You're failing to mention 99% of those Dell laptops have REMOVABLE batteries which is why they're smaller. If the battery runs out you could have multiple char

You're failing to mention 99% of those Dell laptops have REMOVABLE batteries which is why they're smaller. If the battery runs out you could have multiple charged ones in your bag, which is what we all did when we knew we'd be stuck in a datacenter for a full day. If your battery runs out on the macbook, you're just done.