Hello Everyone!
I have a AC200max head unit. I bought a B300 expanded battery. Unfortunatelly, I can’t connect the two units with the cable added to the B300. The cable is not connected to the AC200max. Have you ever met this problem?
Thank a lot for a help!

Hello Bacha: So you cant connect the B300 to your Ac200Max.

When you purchased your B300, in the box is a cable P090D it is the battery expansion connection cable
P090D Cable B300

This is what you need. Did you get one