Did a deep discharge and a grid charge on Turtle (Dr. Horrible) this weekend.
All went well, and so far so good, battery seems to be holding strong. Voltage topped out at 168 this time, whereas it had gone all the way to like 174 back in the day. Not sure what that means! Hopefully the process will have a positive effect, if so I will we doing the same thing on Ron Burgundy next weekend.