Mighty Mule R4211 Repair Service


This is a repair service for your defective Mighty Mule R4211 control board that no longer charges the battery. Fast shipping, choose your speed and we’ll send you the label.  One business day repair turn-around. Quick, cost-saving solution!

SKU: R4211 Category: Tag:


This is a repair service for your defective Mighty Mule R4211 control board. If your  FM500/502,  FM560/562,  FM600/660 gate opener is not charging the battery and does not work on ac power but otherwise continues to function normally while being powered by the battery, LYRATRONIX offers a quick, cost-saving solution. Our staff will replace the defective components that prevent it from functioning on ac power and by doing so this will allow charging to resume.

Fast shipping options with this repair

Choose your shipping speed, submit your order and a label will be sent to your email.

Fast repair turnaround

A qualified technician will repair and ship your Mighty Mule R4211 control board back to you within ONE business day. How does that sound?


This failure is caused by power surges and for this reason, we do not offer a warranty. Rest assured, you will save money (this is better than continually a new Mighty Mule R4211) and we will connect a battery to verify that it is charging before we return it to you. If you have any trouble, please contact us.


Still not convinced? Fill out our contact form here to ask additional questions.

Learn more about LYRATRONIX circuit board repair capabilities.   Learn more about Mighty Mule Gate Openers.

Additional information

Weight 1 lbs
Dimensions 9 × 6 × 2 in

Mighty Mule