How Long Does Toyota Prius Battery Last. Things that shorten 12v battery life are. I read somewhere that the Prius battery was designed to last the life of the vehicle which was 250000 miles.
From personal experience and from research if you live in a warm humid climate I live in the Southeastern United States and park your Prius outside of the garage you can expect to have the HV battery fail after about 8 years regardless of mileage. Because Prius hybrids are still relatively new cars there is only a small sample size concerning how long a Toyota Prius hybrid battery will last. Hence the long warranty in California.
In places with high temperatures and lots of elevation change the life can be short enough to require replacement under warranty.
Toyota Prius batteries last about 12 years though the length of time will vary depending on how often they are used and their cycles. This good news for used Prius buyers since the Prius has one of the highest. There are Prius out there with battery packs old enough to vote. But you will need to follow up on maintenance to get these lofty miles.
