Fullriver DC120-12B Deep Cycle 12V Heavy Duty AGM Battery

Fullriver DC120-12 Deep Cycle AGM Battery – 12V 120Ah Heavy Duty

The Fullriver DC120-12 is a high-capacity 12V deep cycle AGM battery engineered for applications that demand long run time, consistent power delivery, and exceptional durability. It is an ideal choice for Boss Air Suspension auxiliary systems, vehicles running onboard air compressors, and serious 4WD touring or camping setups where dependable auxiliary power is critical.

With a substantial 120Ah capacity, the DC120-12 is designed to handle repeated deep discharge and recharge cycles, making it well suited for powering air compressors, air management systems, fridges, lighting, inverters, and off-grid accessories without compromising performance or service life.

Designed for Air Suspension & High-Load Auxiliary Systems

Air suspension systems can place sustained electrical load on a vehicle, particularly during extended compressor operation. The Fullriver DC120-12 delivers stable voltage output under load, helping ensure reliable compressor performance and consistent air management operation even during long duty cycles.

This battery is especially effective as:

• An auxiliary battery supporting Boss Air Suspension systems

• A secondary battery in dual-battery touring builds

• A dedicated power source for camping and off-road accessories

AGM Construction Built for Harsh Conditions

Manufactured using high-purity lead calcium alloy grids, full frame plates, and low-resistance glass-mat separators, the DC120-12 is designed for long cycle life and high reliability. Its sealed AGM construction makes it spill-proof, corrosion-resistant, and completely maintenance-free.

The battery also features fast recharge acceptance, allowing it to recover quickly when paired with alternators, DC-DC chargers, or solar systems—ideal for touring vehicles that see varied driving conditions.

Key Features & Benefits

• 12V deep cycle AGM battery

• High-capacity 120Ah for extended accessory run time

• Designed for repeated deep discharge and recharge cycles

• Stable voltage delivery for air suspension compressors

• Maintenance-free, sealed AGM construction

• Low self-discharge rate (approx. 2% per month at 20°C)

• Faster recharge acceptance than conventional lead-acid batteries

• High vibration resistance for off-road and touring use

Battery Specifications

• Model: DC120-12B

• Voltage: 12V

• Battery Type: AGM Deep Cycle

• Capacity: 120Ah

• Cold Cranking Amps: 760 CCA

• Terminal Type: M8

• Assembly: Left-Hand Positive (LHP)

• Dimensions: 331mm (L) × 175mm (W) × 214mm (H)

• Weight: 36.5kg

Ideal For

• Boss Air Suspension auxiliary battery setups

• Vehicles with onboard 12V air compressors

• 4WD touring and camping builds

• Dual-battery systems

• RV, marine, and off-grid power applications

If you need serious deep-cycle capacity with proven AGM reliability, the Fullriver DC120-12 is a strong choice for supporting air suspension systems and demanding auxiliary loads in real-world touring and off-road conditions.