I have 2 stowaway 12v batteries i purchased from Academy a couple months ago. I wired them in parralel to run my trolling motor. What is the best way to charge them? I have been connecting my charger to the pos post on one battery and the neg post on the other. I have been charging at 2amps for over 24 hrs but they do not seem to be taking a solid charge(as my trolling motor thrust is very low). Im going to run them on 10amps tonight for a 6 hrs and see how they do. Any suggestions?