L2 Charging Level Not as High as L1?

[mkochmo]

We've had our Mach E ER AWD for about 2 months now, and up until this past weekend, we've gotten along with L1 charging at home. We bit the bullet and had a 50A dedicated line/outlet installed to our garage (delivers 40A) and when we used it for first time this weekend, while we were impressed with getting 9.6KW delivery to vehicle and fast charging, we noticed the mileage at 100% was less than what we were getting with our L1 at 100% - like 310 miles on L1 vs 284 miles on L2. All other factors remained the same - temperature, max charge level settings, etc. The only difference was the L1 (Ford Mobile Charger) vs L2 (Emporia L2 Charger) results at 100%. I'm new to this EV game, so posting to see any insights/thoughts? Does L2 max out at a lower 100% charge mileage level due to the dynamics/physics? Or will the L2 charging improve to the prior L1 100% mileage level?

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[kdonnel]

It got cooler outside. What we think as still warm the battery finds chilly.

As winter approaches your range will drop.

 

[Mach1E]

Coincidence, definitely not a cause.

1 good thing about L2 vs L1 charging though (not measured by your GOM range shown in the vehicle) is that it’s more efficient charging this way.

It’s not just faster, a higher % of the energy makes it into your battery with less waste.

 

[ReverendPete]

The range figures are just an estimate, since a lot of factors come into play, like temperature (outside temperature, battery temperature), power usage for climate control, average speed, terrain features, driving aggressiveness, etc. I have started thinking about it more like an ICE vehicle. Treat the blue gauge as if it were your fuel gauge, and treat the miles figure as an estimate of about how far you can go before needing a charge. Many ICE cars will give you range estimates, too. But I always intuitively treated range estimates in my ICE cars as approximate. It's just that the MME makes that number very prominent on the screen, which makes you think it's more than just an educated guess... (To be fair, I have found the MME's estimates to be pretty accurate. Your car knows the weather forecast, knows your current settings, and knows your driving habits)

 

[mkochmo]

Thanks all - I will continue to monitor my L2 charges (now that I have L2 I dont plan to charge more than once a week, so temps will definitely factor in as it continues to get cooler). Suspecting that outside temps must be part of it for sure, although they haven't changedd much over past few weeks.

 

[Kevin P]

Your battery health will be better long-term if you charge to a maximum of 80-90% and don't run it down below 15% or so. Charging to 100% and running it nearly dry will cause greater capacity loss over time. Depending on how long you plan to keep the car, you may or may not care.

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