the defalute discharge setting is10 days , should i change it to 3days ? . what setting are you useing any why . do you have to do it too all of my batteries or will the app do it for me .
thank you

Pondering this as well,  I am.

Last I heard/looked, there was no menu to change default discharge time to less than ten days. For the Spark of course.

Yes...I've never heard of a way to change the way an Intelligent battery depletes itself.

I'm pretty sure it is not supported on the spark batteries. You can do it on others though. Not sure which ones, Phantom 4P for sure.

For a larger brother (Mavic) you can choose from 3 options, but the Spark battery firmware fix is ​​set to 10 days. Battery life increases if you do not fully discharge it (below 10%) and do not store it for a long time full charge. The chemical processes are optimized at this time. Of course, even then, the battery gets older, just slower.
If you want to fly with Spark, do not upload it, save it to 50% and cool (slow down the chemical processes). Make up to 100% before flying.
And use a battery clamp, for me, the new longer-toothed battery, dropped off in flight (Spark survived).
battery clamp

thank you one and all . maybe on the next up date it will be included .

Thanks for the inquiry. You can discharge the battery whenever you're about to store your aircraft and will not use the battery to maintain the performance of the battery. Thank you for the support.