Yuasa AGM Motorcycle Battery YTX20HL Factory-Activated YUAM720BH — 18Ah, 310 CCA, Maintenance-Free

This Yuasa H Series battery combines advanced lead‑calcium chemistry with absorbed glass mat (AGM) construction to offer stronger cold-start performance and long shelf life without the need to add water. Filled, sealed and charged at the factory, the YUAM720BH arrives ready to install and resists vibration and electrolyte loss thanks to its valve-regulated design. Its compact dimensions and 18 Ah capacity make it a direct-fit replacement for many mid‑sized bikes and utility vehicles.

How does this battery improve cold starts and reliability?

The H Series design boosts cold cranking amps by up to 30% over previous models, which helps ensure dependable starts in cooler weather or after periods of inactivity. The lead‑calcium alloy keeps specific gravity stable for longer, preserving performance during storage and use.

• 310 C.C.A. measured at 0 °F (-18 °C) for improved starting power
• Advanced lead‑calcium plates for slower self‑discharge and longer shelf life
• AGM separators that immobilize electrolyte to prevent spills and minimize vibration damage

What maintenance does the factory-activated AGM battery require?

Because the battery is factory filled, sealed and charged, routine watering is not necessary and there’s no requirement to top off electrolyte. The valve‑regulated structure reduces water loss and the AGM design keeps electrolyte contained, so the battery is essentially maintenance-free for typical powersports use.

• No refilling or acid handling required at installation
• Sealed construction limits corrosion and leakage points
• Periodic charging recommended during long storage to preserve capacity

Will this battery fit my vehicle and what are its physical specs?

The YUAM720BH follows YTX20HL dimensions used by many motorcycles and ATVs; check your owner’s manual or battery tray measurements to confirm fit. Its compact footprint and 15.1 lb weight with acid make it suitable for a range of mid‑sized machines where a YTX20HL is specified.

• Length: 6 7/8 in (175 mm); Width: 3 7/16 in (87 mm); Height: 6 1/8 in (155 mm)
• Weight with acid: 15.1 lb (approx.)
• Capacity: 18 Ah (10‑hour rate); recommended regular charge current: 1.8 A

How should I charge and store this Yuasa AGM battery?

Use a charger designed for AGM batteries and follow the manufacturer’s recommended charge rate to maintain health. Keep the battery in a cool, dry place when not in use; occasional charging during extended storage prevents deep discharge and preserves cranking ability.

• Charge with an AGM‑compatible charger at recommended current (approx. 1.8 A regular charge)
• Store partially charged in a cool, ventilated area and top up charge periodically
• Avoid prolonged storage in deeply discharged state to prevent capacity loss

Who is this for? Riders and powersports owners who need a ready‑to‑install, maintenance‑free battery that delivers strong cold‑start performance and reliable service in everyday and seasonal applications will find the Yuasa YUAM720BH YTX20HL a practical choice. It’s best for mid‑sized motorcycles, ATVs and other machines that require a sealed AGM battery with roughly 18 Ah capacity and about 310 CCA.