Mighty Max Battery ML18-12 - 12V 18AH Earthwise Electric Lawn Mower Battery Replaces 24V Battery - 2 Pack

What It Is

This is a 2-pack of 12V 18AH sealed lead-acid (SLA) batteries designed to replace the 24V battery system in Earthwise electric lawn mowers. Each battery is wired in series to deliver 24V total power for cordless mowers.

Fitment & Compatibility

Critical check: These are 12V each, wired in series for 24V total. They will not work in mowers that use a single 24V battery (which requires a 24V SLA battery, not two 12Vs).
Physical size: Each battery measures 7.13" L x 3.03" W x 6.57" H. Measure your mower’s battery compartment before buying—these are taller than many OEM SLA batteries.
Terminals: Use F1 (0.187") or F2 (0.250") spade connectors; verify your mower’s connector type.
Brand-specific: Designed for Earthwise mowers, but may fit other brands with the same voltage and physical clearance. Check your mower’s voltage requirement (must be 24V system) and battery tray dimensions.

Key Things to Know

• Voltage mismatch risk: If your mower uses a single 24V battery, these are incompatible. Only buy if your mower explicitly takes two 12V batteries in series.
• Quality concerns: 3.2-star rating with only 8 reviews—limited feedback. Some users report shorter runtime than OEM batteries.
• Installation: Simple swap: disconnect old batteries, connect new ones in series (positive to negative between batteries), then connect to mower. No special tools required.
• Maintenance: SLA batteries degrade if fully discharged. Store charged and recharge after each use to maximize lifespan.

Should You Buy It

Only buy this if your Earthwise mower specifically requires two 12V SLA batteries in series (check your manual or existing battery specs). It’s a budget-friendly replacement for OEM batteries, but the low rating and limited reviews suggest you may get inconsistent performance. If runtime and reliability are critical, consider a higher-rated SLA battery pack from a known brand with more user feedback.