In this episode of our full time RV life Battle Born Lithium Batteries are described as true drop in replacements for the 12 volt deep cycle batteries that power the 12 volt systems of most late model RVs. This would lead one to believe that there are no addition costs, simply remove the old batteries and install the new lithium's, but is that really the case? Are there other expenses involved beyond just the batteries? Let's talk about it ...