Battery-only EVs have a much simpler drive train, and longer-lasting batteries.
Hybrids are not simply EV+ICE, they have very different kind of batteries (low-voltage, high C-rate).
In a hybrid, you have a battery that is 1/10th of the size, so the battery works 10x harder – needs to discharge at higher rate to move the car by itself, and usually there's no room for proper cooling of the battery.
In a BEV you have 10x more modules working at 1/10th of that rate, and there's battery management system keeping it at optimal temperature.
Batteries live longer when they're kept in 20-80% state of charge, and don't like to be cycled deeply. Small hybrid batteries get charged and discharged fully quite regularly, while the same distance needs only 10% of BEVs battery.
Hybrids are not simply EV+ICE, they have very different kind of batteries (low-voltage, high C-rate).
In a hybrid, you have a battery that is 1/10th of the size, so the battery works 10x harder – needs to discharge at higher rate to move the car by itself, and usually there's no room for proper cooling of the battery.
In a BEV you have 10x more modules working at 1/10th of that rate, and there's battery management system keeping it at optimal temperature.
Batteries live longer when they're kept in 20-80% state of charge, and don't like to be cycled deeply. Small hybrid batteries get charged and discharged fully quite regularly, while the same distance needs only 10% of BEVs battery.