Can I install a mighty mule battery warmer (FM316) to a mighty mule gate system (562)?

SOURCE: Schematic for mighty mule 502, lighting hit gate

Well this is a BAD situation, because your opener was NOT grounded, you will have to replace the Circuit board, but since this damage was caused by an act of god "nature, being lightning struck" Than GTO, "mighty mule" will probably NOT replace the board leaving you to BUY new ones, which are about $100 to $200

SOURCE: I have a mighty mule gate opener model number 352

Check the STALL FORCE setting on BOTH openers, check for gate obstructions broken gate hardware. OR your limit settings have been erased, but if none are the problem that you have a broken REV COUNTER which is inside the arm

SOURCE: Mighty mule gate opener motor burned up after 2 years

Did you ever find a motor to fix the gate opener? I am looking for the same motor and would appreciate any help you can offer

SOURCE: Does anyone repair pc boards for the Mighty mule

I have used the Mighty Mule dual gate opener for 6+ years. The common failure is the relays. They are very inexpensive, less than $5 from Allied or Mouser, and easily replaced by any good electronic technician.

Might Mule will not sell the relays, only sells a reconditioned replacement circuit board for $250 - about half the cost of the whole system,

SOURCE: How to use 2 button remote for two mighty mule gate openers

Chamberlain products do not support a 318Mhz frequency that gto uses, so that remote will not work unless you get a liftmaster receiver or any other one that it uses.