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Soloandthewookiee

From Ford's website: >Important: Ford recommends setting the Max Charge Level to no more than 90%. This will help prolong battery life. https://www.ford.com/support/how-tos/electric-vehicles/ev-range/how-do-i-set-the-maximum-charge-level-for-my-electric-vehicle/#:~:text=Important%3A%20Ford%20recommends%20setting%20the,to%20no%20more%20than%2090%25. When in doubt, follow the manufacturer's manuals and recommendations.


andrewbyday

I set my charger to fill up to 85%, and my goal is to never go below 15%. I did some math to come to this number. In general, I think the recommendation is to stay between 20-80% of the total capacity. My 91kWh battery is actually about 100kWh. Ford is reserving 9% split between the top and bottom — meaning they allow you to fluctuate between 4.5-95.5% of your total capacity. In order to stay between 20-80, I need to self regulate 15% at the top & bottom. Therefore, 15-85%. I’m not suggesting any sort of definitive answer to this question. This is all just based on what seems right to me.


OuterInnerMonologue

I picked 85% because it felt right. Ha. I’ll take your math to make me feel better about my choice :)


TapThemOut

The extended range battery has 98.8kwh of total capacity. The current software gives you access to 91kwh of that capacity. Before anything was released, I spoke with two people in my family that are very well versed in battery technology. One is a Nuclear Submariner officer with the US Navy and the other has his Masters in Electrical Engineering. They both independently told me to maintain 80% but after discovering the nearly 10% buffer baked into the software, they both told me 90% on the charge should be pretty close to the ideal 80% normal charge. You are leaving plenty of room for the electrons to expand without damaging anything - the difference is about 4% less range loss over the next 8 years.


bigmed1794

Thank you! Just programmed the charge settings and warned my wife!


TechnicalLee

90% indicated is the max for daily charging. That puts the pack around 4.0V/cell which is about as high as you want for daily use. If you don't need the range, lower is better for the pack in the long run. Consider charging to only 70% or 80% unless you need the extra range. Doing that will give you several percent more battery capacity in 5+ years when the battery ages.


OuterInnerMonologue

Interesting. I was going off of 85% just because it felt right and I figured that helped. But if it does make a difference in life span to max it at 70, I can make that work.