Batteries Naturally Lose Their Voltage over Time, Even When the Vehicle Is Not in Use – This Is Especially True for Older Cars (With Older Hybrid Batteries)...
Batteries naturally lose their voltage over time, even when the vehicle is not in use – this is especially true for older cars (with older hybrid batteries). Your best bet is to drive your Prius, Camry Hybrid, or other hybrid vehicles at least twice a week for at least 10 miles on each drive.
What causes hybrid batteries to fail?
When installed and used regularly on a healthy hybrid battery, a hybrid battery charger will significantly delay the degradation of the hybrid battery cells. This battery erosion is what leads to failed battery packs and hybrid battery replacement.
As with any other components of your car, many factors affect the life span of your hybrid battery. The way you drive, your maintenance routine, how you charge the battery, and even where you live can all have an effect.