Batman:
so i get to babysit a friend's leaf during school holidays.
he doesn't know much about it other than charge it and drive it, so i thought i'd ask here
Gen 2 24kwh
i plug the leafspy app and it says SOH 60.x%
when the battery is 10% leafspy says there'a 20% capacity remaining
* does that mean the car will still move when it gets to 0% since that means it will still have just over 10% actual capacity or is that a reserve that the car won't use. i have no way of finding that out without a friend with a flatbed tow truck
LeafSpy tells you the "real" state of charge. However the Leaf reserves some capacity so that you don't destroy the batteries by completely discharging them. Thus, 0% (as far as the Leaf is concerned) is when it will turn itself off, even if LeafSpy says it might have 10% left.
State of charge is different to SOH (state of health). SOH means that the effective capacity of the battery is reduced to 60% - i.e. instead of 24kWh you have around 14kWh total (and again, that 24kWh is less in practice anyway because of the reserved charge amount).