The issue at hand here is the traction battery self-discharging.

I don't know what the final consensus was, but check out PriusChat for more info on how long people have been able to leave their car "in storage". If the traction battery runs low the car will not start. There is no traditional starter in this car. Your dealer will have to charge this one. (Unless you feel comfortable charging a 244 volt battery)

The traction battery is a NiMH battery. When the car is shut off, this battery is completely disconnected by relays. But all batteries will self-discharge over time. Your best bet is to have the battery as near full as possible before leaving it in storage.


The other battery in the car is a deep cycle AGM lead acid battery. This is the "12v" battery. It is in the right side of the trunk. If this battery runs down the car will not start either, but a normal jump start will fix this.

As far as the Camry on the lot that didn't start, someone probably left the dome light on. The self-discharge rate on a lead acid is pretty low. The car is not a lemon.