Better battery for laptop 13

Does anyone know if there a better battery for the laptop 13, like 80Wh or so (like the laptop 16 but for the 13) ?

I guess the answer is pretty simple: if there were batteries with the same volume and dimensions but higher energy density, Framework would certainly ship those.

If you would like to fit the battery inside the chassis, the ones you get from Framework are your options.

If you can live with it being external, you can get one of the many large power banks with 100Wh and USB-C charging.