RVIA Registered RV Technician Practice Test

The primary type of battery used in an RV's 12v system is the lead acid battery. This choice is grounded in the specific energy requirements and operational characteristics typical of recreational vehicles. Lead acid batteries are well-regarded for their ability to provide high starting currents, which is essential for powering up systems in RVs that may have a significant electrical draw, such as lights, appliances, and the RV's starting system. Lead acid batteries come in two varieties: flooded and sealed (AGM). Flooded lead acid batteries are often the most common due to their cost-effectiveness, while AGM (Absorbent Glass Mat) batteries offer advantages in terms of maintenance and leakage prevention. Their construction allows them to withstand deep discharges and recharges effectively, making them suitable for the cyclical nature of RV use where power may be drained and replenished frequently. In contrast, alkaline batteries are typically used in small handheld devices and are not practical for the high discharge rates required in RV applications. Nickel cadmium batteries have limited use in RVs due to their high self-discharge rates and the environmental concerns associated with their disposal. Dry cell batteries, while used in various applications, do not meet the storage capacity and discharge needs typical of an RV's electronic system