The 800Wh is $1,102 USD, weighs 8.3lbs, and is available starting in March 2024 The 725Wh is $1,018 USD, weighs 8.6lbs, and is available now For me, if I was buying the battery aftermarket then I would get the 800Wh unless I need it now since the 800Wh isn’t available until March.