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I went on a long distance trip started with 98% charge and ended with literally 2 miles left on the battery. When I went into the 'trips' tab it showed I had consumed 52 kW of energy. I have a 2017 75D with 104,000 miles and 209 miles on 100% charge. Based on the 209 mile figure that would be a 87% degradation (compared to 239 mile brand new). However based on the kW figure that'd be a 70% degradation... Which is a big difference. Thoughts? Think this is heavy degradation? Think I should contact service center for a new battery?