Charging Lith Ion battery using Lipo Rider Plus (Charger/Booster) - 5V/2.4A USB Type C

Hi, I am a complete novice to electronics and just trying to help my daughter with a project.

Would anyone please be able to help?

We have connected a LiOn battery to the battery port on the LIpo Rider Plus charger/booster and are trying to charge the battery using full-function header connections, but the battery is not charging.

Does anyone know if this is possible and what we might be doing wrong please?

I am late to help the OP but I had the same problem. I am not sure who is to blame here, but in the lipo batteries that I bought, when plugged into the rider plus through the the JST connector, the polarities of the battery do not match. I am not sure if the JST connector has a standard way of placing the + and - cables, but it my case it was wrong.
I am starting to think that the lipo rider is wrong, since two of the batteries (that have JST connector) that I have, have the JST connector the same way.

Anyways, fixing this make it work fine. I hope it helps someone.