Just look for the new 800wh battery, it is the same size as old 400wh batteries which is crazy.
I guess Giant will start to specs these on 2023 bikes such as the new Trance X E+ that was stuck with the 625wh...bike is going to be killer with the new 800wh.
• Compatible older model bikes require an additional cover to accommodate the EnergyPak Smart 800.
• MY22+ Trance/adv E and Reign E models are compatible using original covers.
Usually prefer to read forums rather than be active. So not trying to spam, just thought this could be helpful.
I'm on a Stance E+0 2021 with some upgrades.
Like jaggysnake I bought the 800 wh from the above mentioned merchant. Got it yesterday. Delivery took about 2 days from Germany to Sweden.
I've forgotten my keys to the lock at a clients office, so will not be able to put it on the bike until next week. No issues with charging on existing gear though. The cover, model b, supplied from the same merchant is a matte black plastic.