How Much Range Does an Electric Car Lose Each Year?

[kobayashiGT]

16 minutes ago, pi3142 said:

Besides heat, the degradation of battery could also be due to the build up of corrosion of the terminals and linkages of the packs in the battery. Or if the packs in the battery are charged in in parallel, the weakest pack would stop the entire charging earlier. If the system charge and monitor each pack separately, this would not happen. Thus a workshop visit for battery service offering the works above will give back some of the lost capacity.  

how does a battery servicing works?

[macrosszero]

Wear and tear has to be expected, ICE cars experience horsepower loss due to various components getting worn/choked etc. 

[pi3142]

20 hours ago, kobayashiGT said:

how does a battery servicing works?

The battery service should help to recover some of the lost capacity. The indvidual packs within the EV batteryare checked if some of the packs have much more capacity than others in the same EV battery, than the packs need to be balanced to get tehm around the same capacity. The checking of capacity is done by charging and discharguiing each pack separately with external chargers. And at least another round of charging  seperately to get them to around the same capacity. Then all packs are put back into the EV battery. Usually the packs in the centre would get hotter than the ones at the edges. So the ones in the centre change posistion to the side to even out the wear due to heat. 

When the packs are taken out, the linkages and connections are also cleaned (some use sand paper!) to get rid ofthe corrosion or oxidation that formed from copper linkages after a few years. Good contact rediuces heat generated.

If a pack is really bad snd need replacment, uusally it is to get pack that matches the capacity of the rest of packs. So likely it would be a good 2nd hand pack from a scrapped car of the same year. This could already be costed into the servicing. 

[kobayashiGT]

23 minutes ago, pi3142 said:

The battery service should help to recover some of the lost capacity. The indvidual packs within the EV batteryare checked if some of the packs have much more capacity than others in the same EV battery, than the packs need to be balanced to get tehm around the same capacity. The checking of capacity is done by charging and discharguiing each pack separately with external chargers. And at least another round of charging  seperately to get them to around the same capacity. Then all packs are put back into the EV battery. Usually the packs in the centre would get hotter than the ones at the edges. So the ones in the centre change posistion to the side to even out the wear due to heat. 

When the packs are taken out, the linkages and connections are also cleaned (some use sand paper!) to get rid ofthe corrosion or oxidation that formed from copper linkages after a few years. Good contact rediuces heat generated.

If a pack is really bad snd need replacment, uusally it is to get pack that matches the capacity of the rest of packs. So likely it would be a good 2nd hand pack from a scrapped car of the same year. This could already be costed into the servicing. 

woah. then sound like it is not an easy job. this servicing job will be expensive.