12V 20Ah Deep Cycle AGM Battery (DC20-12)

🔋 FULLRIVER DC20-12 DEEP CYCLE AGM BATTERY

12V 20Ah Deep Cycle AGM Battery – M5 Terminals, 23-Minute Reserve Capacity & Maintenance-Free Power

⚡ Compact, dependable 12V deep cycle power for cyclic, standby, backup and auxiliary applications.

The Fullriver DC20-12 is a 12V 20Ah Deep Cycle AGM battery engineered to provide reliable stored energy, consistent cycling performance and long service life in compatible electrical systems.

Part of Fullriver’s trusted DC Series, the DC20-12 uses robust AGM construction, heavier plates and increased lead content to support reserve capacity and repeated charge-and-discharge operation.

With sealed maintenance-free construction, a compact footprint, M5 terminals and a 23-minute reserve capacity at 25A, it is a practical choice for compatible caravan, marine, backup, emergency, equipment and auxiliary power installations.

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⚡ KEY FEATURES

🔋 12V Deep Cycle AGM Performance
Designed for dependable cyclic, standby and auxiliary power applications requiring reliable 12V energy storage.

⚡ 20Ah Capacity at 20HR Rate
Provides dependable stored energy for compatible equipment, backup systems and auxiliary electrical loads.

🔁 Built for Repeated Cycling
Fullriver DC Series construction uses heavier plates and robust internal materials to support cycle life and reserve capacity.

⏱️ 23-Minute Reserve Capacity
Rated for approximately 23 minutes at a 25A load.

🔒 Sealed AGM Construction
Absorbed Glass Mat technology provides clean, dependable and non-spillable operation under normal conditions.

🛠️ Maintenance-Free Design
No routine electrolyte top-ups are required under normal operating conditions.

📦 Compact Battery Format
Designed for installations where available space is limited but dependable 12V power is still required.

🧯 Flame-Resistant ABS Case
Durable ABS plastic housing with a UL94-HB flame-resistance rating.

🔌 M5 Terminal Connections
Supplied with M5 terminals for secure connection to compatible electrical systems.

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🔋 DEPENDABLE DEEP CYCLE PERFORMANCE

The Fullriver DC20-12 is designed for applications where the battery is repeatedly discharged and recharged during normal use.

Its 20Ah capacity at the 20-hour rate provides dependable stored energy for compact auxiliary systems, equipment, backup power and standby applications.

Unlike a dedicated starting battery designed mainly for short bursts of high cranking current, the DC20-12 is built for sustained energy delivery and repeated cycling.

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🔒 SEALED AGM TECHNOLOGY

The DC20-12 uses Absorbed Glass Mat technology to retain electrolyte within internal glass mat separators.

This sealed construction provides maintenance-free operation and eliminates routine fluid top-ups under normal use.

Its non-spillable AGM design makes it suitable for a broad range of compatible mobile, standby and auxiliary installations.

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💪 FULLRIVER DC SERIES CONSTRUCTION

The DC20-12 forms part of Fullriver’s DC Series of deep cycle AGM batteries.

The DC Series uses heavier plates, increased lead content and carefully engineered internal construction to help provide strong reserve capacity, reliable cycling performance and long service life.

This makes the DC20-12 a practical option for applications where dependable repeated energy delivery is required.

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⏱️ 23-MINUTE RESERVE CAPACITY

The DC20-12 provides a reserve capacity of approximately 23 minutes at a 25A load.

This rating provides an additional indication of the battery’s stored-energy capability alongside its amp-hour capacity.

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📦 COMPACT POWER FOR SPACE-CONSCIOUS INSTALLATIONS

With dimensions of approximately 181mm long, 77mm wide and 167mm high, the DC20-12 provides 20Ah of deep cycle capacity in a compact battery format.

Its approximately 6.6kg weight reflects the substantial internal plate and lead content used to support cycling performance and durability.

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🔧 SUITABLE APPLICATIONS

• Boat and marine auxiliary power systems
• Caravans and RV electrical systems
• Floor cleaning machines
• Backup and standby power systems
• Compact deep cycle battery banks
• Auxiliary 12V power systems
• Small solar installations
• Off-grid power systems
• Alarm and security systems
• Emergency power systems
• Compatible cyclic equipment

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📐 PRODUCT SPECIFICATIONS

Brand: Fullriver

Model: DC20-12

Series: DC Series

Battery type: Deep Cycle AGM

Nominal voltage: 12V

Capacity at 5HR rate: 16.5Ah

Capacity at 20HR rate: 20.0Ah

Capacity at 72HR rate: 21.2Ah

Capacity at 100HR rate: 22.0Ah

Cold Cranking Amps: N/A

CA / MCA: N/A

Reserve capacity at 25A: 23 minutes

Reserve capacity at 75A: N/A

Internal resistance: 10.00mΩ

Group size: N/A

Case material: ABS plastic

Flame-resistance rating: UL94-HB

Terminal type: M5

Weight: Approximately 6.6kg

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📏 DIMENSIONS

Length: 181mm

Width: 77mm

Height: 167mm

Height including terminals: 167mm

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📦 WHAT’S INCLUDED?

• 1 × Fullriver DC20-12 12V 20Ah Deep Cycle AGM Battery

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⚠️ FITMENT & COMPATIBILITY INFORMATION

Please confirm the electrical, physical and charging requirements of your equipment before purchasing.

Check the required:

• Battery voltage – 12V
• Battery capacity
• Physical dimensions
• Terminal type – M5
• Terminal orientation and polarity
• Charging profile
• Available installation space
• Cyclic or standby application requirements

⚠️ IMPORTANT: Do not purchase based on capacity or physical size alone. Terminal configuration, charging requirements and application suitability must also match your equipment.

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❓ FREQUENTLY ASKED QUESTIONS

What type of battery is the Fullriver DC20-12?

The DC20-12 is a sealed 12V Deep Cycle AGM battery from Fullriver’s DC Series.

What is the battery capacity?

The battery is rated at 20.0Ah at the 20-hour discharge rate.

Does the capacity change at different discharge rates?

Yes. The supplied specifications list 16.5Ah at the 5-hour rate, 20.0Ah at the 20-hour rate, 21.2Ah at the 72-hour rate and 22.0Ah at the 100-hour rate.

Is the DC20-12 a deep cycle battery?

Yes. It is designed for compatible cyclic, standby and auxiliary deep cycle applications.

What is the reserve capacity?

The DC20-12 provides approximately 23 minutes of reserve capacity at a 25A load.

Does the DC20-12 have a CCA rating?

No CCA rating is supplied for this model. It is designed primarily as a deep cycle AGM battery rather than a dedicated engine-starting battery.

Is the battery maintenance-free?

Yes. Its sealed AGM construction means routine electrolyte top-ups are not required under normal operating conditions.

Is the battery non-spillable?

Yes. The sealed AGM design is non-spillable under normal operating conditions.

Can this battery be used in a caravan or RV?

Yes, where the electrical system requires a compatible 12V AGM deep cycle battery with matching capacity, dimensions, terminal type and charging profile.

Is the DC20-12 suitable for marine applications?

It may be suitable for compatible marine auxiliary and cyclic power applications where the battery specifications match the electrical system requirements.

Can it be used in a backup or standby power system?

Yes. The DC20-12 is suitable for compatible standby and backup applications requiring a 12V AGM battery of this capacity and size.

Can this battery be used for solar or off-grid power?

Yes. It may be suitable for smaller compatible solar and off-grid systems designed around a 12V AGM battery with appropriate charging equipment.

Can the DC20-12 be used for engine starting?

The DC20-12 is specified as a deep cycle AGM battery and no CCA rating is provided. It should not be selected for engine-starting applications unless the equipment manufacturer confirms suitability.

What terminals does the battery use?

The DC20-12 uses M5 terminals.

What are the battery dimensions?

The battery measures approximately 181mm long, 77mm wide and 167mm high.

How much does the battery weigh?

The DC20-12 weighs approximately 6.6kg.

What is the internal resistance?

The supplied internal resistance specification is approximately 10.00mΩ.

Is the battery case flame resistant?

Yes. The ABS plastic case has a supplied UL94-HB flame-resistance rating.

How do I know if the DC20-12 will replace my existing battery?

Compare the required voltage, capacity, physical dimensions, M5 terminal type and orientation, charging profile and application requirements with your existing battery and equipment specifications before purchase.

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🔋 COMPACT, DEPENDABLE DEEP CYCLE POWER

Choose the Fullriver DC20-12 when you need reliable cycling performance, useful reserve capacity and maintenance-free AGM power in a compact 12V battery.

With 20Ah capacity, 23-minute reserve capacity, sealed AGM construction, M5 terminals and trusted Fullriver DC Series engineering, the DC20-12 is a practical choice for compatible marine, caravan, standby, emergency and auxiliary power applications.

Power your 12V system with dependable Fullriver deep cycle AGM performance.