Is there a way to float the hybrid battery while left with no one to start it for a month or two. i have a 12v solar charger.
You might be able to cobble something together using your solar charger, an inverter, and one of the "grid charger" products available for the traction battery, assuming the capacities work out. Maybe with some kind of a timing or control scheme involved.
Aha... I took the word "float" literally. I see float charging the traction battery. I agree with @bisco. Don't need to float charge the traction battery, but yes the 12v battery will need it.
Yes... Though a truck driver on here once went more than year without using his old Prius and it started up just fine with no issue. Basically, what you need is 110v power supply switch on a timer or wifi so you can turn it on remotely... Then you need a high voltage super low amp charger... Hybrid Automotive and Maxx Volts make them. Or you can build your for $100ish: Build Hybrid Battery Maintenance Gear For Under $100 | PriusChat
I would not worry about it. I would Park it with it the High 3/4 full according to the gauge on the dash. Like others have said I would charge the 12 V with a trickle charger. Or the solar charger that you have.
