I’ve got a 12v trolling motor. I would like to add a second battery wired in parallel to keep 12 volts but increase my capacity when trolling.

question is, I’ve currently got 1 cranking battery and 1 trolling battery with a 2 bank minn Kota Charger. If I add a second trolling battery in parallel, can I use my two bank charger to charge all 3 batteries? 1 bank for cranking battery and the other bank to charge both parallel batteries?