How to Charge Your RV Battery with a Generator

Are you looking for a way to charge your RV battery without having to rely on shore power? If so, you're in luck! A generator is a great way to charge your RV battery and keep your vehicle running smoothly. But before you start charging, there are a few things you should know. Yes, your RV generator, when plugged in and running, will charge your home batteries and power any 120 volt appliance. Typically, a generator will need approximately 3,500 watts of capacity and 8 amps of power to fully recharge your 12-volt RV battery.

However, a generator with a capacity of 4,000 watts can be useful for charging the battery more quickly. When charging RV batteries, it's important to control them so they don't overcharge or overheat, which could cause permanent damage to the battery. Be sure to check the battery specifications to make sure you select the best RV generator for your unit. I recommend a generator with a minimum of 3500 watts and 8 amps of power to charge your 12 volt RV battery.

The battery will charge a little faster if you get a more powerful generator, but you should be OK with 3500 watts. RV solar battery chargers are designed with solar panels on top. They're usually quite small and light, especially when you compare them to the generator's battery chargers. Like other types of RV battery chargers described above, they can be manual or automatic.

A 2000 watt generator produces enough voltage to sufficiently operate a 10-amp battery charger or a three-stage charger. Most RVs with inverters will allow you to control the proportion of power from a generator or from the ground that is used to recharge your home's batteries. An RV converter is used instead of batteries because it has a longer lifespan and can handle large volts of electricity that are difficult for household batteries. So, if you plan to store your RV outside during the winter while it's plugged in, it might make more sense to remove the batteries and charge them occasionally during the winter. Some devices may run solely on solar energy, but depending on the size and number of panels you have, you'll only generate a small amount of energy for many parts of the day. When it comes to how to prepare for full-time motorhome living, or even shorter trips in a motorhome, these are the types of things you want to know about.

When recharging the battery with a generator, perform these tasks in a well-ventilated area and wear goggles and gloves to help prevent unwanted and potentially serious injuries. There are many types of batteries and a selection of converters, each with its own way of charging RV batteries with a generator. Your RV's converter or inverter will use power from your generator to recharge your home's batteries while it's running. Typical maintenance includes replacing the generator oil & oil filter, replacing the generator air & fuel filters, and inspecting the generator exhaust. We've put together nine easy steps to charging RV batteries with a generator so you can quickly get back to enjoying life on the road with a minimum of unwanted interruptions. Since the RV battery is such an essential part of the vehicle, it's important to know how to achieve full charge with a generator, especially when you're in the middle of nowhere without access to shore power.

Solar panels are particularly useful for boondocking, where you don't have ground power connections and you're not using a generator.

Nine Steps for Charging Your RV Battery With A Generator

1.Check your RV's specifications for the type of battery charger that is recommended for your unit.2.Select an appropriate generator. Make sure it has enough wattage (at least 3,500 watts) and amperage (at least 8 amps) for charging your 12-volt RV battery.3.Connect the generator's output cable into an appropriate outlet on your RV.4.Turn on the generator. Make sure it is running at full capacity before connecting it to your RV.5.Connect the RV's converter or inverter into an appropriate outlet on your generator. This will allow power from your generator to recharge your home's batteries while it is running.6.Monitor the RV's converter or inverter while charging your home's batteries.7.Turn off the generator, disconnect it from your RV, and turn off all appliances when finished charging.8.Perform regular maintenance on your generator, including replacing oil & oil filter, air & fuel filters, and inspecting exhaust.9.Store your RV, if necessary, in an area that is well ventilated while plugged in.


Charging an RV battery with a generator, whether manually or automatically, is an easy process that can help keep your vehicle running smoothly while out on the road.

Be sure to check all specifications before selecting an appropriate generator, as well as performing regular maintenance on it for optimal performance.


Sue Bubb
Sue Bubb

Extreme zombie trailblazer. Friendly music expert. Evil pop culture specialist. Proud zombie junkie. Unapologetic music fan. Unapologetic foodaholic.

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