What will it take to consider a device repairable? Will it count if a laptop has 1 or 2 parts that can be user replaced? (Like swapping a keyboard key cap...)

What if they have two tiers of a device class. Where the base tier has 4 nearly identical models with different skus that are repairable, and a premium tier with 1 sku that is not repairable. Does that count as 80%?