It doesn’t come as a configuration on the BAT regular, but the BAT Reverse is 150lbs limbs as standard.
However, if you already bought BAT regular and doesn’t want to purchase the Reverse, you can switch the limbs with the following:
Limbs (select 150lbs from the dropdown): https://ballista.co/product/limbs-for-ballista-bat/
Replacement tool: https://ballista.co/product/string-replacement-tool-for-ballista-bat/
Tutorial (Replacing limbs on Ballista BAT Pistol Crossbow):
We don’t usually recommend it, because it’s better to use the more powerful Reverse with higher draw weight (lbs) limbs for the crossbow function and buying Reverse is cheaper than buying BAT + replacement tool + 150lbs limbs.
But this is an option if you already bought the BAT.