Hybrid batteries typically last roughly 8 years or 100,000 miles, according to CarDirect.com. Some models, such as the Toyota Prius model, have lasted up to 180,000 miles in lab testing.
Warranties vary between hybrid manufacturers; Toyota typically guarantees 100,000 miles on the Prius battery pack, while Honda and Ford provide an 8-year and 80,000-mile warranty. Hybrid batteries are typically only replaced when they no longer properly charge or malfunction. A certified mechanic should change hybrid batteries to ensure proper disposal and prevent toxic material leakage. Proper maintenance and keeping the battery at the maximum charge significantly increases the life range of the battery.