Mighty Max Battery ML-U1 200CCA Battery for Simplicity Regent 500 Hydrostatic Lawn Mower

What It Is

The Mighty Max Battery ML-U1 is a 200 cold cranking amp (CCA) sealed lead-acid battery designed to replace the starting battery in Simplicity Regent 500 hydrostatic lawn mowers. It powers the starter motor and supports the mower’s electrical system.

Fitment & Compatibility

• Check your mower model: This battery is specifically for Simplicity Regent 500 hydrostatic models (e.g., 2690576, 2690577). It may also fit other Simplicity/John Deere/Cub Cadet riders with a U1 group size battery tray.
• Measure your battery tray: The ML-U1 dimensions are 7.7” L x 5.1” W x 6.1” H. Verify your mower’s battery compartment can accommodate this size.
• Terminal orientation: Positive terminal is on the left when facing the battery label. Confirm your mower’s cable routing matches.
• OEM replacement: This is an aftermarket battery, not Simplicity OEM. It replaces OEM part numbers like 1734096 or 1726467, but double-check your mower’s manual for exact specs.

Key Things to Know

• 200 CCA is adequate for most residential mowers, but if your engine requires higher cranking power (e.g., in cold climates), consider a higher CCA option.
• Sealed, maintenance-free – no need to add water, and it’s spill-proof for safe installation.
• Installation is straightforward – remove old battery, clean terminals, connect red to positive and black to negative. No special tools needed.
• Battery life typically 2-4 years; store fully charged during winter to prevent sulfation.

Should You Buy It

If you own a Simplicity Regent 500 hydrostatic mower and need a reliable, budget-friendly replacement with easy installation, the Mighty Max ML-U1 is a solid choice. Its 200 CCA is sufficient for most conditions, and the sealed design saves hassle. For extreme cold or heavy use, you might want a battery with higher CCA, but for typical residential mowing, this works well.