It's not clearly mentioned in the sticker for the Lariat. However, it's included in the 511A Package. Which trim did you buy?
Lariat:
As posted above, the easiest place is to check the range. If it shows an EPA combined city/hwy range of 320 miles, you have the ER battery.
An SR battery will show a 230 mile range:
While the Platinums all come with the ER battery, they show a lower, 300-mile range:
Lariat:
As posted above, the easiest place is to check the range. If it shows an EPA combined city/hwy range of 320 miles, you have the ER battery.
An SR battery will show a 230 mile range:
While the Platinums all come with the ER battery, they show a lower, 300-mile range: