Fullriver DC105-12 Deep Cycle AGM Battery – 12V Heavy Duty General Purpose

Fullriver HGL / DC105-12 Deep Cycle AGM Battery – 12V Heavy Duty General Purpose

The Fullriver HGL (DC Series) AGM battery is a robust, high-capacity 12V valve-regulated lead acid (VRLA) battery designed for applications that demand reliable, stable power delivery and long service life. For vehicles running Boss Air Suspension, onboard air compressors, and auxiliary electrical systems, this battery is an excellent solution where durability and consistent output matter more than sheer cranking power alone.

Built using Absorbent Glass Mat (AGM) technology, the HGL/DC Series delivers dependable performance in both standby and cycling applications, making it well suited to auxiliary battery setups, compressor support, air management systems, and touring or camping power needs.

Ideal for Air Suspension & Auxiliary Power Systems

Air suspension systems rely on a steady electrical supply during repeated compressor cycles, especially when operating as part of a dual-battery setup. The Fullriver HGL/DC Series battery is designed to handle repeated discharge and recharge cycles, providing stable voltage to compressors, solenoids, air management controllers, fridges, lighting, and inverters.

With strong reserve capacity and excellent cycle life, it’s particularly well suited for:

• Boss Air Suspension auxiliary batteries

• Vehicles with onboard 12V air compressors

• 4WD touring and camping builds

• Canopy, tray, and RV-style installations

Built for Longevity & Harsh Conditions

Manufactured using 99.994% pure virgin lead and thick internal plates, the HGL/DC Series is engineered for long life and resistance to vibration and shock. The battery is fully sealed, non-spillable, and maintenance-free, making it suitable for installation in engine bays, battery trays, or enclosed compartments—including inside the vehicle cabin when required.

AGM construction also enables faster recharge acceptance, allowing the battery to recover quickly when paired with alternators, DC-DC chargers, or solar systems.

Flexible & Safe Installation

Unlike conventional flooded batteries, AGM batteries do not off-gas under normal operation and can be mounted in almost any orientation (excluding upside down). This flexibility makes the HGL/DC Series ideal for custom builds where space and mounting options are limited.

Key Features & Benefits

• 12V AGM (VRLA) battery for general and auxiliary applications

• High cycle life – approx. 800 cycles at 50% depth of discharge

• Fast recharge capability thanks to low internal resistance

• Excellent vibration and shock resistance

• Maintenance-free, sealed, non-spillable design

• Low self-discharge (under 3% per month at 25°C)

• Safe for enclosed and in-cabin installations

Battery Specifications

• Voltage: 12V

• Group Size: 27

• Capacity:

  • 86Ah @ 5hr rate

  • 105Ah @ 20hr rate

  • 115Ah @ 100hr rate

• Cold Cranking Amps: 680 CCA

• Cranking Amps (CA/MCA): 820

• Reserve Capacity:

  • 175 minutes @ 25A

  • 43 minutes @ 75A

• Terminal Type: M8 + TP08

• Dimensions: 307mm (L) × 169mm (W) × 215mm (H)

• Weight: 30.6kg

Ideal For

• Boss Air Suspension auxiliary battery setups

• Onboard 12V air compressors and air management systems

• 4WD touring and camping vehicles

• RV, canopy, and off-grid power systems

• Applications requiring long run time and battery longevity

If you’re building a reliable auxiliary power system to support air suspension and accessories, the Fullriver HGL / DC Series AGM battery delivers the durability, capacity, and long-term performance needed for demanding vehicle builds.