Replacing traditional lead-acid battery with Lithium Ion Battery. I hope that my thoughts and experiences can be of help to anyone who is also thinking about upgrading their batteries on their boat and considering switching to lithium batteries (LiFePO4). It’s important to consider the power requirements of your electrical systems and the space constraints on your boat when making a decision. It’s also important to consider the charging and management systems that you will need to properly charge and maintain your new batteries. I hope that the information provided here can assist you in making an informed decision on what type of batteries will work best for your situation.