Mighty Max Battery 12V 18AH SLA/AGM Battery for DR Field & Brush Mower — Sealed, Maintenance-Free

The Mighty Max ML18-12 is a sealed 12V 18AH lead-acid (SLA/AGM) rechargeable battery built to deliver dependable starting and deep-cycle performance for DR field and brush mowers.

This battery combines a compact footprint with rugged construction to meet the power needs of outdoor equipment. UL certification and AGM spill-proof construction give safe, maintenance-free operation, while nut-and-bolt terminals and a screw kit make it easy to secure in mower battery compartments. The ML18-12 is designed for high discharge demands, wide ambient temperature ranges, and repeated charge/discharge cycles without frequent maintenance.

How will this battery perform in tough mowing conditions?

The ML18-12 is engineered for repeated high-current draws and recovery from deep discharges, making it suitable for equipment that places heavy demands on battery output. Its AGM construction keeps electrolyte contained for spill-proof operation and consistent performance in varied weather.

• High discharge rate for heavy starter loads and power tools
• AGM/sealed design resists spills and reduces maintenance
• Performs across a wide temperature range for seasonal use

What are the physical dimensions and terminal details I need to know?

The ML18-12 fits many compact mower battery bays with measured dimensions and a secure terminal design. The battery comes with screws for the nut-and-bolt terminals; no wiring harness or mounting brackets are included, so plan for any vehicle-specific fittings separately.

• Dimensions: 7.12" (L) x 3.00" (W) x 6.50" (H)
• Terminal type: nut-and-bolt hardware (screws included)
• Sold as battery plus screws only — harness and mounts not included

How easy is it to install, maintain, and charge?

Installation is straightforward: the ML18-12 can be mounted in any orientation and secured using its nut-and-bolt terminals. Because it’s a sealed AGM battery, it requires no water top-ups and minimal routine maintenance, and it tolerates vibration and shock from field use.

• Mountable in any position to fit tight compartments
• Maintenance-free—no watering or acid handling
• Rechargeable and compatible with standard SLA/AGM chargers

Who is this for?

The Mighty Max ML18-12 is aimed at owners and operators of DR field and brush mowers, small commercial outdoor equipment, and anyone needing a compact, maintenance-free 12V 18AH battery. It’s a practical choice for landscapers, grounds crews, and homeowners who want a rugged, spill-proof power source with reliable starting and good deep-cycle resilience. Backed by a full one-year warranty, it’s especially suited for applications where durability, low upkeep, and safe handling are priorities.