I have a 2005 Prius. After only a couple of weeks of being out of town, the system will not start. I read the instructions for jump starting the system using the exclusive jump starting terminal. My only problem was that my jumper cable clamp was too large to access the terminal and jump start the battery with my other car as the booster. So I've attached my trickle charger which has a smaller clamp to the exclusive jump starting terminal and set the charger at 12 volts. Do any of you know if there is any special concerns about using a trickle charger on the Prius? Should I leave it set at 12 volts overnight or turn it down to 2 volts as I would normally do for a standard battery?