It is always a good idea to test a battery to ensure that it is properly charged before you venture out onto the water. A marine battery gauge and tester can help to .
Find the highest rated products in our Battery Testers store, and read the. and Marine batteries and all tested good some were Flooded some AGM this unit .
I've used the Midtronics MDX-300 analyzer for about 10yrs , supported by a load tester. Love that Midtronics. device for all the boat AGMs and .