[Traylaw]

Take a pic of the top of the battery. I think you have a H5/EFB LN2. It's normal for a new battery to read a much higher CCA than listed on the battery. It is interesting you only have a 48% charge. Also you meter doesn't actually measure the CCA of the battery. The CCA is an estimated value based on the internal resistance, in your case that would be .0048 ohms.

 

[Traylaw]

OK, the group size 47 they are also known as H5 or LN2 depending on the country. They usually come in three versions Flood cell ( standard lead acid), EFB "Enhanced Flooded Battery" and AGM. Your's is an EFB. Your meter and charging equipment should be set to a standard flooded lead acid battery. The EFB battery is what you get when a Flooded Cell battery mates with an AGM.

 

[Traylaw]

The label on your battery says 450, that's what the manufacturer rates the battery. The meter compares the "entered" CCA number to the estimated CCA value which is based on the measured internal resistance to determine a good/bad condition. The meter uses the battery type you entered for estimating the CCA (based on measured resistance) and calculate the state of charge on the battery.
It's a good idea to write the estimated CCA value on the top of the battery. Over time you will see this value slowly decreasing, one day you will notice it's decreasing quickly....time to start thinking about a new battery.

 

[Traylaw]

Yes, it will charge your battery just fine. An EFB charges the exact same way as an old standard battery