Short Answer: The best battery for an RV depends on what you need to power, how long you camp between charges and the space available for your battery bank. For motorhome house batteries, choose a deep-cycle model with enough capacity for your daily use, the correct system voltage and compatibility with your charging equipment.
A weekend at a campground and a week without hookups put different demands on your battery. Before buying, consider which lights and appliances you need to power, how often you can recharge and whether your current equipment supports replacing your old battery.
Fullriver’s deep-cycle AGM lineup gives RV owners several ways to build a house battery bank.
Start With Your RV’s Power Needs
Your RV’s house batteries power equipment such as interior lights, the water pump and the furnace blower when you’re away from hookups. The capacity you need depends on which equipment you use, how long you run it and how often you can recharge. A weekend with electrical hookups places different demands on your battery bank than several days of off-grid camping.
Before comparing batteries, check your system voltage, available compartment space, terminal connections and charging equipment. Then compare amp-hour capacity to your expected power use between charges. A larger battery may provide more stored energy, but it also needs to fit your RV’s space and weight limits. Use the model comparison below to narrow your options.
Compare Fullriver Motorhome House Batteries
The battery capacity figures below use the 20-hour discharge rate, or C20. Weight is for one battery. Group designations help narrow the search, but actual dimensions and terminal connections still need checking.
| Fullriver model | Voltage | Capacity at C20 | Weight | When to Consider |
| DC105-12 (Group 27) | 12V | 105Ah | 66.58 lb | A Group 27 installation needing 105Ah |
| DC115-12 (Group 31) | 12V | 115Ah | 72.1 lb | A Group 31 installation needing 115Ah |
| DC224-6 (GC2) | 6V | 224Ah | 67.9 lb | A two-battery 12V bank providing 224Ah |
| FFD115-12 (Group 31) | 12V | 115Ah | 71.7 lb | Comparing purchase price for a 115Ah Group 31 replacement |
| FFD224-6 (GC2) | 6V | 224Ah | 67.3 lb | Comparing purchase price for a two-battery 224Ah bank |
| EGL100-12 (Group 31) | 12V | 100Ah | 78.48 lb | Frequent cycling with a 100Ah Group 31 battery |
| EGL220-6 (GC2) | 6V | 220Ah | 82.67 lb | Frequent cycling with a two-battery 220Ah bank |
For a meaningful cycle-life comparison, request model-specific test data that states depth of discharge, temperature and the capacity threshold used to define end of life. Series-level figures alone do not establish how these models compare under identical conditions.
Confirm the written warranty for the selected model and RV application with Fullriver or your seller before purchase.
DC, Full Force or EGL: Where Should You Start?
DC Series: Start Here for an RV House Battery Replacement
The DC Series is a starting point for replacing an RV house battery or building a larger AGM bank. It includes options for both individual 12V batteries and paired 6V installations, so your available space and required capacity help narrow the choice.
- DC105-12: Consider this 105Ah model when your installation calls for a Group 27 battery and its capacity meets your needs.
- DC115-12: Choose this 115Ah option when you have room for its Group 31 dimensions and want more rated capacity than the DC105-12.
- DC224-6: Consider two matching batteries in series when your RV supports a two-battery installation. Together, they provide a nominal 12V, 224Ah bank.
Full Force Series: Compare When Purchase Price Is a Priority
The Full Force Series offers deep-cycle AGM options positioned around affordability. If you’re watching your replacement budget, compare a Full Force quote with a similarly sized DC model while checking capacity, fit and warranty terms.
- FFD115-12: Compare this 12V, 115Ah Group 31 model with the DC115-12 for a replacement that meets the same rated capacity requirement.
- FFD224-6: Compare a matching pair with the DC224-6 pair when planning a nominal 12V, 224Ah bank.
EGL Series: Consider When You Cycle the Batteries Frequently
The EGL Series is designed for long cycle life. For RV owners, that makes it worth evaluating when frequent off-grid camping means regularly discharging and recharging the house bank. Compare model-specific cycling data alongside capacity and weight before choosing.
- EGL100-12: Consider this 12V, 100Ah Group 31 model when cycle life is a priority and 100Ah meets your capacity needs. It weighs more and has less rated capacity than the DC115-12.
- EGL220-6: Consider a matching pair for a nominal 12V, 220Ah bank when frequent cycling matters and your compartment can accommodate the combined size and weight.
Which Fullriver Fits the Way You Travel?
Use your camping habits to narrow the list:
- Weekend camper: Compare DC105-12 and DC115-12 when their dimensions and capacity suit your setup. FFD115-12 provides another Group 31 option to price against your needs.
- Full-time RVer: Living on shore power differs from cycling batteries daily. For frequent off-grid use, discuss EGL100-12 or an EGL220-6 bank with Fullriver alongside the DC options.
- Boondocker: For dry camping, consider a pair of DC224-6 or EGL220-6 batteries if the compartment and battery tray support them. Plan for both your loads and the charging available between stops.
- Solar-equipped RV: DC, Full Force and EGL can be candidates when the controller meets their charging requirements. Solar panels do not remove the need to match storage capacity to daily use.
Two matching DC224-6 batteries wired in series form a nominal 12V, 224Ah bank. Two EGL220-6 batteries form a 12V, 220Ah bank. Series wiring adds voltage, not amp-hours. For capacity calculations, see our camper battery size guide.
Do You Need an RV House Battery or a Starting Battery?
An RV house battery powers living-area equipment and handles repeated discharge and recharge. A starting battery supplies the brief burst of current needed to crank an engine. Interior lights, a water pump and a furnace blower are examples of house-battery loads.
A motorhome generally has both house and chassis batteries; a travel trailer’s house bank serves the living space while its tow vehicle has its own starting battery. Focus on deep cycle batteries for the house bank. For engine-starting needs, ask about a compatible Full Throttle battery after checking the vehicle’s requirements.
How Long Do Fullriver AGM RV Batteries Last?
A Fullriver AGM battery’s service life depends on discharge depth, charging, temperature and storage. Frequent deep discharges and long periods left undercharged can shorten its life. Choose enough capacity for your usual camping needs and follow Fullriver’s charging instructions to help protect your investment.
When comparing batteries, distinguish cycle life from runtime. Cycle life measures repeated discharge and recharge under defined test conditions; runtime describes how long the battery powers your equipment between charges. Neither guarantees a fixed number of years before replacement. Our guide to Fullriver AGM battery lifespan explains how use and care affect longevity.
Understand Lifespan, Cycle Life and Runtime
Lifespan means years before replacement. Cycle life describes repeated discharge and recharge under defined test conditions. Runtime is how long a battery supports your loads before recharging.
For Fullriver AGM batteries, deeper discharges and long periods left undercharged can shorten service life. Follow the charging instructions and account for storage conditions. Our guide to Fullriver AGM battery lifespan explains why use patterns matter more than a blanket promise of a certain number of years.
AGM vs Lithium for RV Use
AGM deserves consideration when your existing charging system meets its requirements and the bank’s weight and capacity suit your travels. Avoid assuming that any charger labeled “lead-acid” has the correct settings for your selected battery.
LiFePO4, a lithium battery chemistry, often offers less weight and a larger usable share of rated capacity, making it worth comparing for frequent off-grid use. However, a chemistry change calls for a review of the whole battery system, including its charging equipment. Compare installed costs, including any equipment changes, rather than battery price alone.
| Consideration | AGM | LiFePO4 |
| Battery weight | Check the complete bank against tray and vehicle limits | Often lighter for comparable stored energy |
| Charging setup | Must meet the selected AGM model’s requirements | May require changed settings or equipment |
| Cold-weather use | Follow temperature-compensated charging guidance | Check charging-temperature limits and any heating or cutoff features |
| Regular maintenance | No watering; inspect connections and follow storage instructions | No watering; follow battery-management and storage instructions |
Check Your Charging Equipment Before Buying
Review every power source you use for charging: the shore-power converter, solar charge controller and any alternator charging system. Match voltage and charging settings to the chosen bank using Fullriver’s installation and operation manual.
AGM batteries also need appropriate ventilation. A sealed design does not mean they can never release gas. Check the compartment, mounting, battery cables and connections before installation.
Where Can You Buy Fullriver RV Batteries Online?
Use the Fullriver dealer locator and its Online Retailers tab to find a seller. Confirm the exact model, availability, delivered price and return terms before ordering.
Ask for the warranty terms that apply to your RV installation and keep the purchase record. Fullriver directs warranty claims through the place of purchase, with its support team available for questions. Compare your shortlisted models, then find a Fullriver dealer to help match the battery to your travels.
RV Battery FAQs
What is the best battery for an RV?
For a shortlist of Fullriver motorhome house batteries, compare DC105-12 and DC115-12 first. Choose according to fit, power use and charging equipment; consider the other models above when your bank layout or cycling needs differ.
What is the difference between an RV house battery and a starting battery?
A house battery supports repeated discharge for living-area power. A starting battery supplies engine-cranking current. Select the battery for the job it will perform.
How long do AGM RV batteries last?
Service life varies with discharge depth, charging, temperature and storage. A cycle rating or design-life statement is not a promise that every RV installation will last a fixed number of years.
Is AGM or lithium better for an RV?
AGM can suit a compatible existing setup. Lithium may better suit weight-sensitive or energy-intensive installations. Compare specific products, charging requirements and total installation cost.
Can I use two 6-volt batteries in my RV?
Yes, if your system is designed for the resulting voltage. Two matching 6V batteries in series create a 12V bank while retaining the Ah rating of one battery. Check space, weight and installation requirements.
Where can I buy Fullriver RV batteries online?
Start with the online retailers listed in Fullriver’s dealer locator. Contact the seller to confirm your model, delivery options and warranty coverage for RV use.
