Make vehicle battery capacity adjustable

🚧 THIS IS A TICKET MIGRATED FROM UPVOTY. The original ticket and comments will be available for a limited time over at:
https://abrp.upvoty.com/b/request-a-feature/make-vehicle-battery-capacity-adjustable/
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My Kona EV seems to have around 72 or 73 kWh even though Hyundai and ABRP says it is 64 kWh. Discharging and charging rates and durations both indicate capacity is higher. Vehicle configuration in ABRP allows for degraded capacity, but not capacity above rating cannot be entered.