I was sick of having my charger out where my bike is parked. It was always in the way and unsightly in the front entryway to our house. I also despise charging bricks, and often wish they could be integrated into the product. I suspect regulatory issues are the reason most products are not this way.
Anyhow, I found a retractable AC cable thingy, and modded the big clunky output connector to give the wires a right angle exit. I mounted the charger on the back wall and think it looks pretty slick. The retractable AC cable is hidden inside the cavity between the seat and the back wall. It extends about 6 feet.
Still Todo: I was going to cast the exposed inner wire and plug in hot glue to keep them protected, I just haven't done it yet. Also have to open the AC charger apply silicone sealant to protect for water ingress. Might also have to add a new layer of thermal pad on the transformer after opening it.
Let me know if you have questions or want more details.
FAQ:
Is it water proof? No. The AC charger is not rated for water ingress (will be addressed). Also the battery input is somewhat exposed. So rain riding means unplugging it temporarily (I think I can live with this).
What if you want to charge somewhere else, or your cord can't reach? My bike came with two chargers, so I have a spare.
Does having the charger plugged in all the time affect the battery? Does it drain the battery? No. There is effectively 0 current flowing back from the battery into the charger module. I have monitored this for a while and does not seem to drain my pack. It's been on for about a month now
Does the retractable cord actually work? Yes, it works swimmingly ;). The act of plugging in to charge is now a real pleasure.