vs
Battery OEM BMW or OEM Volvo
I set off to test the X5 battery to see if degradation was better or worse than my iPhone's 10% degradation over one year. We've driven 29,996 miles, 15,296.5 electric. My best all-electric range achieved was about 41 miles when new. After one year, I achieved exactly 41 all-electric miles from a full charge in ideal conditions. Zero percent degradation as measured by this test. It appears temperature and AC/heat use have much greater impacts on range than actual battery health at this stage. Results look better than expected for long term ownership and residual value.
Pros: zero degradation, better than expected
Cons: range affected by temperature
Vehicle:
BMW X5
Mileage: 48275 km
I got 14 years out of the battery in my Volvo.
Pros: long lifespan
Vehicle:
Volvo
For about a month I have owned a 2016 REx whose 60 Ah battery is supposed to get 72 miles. This week I fully charged it and have been commuting four four days without topping up. Today the REx kicked in with the trip meter at 73.3 miles. This was a mixture of city traffic jams and short bursts on the carriageway, mostly with the air con on and mostly in Comfort mode. So I'm pretty pleased.
Pros: good range, satisfactory performance
Vehicle:
BMW
I am still on my original battery in my 2007 335i w/ 87k miles.
Pros: original battery, 87k miles
Vehicle:
BMW
Mileage: 139200 km
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