Yuasa GYZ20L AGM Motorcycle Battery — YUAM720GZ Factory-Activated, 250 CCA & 20Ah Maintenance-Free

The Yuasa YUAM720GZ GYZ20L is a factory-activated AGM motorcycle battery that delivers reliable starting power and long-term vibration resistance for touring bikes such as the Honda GL1800 Gold Wing.

This compact, sealed Absorbed Glass Mat (AGM) battery is part of Yuasa’s high-performance GYZ series, engineered with taller plate construction and improved active materials to produce stronger cranking performance and better durability under motorcycle conditions. It arrives pre-filled, sealed and charged at the factory so it’s ready to install without handling acid or routine topping up. Designed for applications that demand steady current and resistance to shock and vibration, it balances power, maintenance-free convenience and fitment for large touring machines.

How does the GYZ20L differ from other motorcycle batteries?

The GYZ series uses taller plates and enhanced separator materials to increase plate surface area, which supports higher output and better endurance under load. While some GYZ models reach up to 500 CCA and higher amp-hour ratings, the YUAM720GZ GYZ20L is specified for a balance of compact size and dependable performance.

• Factory-activated and sealed — arrives ready to install.
• AGM construction prevents spills and eliminates refill maintenance.
• Enhanced active and separator compounds for vibration resistance.
• Smaller footprint suitable for motorcycles that require the GYZ20L form factor.

Will this battery meet my bike’s starting and accessory needs?

The YUAM720GZ delivers a steady 250 CCA at 0 °F and a rated 20 Ah at the 10-hour rate, giving adequate cranking current for large-displacement touring engines while supporting typical accessory loads. If you run extensive electronics or heated grips and luggage lights, consider your total accessory draw against the battery’s capacity and charging system.

• C.C.A.: 250 at 0 °F (−18 °C) for reliable cold starts.
• Capacity: 20 Ah at the 10-hour rate for sustained accessory support.
• Regular charge current: 2 A recommended for maintenance charging.
• Factory-charged design reduces initial setup time and handling risks.

How durable and maintenance-free is the YUAM720GZ?

Because it uses AGM separators and a valve-regulated design, the battery is nonspillable and does not require water top-ups. The construction materials are compounded for resistance to vibration and mechanical stress, helping the battery maintain performance across the typical bumps and long rides that touring bikes encounter.

• AGM technology absorbs electrolyte for a sealed, nonspillable unit.
• Valve-regulated casing prevents water loss and eliminates refilling.
• Reinforced separator and plate materials extend cycle life under vibration.
• Factory activation ensures consistent initial charge and quality control.

What are the size and fitment details for installation?

The GYZ20L is compact but built to fit motorcycles that accept the GYZ form factor. Check the physical dimensions and terminal orientation against your bike’s battery compartment and wiring harness to ensure correct fit and polarity before installation.

• Dimensions: Length 6 7/8 in (175 mm), Width 3 7/16 in (87 mm), Height 6 1/8 in (155 mm).
• Weight (with acid): 15.2 lbs — plan for handling during installation.
• Common application example: Honda GL1800 Gold Wing and F6B/F6C models (2012–2022).
• Confirm terminal layout and mounting bracket compatibility before purchase.

Who is this for: Riders who need a sealed, factory-ready battery that balances compact dimensions with dependable starting power—especially owners of large touring motorcycles like the Honda GL1800 Gold Wing. If you prefer a maintenance-free, vibration-tolerant battery that arrives fully charged and ready to install, the Yuasa YUAM720GZ GYZ20L is tailored for everyday reliability and long rides with moderate accessory loads.