An electric vehicle owner has drawn attention online after sharing unexpected results from years of charging habits that go against common battery advice.
Posting in the r/F150Lightning community, the owner explained that they had been charging their truck at 38 amps to 100% every night for more than two years. In many cases, the vehicle would reach a full charge within a few hours and then remain at 100% for the rest of the night. On some days when the truck wasn’t driven, the battery reportedly stayed fully charged for extended periods — a practice typically discouraged by EV experts.
Conventional guidance suggests that regularly keeping lithium-ion batteries at 100% can accelerate degradation. Prolonged high states of charge may increase stress inside battery cells and, over time, contribute to issues such as lithium plating or dendrite formation, which can reduce capacity.
Despite ignoring that advice, the owner said a recent dealership battery health test showed no measurable degradation. According to the test results, the battery still indicated 100% health after more than two years of daily full charging.
The experience has fueled discussion among other F-150 Lightning owners, many of whom pointed to Ford’s battery management system. Modern EVs often include built-in software buffers that prevent drivers from accessing the battery’s true maximum and minimum capacity. This means that when the dashboard displays 100%, the battery may not actually be at its absolute chemical limit, helping to reduce wear. Similar buffers exist at the lower end of the charge range to prevent deep discharge damage.
The results have added to broader conversations about EV durability and long-term ownership costs. Electric vehicles generally require less routine maintenance than gasoline-powered vehicles because they have fewer moving parts and no engine oil changes. They are also typically less expensive to fuel and produce no tailpipe emissions, contributing to improved local air quality.
While individual experiences can vary depending on driving patterns, climate, and charging habits, the post highlights how advancements in battery engineering and management systems may offer more flexibility than earlier EV guidance suggested.
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