fast answer !
OK I understand better now.

I was wondering why my battery "Mini 5 Pro batterie 2" with 2:35:28 flight time has 94%, less than for exemple the "Mini 5 Pro batterie 1" wich is at 95% with 3:18:17 flight time.
In fact the "Mini 5 Pro batterie 2" battery has more SHORT flights.
So I will take the percentage for what it is and try to have equivalent total flight times for each battery (for each drone of course)

Roland

[robo-w]

The batteries store also the charging-cycles. Is this data present in the flight records? Because a battery, which was charged 10 times for preparation and not used is potentially also in a worse state than a battery not used & not charged at all.

[Rollmops67]

Arpanghosh, it was no criticism of you fantastic software, and it is not really important.
Thank you again for your work !
Roland

@robo-w @Rollmops67

This has been addressed in https://github.com/arpanghosh8453/open-dronelog/releases/tag/2.28.0

Please note that you will need to delete and re-import/sync previously imported flights to fetch the new metric from the log file.

[Rollmops67]

Wow a big thank you !
You are very reactive.
I hope you take some time to sleep ??

Roland

[robo-w]

wow that was fast, thanks a lot!

[arpanghosh8453]

@robo-w @Rollmops67 You guys are welcome! This was an important feature so I tried to release ASAP. I know I am pushing myself a lot recently, but there is satisfaction from the community love.

It's a bummer that with such updated you need to delete and reimport logs, and I am sorry for any convenience. But that is the only way when I add some new extraction from the log files.