What is the life expectancy of this battery? In my experience in a non-hybrid vehicle the battery should last 3-5 years. Granted, the Prius 12V battery is only used to get the electronics on and enable the main battery to activate the engine so its load is small and short duration but how long before this battery should be changed out. But your Prius’ battery will only run optimally for so long, and it’s important to know the factors that can affect its lifespan. For starters, the distances you travel can affect your battery. If you frequently commute a long distance, your battery’s lifespan may begin to veer toward the lower end of that 8–10 year range. How Often Does a Toyota Prius Battery Need to Be Replaced? The Prius hybrid battery shouldn’t fail before the warranty ends. With this in mind, it should last a minimum of 100,000 miles, or eight to ten years. Still, you will probably need to replace the battery at some point during the hybrid car’s life. The good news is that long-lasting battery life is designed to last. The average battery life is about 150,000 miles or eight to ten years. Troubleshooting Common Issues with Your Prius Hybrid Battery. As with any vehicle component, the Prius hybrid battery can experience its fair share of issues. Here are some common problems and solutions: How long does a Toyota Prius battery last? According to Toyota, a Prius battery can last between 100,000 and 150,000 miles, or about 8 to 10 years. Of course, like with any vehicle, the lifespan of your battery will depend on factors like your driving habits and the frequency of servicing. Most hybrid and EV batteries are warranted for 8-10 years. Prius nickel hydride batteries are known to be practically problem free for that amount of time as well. Prius lithium ion batteries have not yet been around long enough to know for sure. I’d say if you’re the ultra cautious type, trade in the Prime after 10 years. Related article: How Long Do Toyota Prius Engines Last? So, just how reliable is a Prius; and, how easy is it to do repairs on a Prius? It's still going strong on original batteries at 270,000 Original owner of a 2008 with almost 200k miles. Replaced water pump well before 100k. No driving this spring did a number on the 12v battery which was an easy self-replace. Replacing headlights was a pain (last month). Replacing the combination meter the month before that was easier. The gas sensor/gage seems to be going out. Los Angeles, CA. Vehicle: 2008 Prius. Model: II. If you plan to keep the car for 5 more years, change the water pump now. It'll be a 1 time replacement. Any car with nearly 200k miles will need parts, this car isn't any different. #2 JC91006, Nov 27, 2020. You should also have access to customer support, in case of need. A reconditioned battery for hybrid car can make it last longer, even for up to 12 years. It may be possible to recondition your battery for more than once, which can further prolong its lifespan. There are several types of batteries which can be refurbished to live longer 1m8E1KK.