MOONEY SECTION
VII
MODEL M20J AIRPLANE
AND
SYSTEMS DESCRIPTION
ELECTRICAL SYSTEM
ALTERNATOR
&
BATTERY
A
24-volt, 22-ampere-hour storage battery (in the tailcone) and a
70
ampere
self-rectifying alternator supply electrical power for equipment operation. The
voltlloadmeter depicts
%
of alternator output.
A
power loss in the alternator
or voltage regulator will be shown as a zero reading on the
voltlloadmeter; a
discharged battery will be indicated by a high reading on alternator output
with low bus load. The voltage regulator adjusts alternator output to current
load while maintaining a constant voltage level.
A
voltage warning light il-
luminates steadily when voltage limits are exceeded and flashes when voltage
is low.
NNNNNNN
"
CAUTION
"
NNNNNNN
Starting with an external power source should not be done
whik the battery is completely depleted.
It
will not accept the
high charge rate
from the alternator and electrical failure may
result.
REV.
0
6-12-87
ISSUED 6-2-86
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