I’m looking to possibly switch over to lithium and wanted to find out if LifePo4 lithium batteries built in BMS and display screen are any good? I’m new to lithium and really know nothing about them except that they are lighter and should last a lot longer than regular batteries. They guy I’m looking to buy them from sells them for $350 each. I have a MK440PC 4-Bank Charger and wanted to confirm that it will work without issue on these batteries? Lastly, what size Lithium cranking battery would you recommend ? For the (3-12v 60ah I would be running a Garmin Force) not sure on cranking?? Same 60A or go up to 100A? Or Costco is having a 2 pack of Lion Energy Safari UT1300 batteries, not sure of the price, but those are 100AH each and I’m thinking if one battery craps out I’m out a trolling motor?? I run a Evinrude Etech 200 and 2 Garmin Ultra units (1-126SV AND 1-106SV). Is there anything else I need to know about Lithium’s? I don’t want to blow the bank on batteries but I’m always looking to upgrade in the best way possible. Thanks in advance for your help!