Solar Panel and Gate Activity Chart
MM272 Installation Instructions 11
1. Determine Charging Options for Battery: Transformer OR Solar
IMPORTANT
• The Mighty Mule 272 is designed and intended for use with a 12 Volt automotive, marine or lawn tractor battery. The
battery must be placed inside a weatherproof case and located within 6' of the control box. The 8' battery harness
connects the battery to the control board.
• The battery charge is maintained by the 16 Volt transformer included OR optional solar panel(s). The transformer OR
solar panel is connected to the control board using low voltage, 16 gauge, dual conductor, multi-stranded, direct burial
wire [RB509] (page 36).
• The transformer is intended for indoor use. If the transformer can only be plugged into an outside electrical outlet, a
weatherproof cover or housing must be used.
• If your gate is more than 1000' from an AC power source, you will need to use a solar panel charging kit (minimum 10
watts) . Refer to the Solar Panels and Gate Activity Chart below.
The table and map illustrate the
maximum number of gate cycles to
expect per day in a particular area
when using from 10 to 20 watts of
solar charging power prior to the battery depleting
to a state where the unit will not function. The
gures shown are for winter (minimum sunlight)
and do not account for the use of any accessory
items.
Accessories connected to your system will
draw additional power from the battery and
will require additional solar panels.
A deep cycle marine battery is recommended for
solar and/or high trafc applications.
NOTE: UP to 250 ft. of dual conductor, 16
gauge, multi-stranded wire may be used to allow
installation of solar panels in direct sunlight.
See page 30:
10 Watt Solar Panel [FM123]
Dual Gate
Winter Ratings
Zone 1 Zone 2 Zone 3
10 Watts 8 16 26
20 Watts 14 28 38
NEVER USE TRANSFORMER AND SOLAR PANEL(S) AT THE SAME TIME!
It will damage the control board!
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