Hi
Just bought a “Blue Smart IP22 Charger 12/30 (3), 12VDC/30A”
Bought it as I have 3 x 100A lithium batteries in my boat, that i want to charge all at once.
But it only charge one of the batteries at a time?
Do I need to change some settings, other than setting it on “lion”?
I have to similar batteries and one newer model.
Hmm. Just did some troubleshooting .
I’ve tried disconnecting the batteries, and left one connected, and it still won’t charge, tried it on all 3 batteries 
It worked earlier with just 2 batteries connected, but now it won’t charge at all?
It’s just stuck on abs - 14,2V - 0A(no matter what what batteri that is connected) , and the batteries is on 60% or lower.
Can it be some software error??
If the charger output is 14.2V then the charger is working by generating the required voltage. If the current is 0A then there is a disconnect somewhere in the system between the charger and the battery. Things to look at are a blown fuse, broken wire, broken isolator, battery BMS is stopping charge. Have you checked the voltage on the battery terminals using a multimeter. Have you checked the battery voltage on Bluetooth app during charging.