I charged my 3 batteries over a week ago but haven't used them due to the weather here.
I remember reading they were supposed to discharge til 70% because that it supposedly optimal conditions.
All 3 are on the latest firmware update.
Anyone else experience this?
Think my batteries are all okay?
Thanks for reading!

After 10 days
You may stop the count by checking on the status

S-e-ven Posted at 2018-1-8 09:05
After 10 days
You may stop the count by checking on the status

Awesome thank you!

Agree with S-e-ven, here is the manual for your reference.

S-e-ven Posted at 2018-1-8 09:05
After 10 days
You may stop the count by checking on the status

So does that mean every time you check the battery status (assume that is clicking the power button to see the leds light up) the 10 days reset from there? So if you clicked on the 9th day, it would revert back to discharging 10 days from then? Sorry for my lack of knowledge.

fans61e5664e Posted at 2018-1-9 01:24
So does that mean every time you check the battery status (assume that is clicking the power button to see the leds light up) the 10 days reset from there? So if you clicked on the 9th day, it would revert back to discharging 10 days from then? Sorry for my lack of knowledge.

Yes, you are 100% correct.

It will start discharging exactly on the 10th day of idling. It takes around two days to discharge to below 70%, so if you press the power button while it's discharging, it will stop discharging and will start the 10 day countdown again for the next auto discharge.

It won't discharge if the battery is lower than 65%

Dirty Bird Posted at 2018-1-9 03:01
Yes it resets the countdown if you press the power button.  The default is 10 days & you can modify the time-to-discharge in the app to 1-10 days.  The setting is maintained within the battery & each one must be set separately.

Unfortunately you can't set the time to discharge on the spark; it's fixed at 10 days

DJT_MVSP Posted at 2018-1-9 03:04
Yes, you are 100% correct.

It will start discharging exactly on the 10th day of idling. It takes around two days to discharge to below 70%, so if you press the power button while it's discharging, it will stop discharging and will start the 10 day countdown again for the next auto discharge.

Thanks very much for the claification! Much appreciated

10 days - discharge to 65% providing you don't touch the battery whilst in storage

I have never encountered battery auto-discharge.
Is it mandatory?
If the battery is used frequently and prevented the auto-discharge, what is the kinda impact?

KAPOzz Posted at 2018-1-11 01:03
I have never encountered battery auto-discharge.
Is it mandatory?
If the battery is used frequently and prevented the auto-discharge, what is the kinda impact?

If the battery is used frequently, discharging is not needed at all; the auto discharge feature is to extend the battery lifespan when it's not used and stored for longer than 10 days. If you store a "dumb" li-ion at 100% for more than 2 Weeks, the capacity of the battery will be significantly reduced. That's why "dumb" li-ion batteries only last about a year and why dji chose to use smart batteries: to make them last longer

To update this thread, the spark batteries are definately hard coded for 10 day discharge. I have not been able to reset the count by pressing the power button during the 10 days - it does not work. Has anyone experienced anything different?

As my knowledge with Lipo batteries for my rc car, lipo batteries should be set in storage mode 3 days max after their last charge, if we do not use them to avoid swelling.

In this case I don't understand 2 things:
- Why 10 days if the lipo manufacturers recommend 3 days to set them in storage mode if battery not used
- Why as some people says, the fact to push the battery button reinitialize the counter for 10 more days. That means it will destroy the battery if someone do that each 9 days for example ...

S-e-ven Posted at 2018-1-8 09:05
After 10 days
You may stop the count by checking on the status

Checking the status will restart the 10 days? Where did you find that?
I can believe turning the battery on as when connected to the AC might restart the 10 day counter.
But checking the status (charge level)? I question that.

Chuck101 Posted at 2018-9-20 01:35
Checking the status will restart the 10 days? Where did you find that?
I can believe turning the battery on as when connected to the AC might restart the 10 day counter.
But checking the status (charge level)? I question that.

You can do that, b/c it's probably not happening.
I got my informations at the time of my answer from other DJI pilots.
It seems that it was like that on DJI AC batteries, but got changed on some models.

But by own experience, which I have not had at that time ;-), is now pointing in directions of your doubts