Quick Answer
Yes, you can run an RV and tiny home from the same battery bank, but proper sizing and considerations are necessary to ensure reliable power supply and avoid deep discharging the batteries.
Battery Bank Sizing Considerations
When sizing a battery bank for an RV and tiny home, consider the combined power requirements of both systems. For example, a 20-foot RV and a 600-square-foot tiny home might have a total power demand of 5-7 kilowatts. To meet this demand, you’ll need a battery bank with a sufficient capacity and depth of discharge (DOD) rating.
Calculating Battery Bank Capacity
To calculate the required battery bank capacity, consider the following factors: the total daily energy demand, the number of days you want to sustain power during an outage, and the DOD rating of the batteries. Let’s assume a daily energy demand of 50-70 kilowatt-hours (kWh) and a DOD rating of 50%. In this case, a 20 kWh battery bank might be sufficient for a 2-day outage. However, this calculation should be adjusted based on your specific needs and the efficiency of your inverter and charging system.
Inverter and Charging System Considerations
When running an RV and tiny home from the same battery bank, it’s essential to consider the efficiency and capacity of your inverter and charging system. Look for an inverter with a high efficiency rating (e.g., 95% or higher) and sufficient capacity to handle the combined power requirements of both systems. Additionally, ensure that your charging system can keep up with the daily energy demand and recharge the battery bank efficiently. This might involve installing multiple charging sources, such as solar panels and a generator, to maintain a healthy state of charge.
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