Mighty Max Battery ML-U1 200CCA Battery for Toro Time Cutter SS4225 Zero-Turn Lawn Mower

What It Is

The Mighty Max Battery ML-U1 is a 12V, 200CCA (cold cranking amps) sealed lead-acid battery designed to replace the OEM battery in zero-turn mowers like the Toro TimeCutter SS4225. It provides the cranking power needed for the engine start and runs the mower’s electrical system.

Fitment & Compatibility

• Model check: Direct fit for Toro TimeCutter SS4225 (model 74799/74800). Also fits many other Toro TimeCutter and Z-Master models with U1 battery trays.
• Dimensions: 7.68" L x 5.16" W x 5.13" H – measure your current battery tray to confirm clearance.
• Terminals: Standard U1 posts (positive left-facing when terminals are toward you). Verify your cable orientation matches.
• CCA rating: 200CCA meets or exceeds OEM spec (typically 170–190CCA). Higher CCA helps in cold starts but isn’t necessary for warm climates.
• OEM vs aftermarket: This is an aftermarket battery. It’s not Toro-branded but uses the same form factor and specs.

Key Things to Know

• Sealed & maintenance-free – no water refilling needed; spill-proof for zero-turn tilt.
• Installation is straightforward – remove two bolts, swap cables (red to positive, black to negative), secure hold-down bracket. Takes about 10 minutes.
• Common gotcha: The battery may arrive partially charged. Charge fully before first use if voltage reads below 12.6V. Use a standard 2-amp charger to avoid overcharging.
• Warranty: 1-year replacement from Mighty Max. Some users report shorter lifespan (2–3 years) compared to OEM, especially in hot climates.

Should You Buy It

If you need a reliable, budget-friendly replacement for your Toro TimeCutter SS4225 and don’t want to pay $80+ for an OEM battery, this is a solid choice. It’s best for DIY owners who can handle a simple swap and don’t require a premium AGM battery. Avoid if you want a longer warranty or need a maintenance-free battery that handles extreme heat regularly.