Fullriver HC20 AGM 12 Volt Battery

Dual-Purpose Power for Performance Vehicles and Motorsports

The Fullriver HC20 is part of the renowned Fullriver HC Series—built for drivers who demand uncompromising power, safety, and reliability. Featuring advanced AGM (Absorbent Glass Mat) technology, the HC20 delivers powerful cranking performance while doubling as a true deep-cycle battery. With an impressive burst of up to 680 peak cranking amps, this compact powerhouse is perfect for motorsports, high-performance street cars, 4WDs, boats, and off-road applications.

Crafted with high-purity lead and sealed in a durable ABS flame-resistant case, the Fullriver HC20 is completely spill-proof, vibration-resistant, and maintenance-free. Whether you're starting a performance engine in freezing conditions or powering auxiliary accessories, the HC20 is engineered to deliver reliable output and fast recharge times.

Key Features:

True Dual-Purpose Battery – high cranking and deep-cycle capabilities
Advanced AGM Technology – spill-proof, sealed and maintenance-free
Exceptional Cranking Power – up to 680 PHCA @ 25°C
Low Internal Resistance – rapid recharge and consistent power delivery
Low Self-Discharge – ≤ 3% per month at 25°C
Rugged ABS Flame-Resistant Case – built tough for demanding conditions
Compact Size & Lightweight – ideal for motorsport and powersports applications
Ideal for Performance, Racing, Off-Road, Marine, and Audio Systems

Specifications:

Category	Details
Nominal Voltage	12 Volt
C20 Capacity	20 Ah
C5 Capacity	17 Ah
CCA (Cold Cranking Amps)	230 A
CA/MCA (Cranking Amps)	310 A
HCA (Hot Cranking Amps)	410 A
PHCA (Pulse Cranking Amps)	680 A
Short Circuit Current	817 A
Internal Resistance	15 mΩ
Self-Discharge @ 25°C	≤ 3% per month

Mechanical Specifications:

Dimension	Value
Group Size	BT19BL-BS
Terminal Type	M6 Button Terminal
Terminal Torque	4.5 – 6.2 Nm (40 – 55 in-lbs)
Height (with terminal)	167 mm (6.57 in)
Height (case only)	167 mm (6.57 in)
Width	77 mm (3.03 in)
Length	181 mm (7.13 in)
Weight	7.0 kg (15.43 lbs)
Case Material	ABS Plastic (UL94-HB rated)

Operational Data:

Operating Temperature Range	-20°C to +50°C (-4°F to 122°F)
Cold Weather Use	Keep state of charge > 60% below 0°C (32°F)

Charging Guidelines:

Parameter	Range/Limit
Max Charge Current	25% of C20 (5 A)
Absorption Voltage	14.4V – 14.7V
Float Voltage	13.5V – 13.8V

Compact, Powerful, and Built to Perform

The Fullriver HC20 delivers dependable power where you need it most—combining the starting strength of a high-performance cranking battery with the deep-cycle durability of a backup power source. For motorsport professionals, off-road adventurers, or audio enthusiasts, it’s the smart choice when reliability, performance, and safety are non-negotiable.

Power your passion with the Fullriver HC20 AGM—engineered for the extremes.