Displayed efficiency versus actual

[ASub]

My Lucid Air battery is losing nearly 30% more than distance driven. I bought it in August and have driven just over 2,000 miles. Why is this happening and what can i do to get better mileage.

 

[Amster]

There are also ways to do this using Home Assistant. For example, a bunch of us have set it up to get a rolling average of the last 15 minutes’ efficiency, and then provide an estimated range based on that.

It would be great if we had access to whatever algorithm they’re using for range on arrival, because that is extremely accurate.

You're right. The range on arrival is spot on. Using that for battery range would be much more accurate than what is displayed now.

 

[Bobby]

Even if it just gave a good estimate of kw-hr remaining in the battery and I'd be good. I know my efficiency and how much reserve I'd like. I'm good at quick in-the-head calculations but multiplying %battery remaining by battery capacity by efficiency is too much for me while driving. If it told me 38 kw-hr remain I'd multiply 30 by 3.6 for 108 mile (summer) or by 3.2 for 96 miles (winter), leaving an 8 kw-hr buffer.

Not too hard: my battery is 112kW so I use 100kW to allow for a buffer/degradation. So, multiply efficiency times 100 and that's miles remaining. Example: 3.4m/kWh x 100 = 340 miles.

 

[DeaneG]

...It would be great if we had access to whatever algorithm they’re using for range on arrival, because that is extremely accurate.

Two different things though: estimating efficiency over a predetermined route vs over an unknown future path.

 

[borski]

Two different things though: estimating efficiency over a predetermined route vs over an unknown future path.

True. But there are other methods, like our 15-min running average.