I own two 50 amp Ionic lithium batteries that power my MinnKota Ultrex. I generally fish 5 to6 hours per trip. When I get home and look at the Ionic app on my phone my batteries show between 85 to 92% left in the battery. Should I charge after every trip even though I have a lot of power left or is it Okay to skip charging and charge every other trip? The charger I have is an Ionic charger.