Thanks for the quick reply. Concerning the battery, I think it would help to just increase the capacity from 4 to 6. For recharging keep the hotel to fully recharge and the alley for partly recharging with the risk of someone stealing part of your money. And then you could add a "quickcharge" function (4 points for 10 credits, no risk) to one of the shops or the bar. If you add a quickcharge option the alley can stay at 2 points as a "last resort", else make the alley 3 or 4.
For the not yet implemented content, I know this is work in progress and you can't do everything at once :)
If there is a way to help, I'd be willing to spend some time for it. Haven't worked with RenPy yet but I do have some experience using Python.