"I like to remind people that they really do not have to worry about their electric-vehicle batteries. The vast, vast majority of all batteries survive until the car is crashed, mechanically totaled or travels over 300,000 miles. A small subset has inadequate cooling or bad battery management and degrades by that point. And a few have manufacturing defects, which almost always will require in-warranty replacements."
"File this Hyundai Ioniq 5 in that last category. A small subset of early-production 2025 Ioniq 5sthe first models built in North America, with the North American Charging System (NACS) plugs"may experience a charging issue where a voltage difference between battery cells prevents the High Voltage Battery from fully charging," a technical service bulletin filed with the National Highway Traffic Administration reads. The solution: Replace the battery."
Most electric-vehicle batteries last until the car is crashed, mechanically totaled, or exceeds 300,000 miles. A minority degrade earlier due to inadequate cooling or poor battery management, while a few suffer manufacturing defects that typically need in-warranty replacement. Early-production 2025 Hyundai Ioniq 5 models built in North America with NACS plugs can experience a voltage differential between cells that prevents the high-voltage battery from fully charging. Affected cars may show declining peak charging rates, reduced fast-charging ability, eventual loss of fast charging, and battery failure despite Level 2 charging working temporarily.
Read at insideevs.com
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