Final answer:
Most RV applications use lead-acid batteries, which are rechargeable and can deliver the high current necessary for starting engines. They consist of multiple cells connected in series to meet voltage requirements, but do require maintenance and eventual replacement.
Step-by-step explanation:
The batteries used in most RV applications are lead-acid batteries. These are rechargeable batteries that are commonly utilized due to their reliability and the fact that they can deliver the high current required for starting engines. RV batteries, much like those in automobiles and marine engines, typically are composed of multiple cells connected in series to achieve the necessary voltage.
Lead-acid batteries operate based on Pb half-reactions in acidic solution. Each cell of a lead-acid battery generates a certain potential (Eᵢcell), and the total output voltage of the battery is the sum of the potentials of all cells connected in series. This setup is ideal for RVs which require a consistent and robust power source for starting and running appliances when off the grid. Despite their widespread usage, RV owners should be aware of the maintenance required and the eventual need to replace these batteries after a certain number of charge/discharge cycles.