ML-U1R-CCAHR -12 Volt, 320 CCA, Nut and Bolt (NB) Terminal, Rechargeable SLA AGM High Rate Series Battery

What It Is

The ML-U1R-CCAHR is a 12-volt, 320 cold cranking amp (CCA) Sealed Lead Acid (SLA) AGM battery designed for riding lawn mowers, zero-turn mowers, and other outdoor power equipment requiring a U1R size battery. Its high-rate AGM construction delivers strong burst power for starting engines, even in cold conditions.

Fitment & Compatibility

Before buying, confirm your mower uses a U1R group size battery (typically 7.7" L x 5.1" W x 6.1" H). Check your original battery’s group size (often printed on the label). This battery has Nut and Bolt (NB) terminals—positive terminal is on the right when facing the battery (reverse polarity). Measure your battery tray to ensure it fits. It’s a direct replacement for many OEM batteries from brands like John Deere, Cub Cadet, Husqvarna, Toro, and Craftsman, but cross-reference your model number (e.g., 725-0459, 725-0479, or U1R-AGM). Not for cars or small push mowers.

Key Things to Know

• 320 CCA is strong for most residential riding mowers; check your engine’s minimum CCA requirement (usually 200-300 CCA).
• AGM design means it’s spill-proof, vibration-resistant, and maintenance-free—no water refills.
• Installation difficulty: Easy—remove old battery, clean terminals, connect red (+) to right terminal, black (-) to left. Tighten nuts securely.
• Gotcha: Ensure your charger is AGM-compatible; standard car chargers may overcharge. Also, this battery is not for deep-cycle use (e.g., electric trolling motors).

Should You Buy It

Buy this if you need a reliable, high-CCA replacement for a U1R riding mower battery that starts quickly in cold weather and requires zero maintenance. It’s a solid value at $69.98 with strong user ratings, but skip it if your equipment uses a different group size or requires a deep-cycle battery.