The 12V battery losing charge seems to have been relatively consistent. It is possible this could be a result of the HV cable issue attracting more attention/ being blamed for issues with the hybrid battery. It is also very possible that the hybrid battery and 12V battery inexplicably draining and the HV cable issue are problems that are linked While hybrid cars entered the mainstream car market nearly 20 years ago, they’ve grown in popularity and spread across nearly every platform of vehicle today. As the 10- and 15-year marks of ownership are reached, hybrid battery life and maintenance questions have begun to pop up. How long do batteries last? The bottom line here is that if it’s properly cared for, an electric car’s battery pack should last for well in excess of 100,000 miles before its range becomes restricted. Consumer Reports estimates the average EV battery pack’s lifespan to be at around 200,000 miles, which is nearly 17 years of use if driven 12,000 miles per year. My nephew bought a brand new Honda Civic hybrid that the battery died within the warranty period and was replaced. He then continue to drive the vehicle and by the time he had hit 150,000 miles which commuting an hour each day into San Francisco didn’t take too long, the battery had died a second time this time outside of warranty. 2. How Long Does Toyota Highlander Hybrid Battery Last? Image Credit: greenbeanbattery. Most Toyota hybrid batteries have an average lifespan of three to five years. However, factors like extreme temperatures, battery size, weather conditions, and driving habits influence how long these high-voltage batteries will last. Lack of use is detrimental to your hybrid battery lifespan. The car has low miles because it was being driven less than 6,000 miles a year. For 12 years. Then it was left sitting for 4-6 months without being charged. It is not surprising nor a dealer scam that the battery was rated incredibly weak by toyota after the red triangle and replaced. Most hybrid batteries have an eight-year or 100,000-mile warranty, according to Bumblebee Batteries, but some fail before that time. A hybrid vehicle cannot run without the hybrid battery, so 2018 Model 3, dual motor, (310 mile battery) FSD Beta, HW3, 144.4K miles. Battery = 273 Miles at 100% based on App and Tesla screen. Haven't done the drain and fill routine. Home wall charger, 90% of the time, Supercharge when traveling. Charge at home with the wall charger into the 80% range. Charge to 100% when needed. I have a Rav4 hybrid, it is supposed to turn off after 1 hour. From the manual, The hybrid system will automatically shut off after approximately 1hour if it has been left running while the shift lever is in P. 1. r/Toyota. The RAV4 Hybrid is EPA rated at 41 mpg city/38 mpg highway, which is even more impressive. But the RAV4 Prime, thanks to its plug-in technology (and 18.1 kWh battery) that allows the vehicle to ChGCJ.