Are you talking about the Model Y battery? I think it is currently 75Kwh and gets 326 miles range on AWD. The Model 3 for 2021 has the 82Kwh battery and get 353 miles range.Official EPA estimates have been posted, and from those It appears to have a useable capacity 88 kWh. EPA range is 315 miles and efficiency is 28 kWh/100 miles, or 3.57 m/kWh. Do the math and you get 88. So how much bigger than that do you think the battery is?