Among the top contenders in this category is the Renogy 200Ah Lithium Iron Phosphate Battery. For our Renogy lithium battery review, we put the Renogy 200Ah LiFePo4 to the test. We installed 2 Renogy 200Ah Lithium Iron Phosphate Batteries in our 46ft sailboat, Gratitude, and after 5 months of use, we''re giving you an inside look at how …