Go Power! Sun Cycle 12V 100Ah AGM Deep Cycle RV Battery (GP-AGM-100-12V)

The Go Power! Sun Cycle GP-AGM-100-12V is a maintenance-free, 12-volt AGM deep cycle battery designed to provide dependable power for RV refrigerators, solar charging systems, motorhomes, travel trailers, camper vans, and off-grid electrical equipment. With 100Ah of capacity at the standard 20-hour discharge rate, this battery is built for repeated charging and discharging in RV house battery applications.

Unlike conventional starting batteries, the Sun Cycle is designed to supply power over extended periods, making it a practical choice for keeping your refrigerator controls, lighting, water pump, and other 12V appliances operating when shore power isn't available.

The GP-AGM-100-12V uses Absorbent Glass Mat (AGM) technology, which holds the electrolyte in fiberglass separators rather than allowing it to move freely inside the battery. This provides a sealed, maintenance-free design without the need to regularly check or refill battery water.

Whether you're replacing a worn-out RV house battery, expanding your existing AGM battery bank, or adding solar power to your camper, the Go Power! Sun Cycle provides reliable energy storage without requiring a lithium battery conversion.

Key Features

• 100Ah Deep Cycle Capacity: Provides 100 amp-hours at the 20-hour discharge rate for RV house battery applications.

• 12V Battery System Compatibility: Designed for standard 12V RV electrical systems.

• AGM Battery Technology: Sealed, valve-regulated lead-acid construction eliminates routine battery watering.

• Solar Charging Compatible: Designed for use with properly configured RV solar charging systems.

• Deep Cycle Construction: Built to withstand repeated charging and discharging rather than primarily supplying engine-starting current.

• Maintenance-Free Design: No routine electrolyte refilling required.

• Spill-Resistant Construction: Absorbed electrolyte reduces the risk of leaks compared with traditional flooded lead-acid batteries.

• Low Self-Discharge: Helps retain charge during storage when properly maintained.

• Integrated Carrying Handles: Makes battery handling and installation more convenient.

• Group 27 Size: Fits many RV battery installations designed for compatible Group 27 batteries.

• Cold-Weather Performance: AGM technology allows charging below freezing within the manufacturer's specified temperature limits.

• 2-Year Manufacturer Warranty: Backed by Go Power!'s published warranty.

Technical Specifications

Why Your RV Refrigerator Needs a Reliable Battery

Many RV owners assume that running their refrigerator on propane means they don't need battery power.

Unfortunately, that's not how most electronically controlled RV refrigerators work.

Many Norcold and Dometic absorption refrigerators require 12V DC power to operate their electronic control boards, temperature controls, ignition systems, and safety circuits, even when they're cooling with propane.

If your house battery becomes discharged, your refrigerator may stop operating despite having plenty of propane available.

Modern 12V compressor refrigerators depend even more directly on the battery system because they use DC electricity to operate their compressors.

A properly maintained Go Power! AGM battery helps provide the stable 12V electrical supply these refrigerators need.

What Happens When Your RV Battery Gets Too Low?

Depending on the refrigerator model, low battery voltage can cause:

• Refrigerator control panel shutting off

• Propane ignition failure

• Intermittent refrigerator operation

• Low-voltage fault codes

• Compressor refrigerator shutdowns

• Refrigerator stopping overnight while dry camping

If your refrigerator works while connected to shore power but stops when unplugged, the house battery and its electrical connections are among the first things worth checking.

Low battery voltage isn't always caused by a defective refrigerator control board.

How Long Will a 100Ah AGM Battery Run an RV Refrigerator?

That depends on the refrigerator's electrical consumption, battery condition, temperature, and other equipment connected to the battery bank.

A 100Ah AGM battery does not necessarily provide 100Ah of practical usable capacity during routine operation.

Lead-acid batteries generally last longer when they aren't repeatedly discharged to very low states of charge.

For planning purposes, many RV owners use approximately 50% depth of discharge as a reasonable target for extending battery life.

That would provide roughly 50Ah of planned battery usage from a fully charged 100Ah battery under favorable conditions.

Example: 12V Compressor Refrigerator

Suppose your compressor refrigerator averages 3 amps over time, including its normal cycling.

These figures are illustrative and assume a constant 3A average draw.

At that average consumption, 50Ah would theoretically support approximately 16–17 hours of refrigerator operation before reaching the planning target.

Actual runtime may be shorter because of additional RV loads, battery age, temperature, voltage drop, and the effects of discharge rate on AGM capacity.

Important: A propane absorption refrigerator typically uses considerably less 12V electrical power than a compressor refrigerator while operating on propane. However, it still needs sufficient DC voltage for its electronic controls.

AGM vs. Lithium: Which Is Better for Your RV?

Both AGM and lithium batteries can work well in RV applications, but they're designed around different advantages.

When Does an AGM Battery Make Sense?

The GP-AGM-100-12V is a particularly practical choice when:

• You're replacing an existing AGM battery.

• Your RV already has an AGM-compatible converter or solar charge controller.

• You want a sealed battery without regular electrolyte maintenance.

• You're maintaining a smaller RV electrical system.

• You don't want to replace charging equipment as part of a lithium conversion.

For RV owners looking to maximize usable battery capacity while minimizing weight, lithium may be worth considering. However, AGM remains a dependable option for many traditional RV electrical systems.

Charging Requirements for the GP-AGM-100-12V

Proper charging is essential for battery performance and service life.

Go Power! specifies the following charging requirements at approximately 77°F (25°C):

• Cycle Charging Voltage: 14.4–15.0V

• Float Charging Voltage: 13.5–13.8V

• Initial Cycle Charging Current: Less than 30A

• Temperature Compensation: Recommended according to manufacturer specifications

Your RV converter, inverter charger, or solar charge controller should be configured for AGM batteries and remain within the manufacturer's recommended limits.

Can I Use My Existing RV Converter?

Possibly.

Many modern RV converters support AGM batteries, but not every converter provides the correct charging profile.

Older single-stage converters may not properly charge the battery or may maintain an unsuitable voltage for extended periods.

Before installing the GP-AGM-100-12V, verify your converter's charging voltage and AGM compatibility.

Can I Charge This Battery With Solar Panels?

Yes.

The Sun Cycle battery is designed for solar and inverter applications.

Your solar panels must be connected through an appropriately sized charge controller configured for AGM charging.

Never connect an unregulated solar panel directly to the battery.

Installation & Compatibility Information

The Go Power! GP-AGM-100-12V is a Group 27 deep cycle battery intended for compatible 12V battery systems.

Before installing, check the battery compartment dimensions, terminal connections, cable routing, and charging system compatibility.

Important Installation Considerations

1. Verify Battery Dimensions: The battery measures 12.01 inches long, 6.61 inches wide, and 9.02 inches tall including terminals.

2. Check Battery Weight: At 67.5 lbs, make sure the battery tray and retaining system can safely support the battery.

3. Inspect Battery Cables: Replace damaged or heavily corroded cables and terminals.

4. Confirm Charging Compatibility: Use an AGM-compatible charger or properly configured converter.

5. Protect Against Short Circuits: Use the appropriate fuses, cable sizing, and electrical protection for the installation.

6. Secure the Battery: Install the battery in an appropriate enclosure or battery tray using suitable restraints.

7. Provide Appropriate Ventilation: Although AGM batteries are sealed and normally have low gas emissions, they can vent under abnormal conditions. Follow RV and battery manufacturer ventilation requirements.

8. Avoid Mixing Batteries: Do not casually combine a new AGM battery with batteries of different ages, capacities, or chemistries.

Common Problems & Troubleshooting

RV Refrigerator Works on Shore Power but Not Battery Power

Start by checking battery voltage at the refrigerator's 12V supply connections.

If voltage is too low, inspect the battery's state of charge, cable connections, fuses, and charging equipment.

A refrigerator may function correctly while the converter supplies power but stop when relying on a discharged house battery.

Battery Voltage Drops Quickly After Disconnecting Shore Power

Possible causes include an aging battery, incomplete charging, unexpected electrical loads, or a battery that has lost usable capacity.

Charge the battery fully using an appropriate AGM charger and have it load-tested if capacity problems continue.

Solar Panels Are Charging, but the Battery Never Reaches Full Charge

Check the solar controller's AGM charging settings, panel output, wiring, and available sunlight.

Insufficient solar production or incorrect charge settings can prevent the battery from reaching a full charge.

Battery Loses Charge During Storage

AGM batteries naturally self-discharge over time, and RVs often have small electrical loads that continue operating even when most equipment is turned off.

Disconnect unnecessary loads and maintain the battery according to Go Power!'s storage recommendations.

The manufacturer notes that batteries stored above 77°F may need recharging sooner than those stored in cooler conditions.

Battery Becomes Hot While Charging

Excessive battery heating can indicate overcharging, incorrect charger settings, internal damage, or another electrical problem.

Stop charging if the battery becomes unusually hot, swells, leaks, or vents. Have the battery and charging system inspected before returning it to service.

Frequently Asked Questions

Is the GP-AGM-100-12V a Starting Battery?

No. This is primarily a deep cycle battery designed to provide sustained electrical power for RV house systems, solar installations, and inverters.

It is not marketed as a dedicated engine starting battery.

Is This a 100Ah or 110Ah Battery?

Both ratings are correct, but they use different discharge rates.

Go Power! rates the battery at 100Ah over 20 hours and 110Ah over 100 hours.

For general RV battery comparisons, use the 100Ah rating at the 20-hour rate.

Does This Battery Require Water?

No. The sealed AGM construction does not require routine electrolyte checks or water refilling.

Can I Connect Two Batteries Together?

Compatible AGM batteries can be combined in an appropriately designed battery bank.

Connecting matched 12V batteries in parallel increases available amp-hour capacity while maintaining nominal 12V output.

Series connections change system voltage and should only be used when the complete electrical system is designed for that configuration.

Follow Go Power!'s battery bank installation guidance and use properly matched batteries.

Will This Battery Work With My Norcold or Dometic Refrigerator?

It can supply 12V power to compatible refrigerator systems when installed as part of a correctly sized and configured RV electrical system.

Actual compatibility and runtime depend on your refrigerator model, electrical consumption, wiring, and charging equipment.

Can I Replace My Existing Flooded Lead-Acid Battery With This AGM Battery?

Often, yes, provided the physical dimensions, terminal configuration, and electrical requirements are compatible.

You should also confirm that your RV's charging equipment supports AGM charging.

Does This Battery Have a Built-In BMS?

No. The GP-AGM-100-12V is an AGM lead-acid battery, not a lithium battery.

It does not require the type of electronic Battery Management System used with many lithium batteries.

Does This Battery Fix AC Ripple Problems?

No. A healthy battery can help stabilize an RV's 12V electrical system, but replacing a battery is not a substitute for repairing a converter producing excessive AC ripple.

If you're experiencing repeated RV refrigerator power board problems, inspect the electrical supply and converter before assuming the battery is responsible.

Important Product Information

Go Power! GP-AGM-100-12V is a 12V, 100Ah AGM deep cycle battery, not a lithium battery.

It is designed for RV solar and house battery applications and requires compatible lead-acid charging equipment.

With its maintenance-free construction, Group 27 size, and deep cycle capability, the Go Power! Sun Cycle GP-AGM-100-12V is a practical choice for RV owners who want dependable 12V power for their refrigerator and other essential electrical equipment.

At RV Fridge Guys, we know that even the best refrigerator can't operate properly without a reliable electrical supply. Maintaining a healthy battery system is one of the most important steps toward avoiding unexpected refrigerator shutdowns and electrical problems while traveling.