What a strange mistake - another 10 or 20Wh would amount to something like $10 or $20 on a per unit basis. Whatever you think about 8gb of RAM, that was pretty clearly necessary to hit the price point, but battery is an easy feature to provide cheaply if weight and bulk are secondary and you're working with an efficient SoC like the A18.

Throughout the article you have a typo calling the laptop Protege instead of Portege.