Almost there!

Needed to take a break from this for a few days, was getting
frustrating.  I think I almost have it, I'm just missing one value for
line 7304.  Got rid of adding the hotplate to inventory, and I think I
fixed the code for refunding the remaining charges to the battery.  I
think I'm literally 5 letters away from this working, can anyone tell me
what the last line needs to be?