Originally Posted by
steelbikeguy
I Regarding discharging the battery all of the way... it's generally not good for the battery.
Yes, unfortunately, you may have discharged the battery to the point where it will no longer take a charge anymore - hence the 9 minute life.
litime.com/blogs/blogs/is-it-bad-to-fully-discharge-a-lithium-ion-battery#:~:text=It is generally not recommended,and reduce its overall lifespan.