dlb92 Posted September 9, 2016 at 02:34 PM Report Share Posted September 9, 2016 at 02:34 PM (edited) So my car has been in the shop for 3 days and counting. They are sending information to the engineers at Ford regarding my battery to see if it will be replaced. I have only 32,000 miles and I've been getting 4.0Kwh as measured by the system after driving for the last several weeks. First they said the cooling door was not opening so they fixed that. Now they have done a full decharge/recharge and they said they recorded 4.3Kwh to charge the battery from empty to full. Does anyone have any insight into what that means? If that is measured from the wall outlet that is really low isn't it considering efficiency loss? Does anyone know if they measure it from the wall or the battery side? Edited September 9, 2016 at 02:34 PM by dlb92 Quote Link to comment Share on other sites More sharing options...
jeff_h Posted September 9, 2016 at 02:40 PM Report Share Posted September 9, 2016 at 02:40 PM My guess is that you expended 4.0kWh for your driving, and it took 4.3kWh to recharge it since there is a normal loss of efficiency in charging any battery, but I don't know what the normal expected loss rate is. Quote Link to comment Share on other sites More sharing options...
dlb92 Posted September 9, 2016 at 03:04 PM Author Report Share Posted September 9, 2016 at 03:04 PM (edited) My guess is that you expended 4.0kWh for your driving, and it took 4.3kWh to recharge it since there is a normal loss of efficiency in charging any battery, but I don't know what the normal expected loss rate is.I looked back at old threads and an empty battery takes 8kwh to recharge considering a 72% efficiency loss. Edited September 9, 2016 at 03:04 PM by dlb92 Quote Link to comment Share on other sites More sharing options...
bdginmo Posted September 9, 2016 at 09:57 PM Report Share Posted September 9, 2016 at 09:57 PM If it's an EV certified dealer they'd probably charge at 240v which would be ~82% efficient. Quote Link to comment Share on other sites More sharing options...
dlb92 Posted September 9, 2016 at 10:35 PM Author Report Share Posted September 9, 2016 at 10:35 PM (edited) If it's an EV certified dealer they'd probably charge at 240v which would be ~82% efficient.So if they reported 4.3kwh then that would be 3.526 actual kwh it took to fully charge the battery from empty? ähm.. Edited September 9, 2016 at 10:35 PM by dlb92 Quote Link to comment Share on other sites More sharing options...
jeff_h Posted September 10, 2016 at 12:24 AM Report Share Posted September 10, 2016 at 12:24 AM So if they reported 4.3kwh then that would be 3.526 actual kwh it took to fully charge the battery from empty? Yeah you've got a good point, at either efficiency level there has been a lot of capacity dropoff... Quote Link to comment Share on other sites More sharing options...
bdginmo Posted September 10, 2016 at 01:17 AM Report Share Posted September 10, 2016 at 01:17 AM So if they reported 4.3kwh then that would be 3.526 actual kwh it took to fully charge the battery from empty? ähm.. It depends on how they arrived at 4.3. Was that the amount pulled from the wall or the amount the battery accepted? Quote Link to comment Share on other sites More sharing options...
dlb92 Posted September 10, 2016 at 02:53 AM Author Report Share Posted September 10, 2016 at 02:53 AM Yes, they didn't explain and I didn't have a chance to ask. Quote Link to comment Share on other sites More sharing options...
dlb92 Posted September 20, 2016 at 09:09 PM Author Report Share Posted September 20, 2016 at 09:09 PM (edited) So after a 3 week journey, here is Ford's joke of a response to 33% battery degradation after 32,500 miles / 3 years. (I charge once a day and keep battery half full for 10 hours out of the day, but I live in Florida where it is always hot. My average speed for the last 3 years has been a painful 45mph, all for nothing). Keep an eye on this forum and the cmaxenergiforum as there may be some class action litigation going on in the future for those of you with high voltage battery issues. Edited September 20, 2016 at 09:16 PM by dlb92 comike 1 Quote Link to comment Share on other sites More sharing options...
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