Yuasa AGM battery YTZ14S 12 V 11.8 Ah, sealed maintenance-free, model YTZ14SWC

The Yuasa AGM battery YTZ14S 12 V 11.8 Ah (model YTZ14SWC) is a sealed, maintenance-free lead‑acid battery using absorbed glass mat (AGM) technology. It delivers a nominal voltage of 12 V and a usable capacity of 11.8 Ah in a compact case designed for motorcycles, powersports vehicles and other small vehicles where dependable starting power and vibration resistance are required. The sealed construction prevents electrolyte leakage and reduces the need for routine maintenance, while the AGM design supports stable output and long shelf life during storage.

Advantages

The sealed AGM construction provides low self-discharge, leak-proof operation and improved resistance to vibration compared with conventional flooded batteries. Maintenance-free operation eliminates the need to add water, and the battery is supplied ready to install. Compact dimensions allow straightforward replacement or retrofitting in tight compartments. The design offers consistent starting performance and reliable electrical supply for accessory loads.

Suitable for (tasks / use cases)

• Motorcycle starting and on-board electrical systems
• Powersports vehicles such as ATVs, scooters and snowmobiles
• Small recreational vehicles and personal watercraft with compatible battery dimensions
• Applications requiring a sealed, maintenance-free 12 V power source with vibration tolerance

Key specifications

• Nominal voltage: 12 V
• Rated capacity: 11.8 Ah
• Battery type: Sealed AGM lead‑acid
• Maintenance: Maintenance-free, no need to add water
• Construction: Absorbed glass mat electrolyte immobilization
• Suitable orientation: Upright installation as specified by manufacturer guidance
• Typical use: Starting battery for small engines and accessory power

How to use

Install the battery following the vehicle manufacturer’s instructions for polarity, terminal connections and secure mounting. Ensure the battery is correctly oriented and terminals are clean and free from corrosion before making connections. When charging, use a charger compatible with sealed AGM batteries and follow the charger manufacturer’s settings for 12 V AGM lead‑acid cells. Avoid overcharging and deep discharge to prolong service life.

Usage recommendations

For best long-term performance, store the battery fully charged in a cool, dry place and recharge periodically during storage. Use a charger with an AGM or sealed lead‑acid profile and disconnect accessories when the vehicle is not in use for extended periods. Follow all safety instructions for handling lead‑acid batteries and recycle according to local regulations.