Not all electric vehicle batteries are necessarily lead-acid batteries. Large and medium-sized electric vehicles generally use lithium batteries. Small electric vehicles, such as older scooters, mainly use maintenance-type lead-acid batteries. maintenance-free lead acid batteries, colloidal lead batteries, and only a few are lithium batteries.
If you think there is no difference between solar cells and electric vehicle batteries, you are just a layman.
Also, even though solar batteries and electric vehicle batteries are both lead-acid batteries, they are still different. Lead-acid solar batteries require deep discharge and extremely high life requirements, so lead-acid batteries are commonly used; while lead acid batteries in vehiclesElectric batteries do not require deep cycling and long life, but high current discharge characteristics, so maintenance-free lead-acid batteries are commonly used, maintain lead-acid batteries with the addition of water.