Mighty Mule FM600 Battery, 12 Volt, 7.0 Amp Hr.
The Mighty Mule FM600 or Mighty Mule FM150 is the replacement battery for the following Mighty Mule gate openers as well as most GTO/PRO Operators. Each battery is 12 Volt, 7 amp-hour. This maintenance-free battery is the only battery approved for use with the gate operators listed. Life expectancy is 3-5 years.