A comprehensive analysis of over 10,000 electric vehicles reveals that battery degradation is a slow process, with most power packs capable of lasting 20 years and retaining a majority of their original range.
As another said, That is very specific, can’t say I’ve heard of that before, but not a Prius connoisseur, However is right regardless when it comes to ICE engines (internal combustion engine).
An engines efficiency goes down over time, there is a lot of mechanical movement and a lot of its components decay overtimes, bearings, piston rings, springs, valves, gaskets, just everything in the engine is not a “lifetime” part. In 20 years, if you on average drive 2 hours a day, 5 days a week at 2,000rpm, just 1 piston has done 41,600,000 strokes, crankshaft has spun 20,800,000 rotations, Camshaft has spun 10,400,000 rotations as has the intake and exhaust cam opened/closed, fuel has been injected into the engine and exploded. It comes at a cost that would honestly be similar to the lost of charge in an EV battery, however the EV battery will lose its charge at a same rate even if “neglected”. An engines overall efficiency over time also correlates to the maintanace you put in. Late in a oil service can cause problems causing poor efficiency, as can using the wrong oil, or using the wrong octane/cetane rating fuel/diesel, poor engine cooling, etc, a lot of maintenance is required, and you’ll still have poor efficiency after 20 years, at least with a battery, as long as you aren’t constantly discharging it completely then filling it, and it is being cooled correctly, it should consistently lose its charge over time.
As another said, That is very specific, can’t say I’ve heard of that before, but not a Prius connoisseur, However is right regardless when it comes to ICE engines (internal combustion engine). An engines efficiency goes down over time, there is a lot of mechanical movement and a lot of its components decay overtimes, bearings, piston rings, springs, valves, gaskets, just everything in the engine is not a “lifetime” part. In 20 years, if you on average drive 2 hours a day, 5 days a week at 2,000rpm, just 1 piston has done 41,600,000 strokes, crankshaft has spun 20,800,000 rotations, Camshaft has spun 10,400,000 rotations as has the intake and exhaust cam opened/closed, fuel has been injected into the engine and exploded. It comes at a cost that would honestly be similar to the lost of charge in an EV battery, however the EV battery will lose its charge at a same rate even if “neglected”. An engines overall efficiency over time also correlates to the maintanace you put in. Late in a oil service can cause problems causing poor efficiency, as can using the wrong oil, or using the wrong octane/cetane rating fuel/diesel, poor engine cooling, etc, a lot of maintenance is required, and you’ll still have poor efficiency after 20 years, at least with a battery, as long as you aren’t constantly discharging it completely then filling it, and it is being cooled correctly, it should consistently lose its charge over time.