Charging Eufy Cam for the First Time!!

I have just received my First New Eufy 2 Camera Package (Excited!!)
I had a question about the initial charging of the 2 Cameras. I have the first Camera plugged into the back of the Hub. as suggested for Faster Charging.
Reading the Initial Setup Guide - It says that the Light will show solid Red whilst charging and then go off when it is fully charged.
From the moment I plugged in the battery for charging - the light has shown Solid Blue??
Does this mean that the battery is fully charged. Not sure why the instructions mention Red?
Thanks …