Understanding how your RV converter and shore power work together can help you better manage your trailer’s electrical system. Here’s how an RV converter powers your 12-volt systems, charges your batteries, and works with lithium battery banks.
When an RV is connected to shore power at a campground or home, it receives 120-volt AC power, similar to what powers appliances in a home. However, many of the systems inside an RV actually operate on 12-volt DC power.
Systems such as lighting, water pumps, fans, furnace controls, and many electronics all rely on 12-volt power. The device responsible for supplying this power—and charging the battery bank at the same time is called the converter.
What is an RV Converter?
An RV converter is an electrical device that changes one type of power into another.
Specifically, it converts:
120-volt AC power → 12-volt DC power
This allows the RV’s 12-volt electrical systems to operate whenever the trailer is connected to shore power.
At the same time, the converter also functions as a battery charger, restoring energy to the battery bank while the trailer is plugged in.
- Fun Fact: AC/DC isn’t just an electrical term! The famous rock band got its name from “alternating current/direct current.” Discover the surprisingly wholesome story behind AC/DC’s misunderstood name.
Want to learn more? If you’re interested in the science behind AC and DC power and how they differ, watch the video below for a deeper explanation.
How Does an RV Converter Work?
When the trailer is connected to shore power, the converter supplies electricity directly to the trailer’s 12-volt system.
This means many components are powered by the converter rather than drawing energy from the batteries.
These systems include:
- Interior lighting
- Water pump
- Furnace electronics
- Vent fans
- Refrigerator control systems
- USB charging ports
Because the RV converter supplies 12-volt power, the batteries can recharge at the same time, ensuring they are ready for use when the trailer is disconnected from shore power.
Does Shore Power Charge RV Batteries?
In addition to powering the trailer’s electrical systems, the converter continuously charges the battery bank.
Encore trailers are equipped with a 70-amp converter, allowing the batteries to recharge quickly while connected to shore power.
This higher charging capacity helps recharge RV batteries faster after extended off-grid camping.
Can an RV Converter Charge Lithium Batteries?
Yes. When an Encore RV is connected to shore power, the converter supplies power to the trailer’s 12-volt electrical systems while simultaneously charging the battery bank.
Encore trailers are equipped with a 70-amp RV converter, allowing the batteries to recharge quickly while connected to shore power. This higher charging capacity helps restore battery power faster after extended off-grid use.
How Multi-Stage RV Battery Charging Works
Modern converters use multi-stage charging to safely and efficiently recharge the battery bank.
These charging stages include:
Bulk Charging: During the bulk stage, the converter delivers higher charging current to quickly restore battery capacity.
Absorption Charging: As the battery approaches full charge, the charging current gradually decreases to protect the battery and complete the charging process.
Float Mode: Once the battery is fully charged, the converter switches to a maintenance mode that holds the battery at a safe voltage level without overcharging it.
This smart charging process ensures the battery bank is charged efficiently while maintaining long battery life.
Photo Source: Generation Solar
Can You Leave an RV Plugged Into Shore Power?
Many owners wonder if it is safe to leave their trailer plugged into shore power for extended periods.
Because Encore converters use smart charging technology, they automatically reduce charging voltage once the batteries are full. The system then maintains the batteries at a safe level without overcharging them.
This means owners can safely leave their trailer plugged into shore power while stored or parked at home.
Photo Source: National Park Service
The Encore Advantage: Encore RV's Shore Power & Converter System
Encore trailers use a 70-amp lithium-compatible RV converter designed to power the trailer and recharge the battery bank whenever shore power is available.
Key benefits include:
- Converts 120-volt shore power into 12-volt power for the trailer
- Powers interior systems while plugged in
- Recharges the battery bank quickly
- Automatically detects lithium batteries and adjusts the charging profile
- Uses smart charging stages to protect battery life
By combining shore power charging with lithium batteries, solar charging, DC-to-DC charging, and advanced battery monitoring, Encore trailers provide a complete RV electrical system designed for reliable performance both on and off the grid.
