I stand corrected now that I have seen the full picture on a computer and not my phone.
I wonder how they are going to prevent the cells from dropping under 3 volt before they take on damage.
If you own one I would recommend never letting it die all the way. And keep about half charge on it if you are going to not use it for a while. These batteries are great but temperature affects them a lot.
Store at room temp. I would not leave it in your car on a hot summer day or a cold winter.
You mention that the ipad has 2 3.7 volt li-poly batteries. Other wise know as li-po.
Li-po as I know it is still fairly unstable and if the voltage per cell drops to low it can cause damage to the cell.
I rac RC with li-po and have seen them catch on fire.
But looking at the pictures I beleive it's printed on the battery case as li-Ion.
Maybe a miss print in step 22? Maybe it should say Li-Ion?
Don't get me wrong, it will be a great day when Li-Po is more stable for electronics.
Ipad usage could be 20 hours insted of 10.