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Mighty Mule

Model # FM150-EFK

Internet # 203642200

12-Volt Battery and Fuse Combo Kit for Automatic Gate Systems

This item has been discontinued.
The Home Depot no longer carries this specific product.

$20.97 /each




Model # FM150-EFK

Internet # 203642200

The Mighty Mule 12-Volt battery is designed for Mighty Mule Automatic Gate Operators. Maintenance free battery fits within all standard Mighty Mule control boxes. Only battery approved for the FM402, FM500, FM502 and SL2000B.

  • 12-Volt, 7-Amp/hour battery includes two additional fuses
  • Maintenance-free battery rated for a 3 - 5 year life expectancy
  • Works with all electric gate openers
  • Backed by a 12-month Mighty Mule warranty and technical support

Info & Guides

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Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Brand/Model Compatibility 
Mighty Mule Gate Openers 
Commercial/Residential Use 
Fencing Product Type 
Gate Opener Part/Accessory 
Part/accessory type 
Replacement battery 
Product Weight (lb.) 
6 lb 
Warranty / Certifications
Manufacturer Warranty 
12 Months 


Rated 4.3 out of 5 by 30 reviewers.
Rated 5.0 out of 5.0 by Works great thus far I've had the battery for about a month now and is powering my gate just fine. About the cheapest battery you can find and is small enough to hide in a weatherproof junction box. Must buy terminal connectors for the power wires though. The battery does not have nut and bolt connections. Battery is located in bottom right corner in weatherproof junction box in attached picture. I also purchased the Mighty Mule gate opener from Home Depot which is working great as well! April 22, 2014
Rated 4.0 out of 5.0 by Great bang for the buck This battery is being used to power a kayak fish finder. The size and the power it generates makes it an excellent choice at a bargain price, June 24, 2015
Rated 4.0 out of 5.0 by Good purchase product was easy to install and instructions good. October 20, 2015
Rated 4.0 out of 5.0 by security system replacement battery Used as replacement for security system. Match to last replacement. Acts as expected. May 13, 2014
Rated 5.0 out of 5.0 by Great price and factory original I have the GTO Pro SW2000SLdouble gates. The slave side was not opening. Then the gates would open 5 or 6 inches and stop, making a constant beep. I had to disconnect the master arm, just to open the gates to get out of my driveway. I called "tech support". They said that I may need a new circuit board. I couldn't afford to spend over $500, It was then that I thought about replacing the battery. I went on line only to find no name, off brands. I called a gate service tech who was listed as an approved dealer. He told me about Home Depot selling the factory GTO batteries. Thank God for honest people! I installed the new battery & the gates are working like new. December 10, 2014
Rated 5.0 out of 5.0 by Alarm battery Just what I was looking for. Local available and reasonable price. August 25, 2015
Rated 5.0 out of 5.0 by Home security system backup battery Even though it says gate security, works with my home security system Easy ordering and store delivery. April 21, 2015
Rated 5.0 out of 5.0 by Exactly what was needed! Product was exactly what was needed for the security gate. This was so much easier than trying to get from the manufacturer or a battery supplier. The price was reasonable and delivery was quick. December 31, 2014
  • 2015-11-25 T10:41:51.867-06:00
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