Question Chuwi CWI509 original battery capacity

[sammin]

Hello everyone, I found the Chuwi CWI509 laptop battery on AliExpress. The part number and capacity are HW-31130148 4000mAh 30.4WH. I want to ask if this is the original battery capacity?

 

[helpstar]

The original one is 26Wh
https://www.notebookcheck.net/Chuwi-UBook-CWI509-Tablet-Review-The-Surface-Go-Wannabe.448816.0.html

 

[xiaomei106]

If other parameters of this battery match yours, then you can put it on your laptop. The higher the capacity, the more durable the battery.