Inverter
A device that converts the RV's 12V DC house battery power into 110V AC power, allowing standard household appliances to run without shore power or generator.
Also called: inverter, RV inverter, power inverter, DC-to-AC inverter
An inverter converts the RV’s 12V DC house battery power into 110V AC power, allowing standard household appliances to run without shore power or generator.
Inverters are standard in modern Class B builds and some luxury Class A rigs. Most Class C rentals don’t have one factory-installed.
What inverter wattage allows
| Inverter size | Powers |
|---|---|
| 300-500W | Laptop charging, phone charging, small electronics |
| 1,000-2,000W | Microwave (brief use), small appliances, TV |
| 3,000W+ | Coffee maker, hair dryer, larger appliances |
| 3,500W+ with surge capacity | Air conditioner (limited duration only) |
Pure sine vs modified sine
- Modified sine wave — cheaper, fine for resistive loads (lights, coffee maker)
- Pure sine wave — required for sensitive electronics (laptops, medical equipment, anything with a microcontroller)
For renters, pure sine wave inverters are the right answer. Modified sine causes “buzz” in audio equipment and can damage some electronics.
Battery draw math
An inverter draws power from the house battery at roughly 10:1 ratio (110V AC to 12V DC). Running a 100W laptop charger draws ~10 A from the house battery. Running a 1,500W microwave draws ~150 A.
A 100 Ah house battery can run a laptop for ~5-8 hours at the cost of fully discharging.
What renters should ask
Before booking a rental for digital-nomad or off-grid work trips:
- Is there an inverter installed?
- What’s the wattage rating?
- Pure sine wave or modified?
- What’s the house battery capacity (the inverter is only useful with adequate batteries)?
A 2,000W pure sine inverter + 200 Ah lithium battery + 300W solar is the modern “off-grid work” setup. Many premium Class B rentals have this configuration.