Jaguar I-Pace EV400 Forum banner

Make ipace charge only to 80%

7.2K views 17 replies 9 participants last post by  Ayepace  
#1 ·
I am in the US and own both an I-pace and a Tesla Model Y. The Y auto-regulates charging to whatever percentage I dictate. I cannot make the i-pace do the saem. I have read here that Jag forces a buffer so even if our charger and the car says 100%, it isn't. Is this accurate? I am concerned that i am ultimately damaging the battery by charging to 100%
 
#5 ·
Don't worry about filling it up to 100% on the Jag, by design you can't reach real 100%, as opposed to the Tesla , where Elon wants to use every single electron of the battery, so he put very little buffer (or no buffer at all ?) on the battery, and ask owner to manage the buffer themself.
 
#7 ·
Jaguar (as have many other EV makers) built in a buffer for the battery, so charging to 100% and discharging to 0% is not actually 100 and zero to the battery, so the battery never experiences those extremes. Tesla decided to leave that strategy to the owner and recommended 80% but gave you the option of using 100% when needed. Many of us still only charge to 80'ish %, but it is unclear if this is actually beneficial or just gives us a sense of control. Jaguar does not recommend limiting to 80% as they are confident maintaining their buffer is just as good and keeps the battery talk to a minimum since any talk of EV batteries increases the anxiety of potential customers who are considering switching to EVs, but are worried about long term battery life. Ideally, you want the EV to be as similar to an ICE car as possible to reduce the reluctance to switch.

In general, I think most people agree on the following general guidelines. When charging using a L2 charger (what we normally have at home), there is no hard reason to limit charing to 80% however if it is 6 of 1 and half a dozed of the other, there is no harm stopping at 80% and maybe, just maybe, you might be a little easier on the battery (but may be more for our sense of control than actual battery longevity) and Jag says it is perfectly fine to go to 100% all the time. If you charge using DC fast chargers all the time, then there is a stronger argument that going to 100% all the time might be harder on the battery and lead to faster degradation. Charging does slow down as you get to 100% (to protect the battery), so it is also unclear just how bad it is. It gets more expensive on many DC chargers to go to 100% since the charging slows after 80%, so there is a financial incentive to use the fast chargers more in their best efficiency range, which is below 80%.

It may not be the best idea of leaving your car sit at 100% for weeks or months at a time (I don't think there is any evidence that it is an actual issue, but in general batteries don't like sitting at 100% in long term storage), but for day to day use, there is no reason to worry about having your battery sit at 100% after charging before you drive your car.
 
#16 ·
There is more to the cost of the fix than the cost of one module. There are numerous bolts, seals, coolant, etc., involved plus labor. You would have to check for prices in your area.

This should be covered by the recall at no cost to you, or argue for coverage by 8 year/100000 mile warranty.