I bought my Prius 2005 in
I bought my Prius 2005 in 2016 with 67000km only. I thought the battery will fail soon because of low mileage but not happened. I worked in remote area oil gas leaving the car in garage many times for 1,2,3 or 4 months. The secret founded on Priuschat.com is to leave the battery fully charged before to leave it for long time. So always in Drive D, with both brakes on and acceleration on maximum. I always found the car how I left it. As a safety for the small battery I connected a solar panel 30x20cm (180mA) to compensate the loses. Just only because is time consuming to replace. I never image that will work so good. Even in the evening before to leave it in parking I always forced charging. It is excellent in the morning.