Slow vs fast charging question
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Junior Member
Joined: May 2021
Posts: 13
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Slow vs fast charging question
Dear forum,
I'm still new to BEVs, just purchased a 2020 HSE, coming from a hybrid Lexus GS. I understand that for battery longevity the general recommendation is to charge between 20% to 80% - however, regardless of the overall charging time and if I'll need to choose, what would degrade the battery less:
Slow charger (e.g. 7 or up to 22 kWh) between 20% to 100%
or
Fast charger (e.g. 50 kWh) between 20% to 80%?
Thank you!
I'm still new to BEVs, just purchased a 2020 HSE, coming from a hybrid Lexus GS. I understand that for battery longevity the general recommendation is to charge between 20% to 80% - however, regardless of the overall charging time and if I'll need to choose, what would degrade the battery less:
Slow charger (e.g. 7 or up to 22 kWh) between 20% to 100%
or
Fast charger (e.g. 50 kWh) between 20% to 80%?
Thank you!
Veteran Member
Joined: Aug 2018
Posts: 2,260
Likes: 932
From: Exit 30 in NorthWest NJ
Following.
My gut instinct is that slower charging would reduce battery heat that could eventually shorten the battery life.
Is there a switchable way to limit charging to 80% on either type of charger? (I'm reminded of the kid down the street whose electric skateboard caught fire after he left it plugged in.)
My gut instinct is that slower charging would reduce battery heat that could eventually shorten the battery life.
Is there a switchable way to limit charging to 80% on either type of charger? (I'm reminded of the kid down the street whose electric skateboard caught fire after he left it plugged in.)
Senior Member
Joined: May 2008
Posts: 735
Likes: 120
From: Orange County, CA
I would not worry about battery longevity. The batteries in Teslas don't degrade much even when fast charged most of the time.
The battery pack contains 36 separate modules that can be serviced individually, so even in the unlikely event you experience a bad cell, only that module can be replaced.
The 2020 model only takes 7kW AC charge (11kW for 2021+). I think the expectation is that you would charge at home most of the time.
As carbuff2 said, there is no way to set limit for charging in the car (unlike Tesla). I can fiddle with my home charger and put an artificial limit, but it is clunky - it just cuts the power off after that many kW. Also at the end of each charging cycle the car performs some battery cell power balancing routine. Not sure if it is a good idea to skip that, by cutting power early.
Compared to German cars the fast charging curve of the i-pace is quite mild, suggesting they are not pushing the battery too hard, to ensure long life.
From reading other forums, the biggest issue with the i-pace is finding a competent Jaguar service center. Not all dealers know what to do with these electric cars and some people have had their cars stuck in the shop for months. It would be best if you have a few dealers in close driving range so you can choose the one that performs the best. Servicing these cars is a whole new training for the technicians and if there are not many sold around, it is not worth their time and $$$.
The battery pack contains 36 separate modules that can be serviced individually, so even in the unlikely event you experience a bad cell, only that module can be replaced.
The 2020 model only takes 7kW AC charge (11kW for 2021+). I think the expectation is that you would charge at home most of the time.
As carbuff2 said, there is no way to set limit for charging in the car (unlike Tesla). I can fiddle with my home charger and put an artificial limit, but it is clunky - it just cuts the power off after that many kW. Also at the end of each charging cycle the car performs some battery cell power balancing routine. Not sure if it is a good idea to skip that, by cutting power early.
Compared to German cars the fast charging curve of the i-pace is quite mild, suggesting they are not pushing the battery too hard, to ensure long life.
From reading other forums, the biggest issue with the i-pace is finding a competent Jaguar service center. Not all dealers know what to do with these electric cars and some people have had their cars stuck in the shop for months. It would be best if you have a few dealers in close driving range so you can choose the one that performs the best. Servicing these cars is a whole new training for the technicians and if there are not many sold around, it is not worth their time and $$$.
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