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Four green lights means your battery is nearly
full (80–100% charged).
A single flashing red light means it's nearly discharged.
Light bar scaling is independently settable. As the Link 20 comes
from the factory, it is set to show a flashing red light whenever your
battery is more than 80% discharged (20% charged). The default
setting usually indicates enough energy remains with two yellow lights
showing to start an engine-driven charging source. If desired, you
may scale the light bar to show a flashing red light when your battery
is more than 40% discharged, however, this is not recommended. To
set a discharge floor other than 100%, see page 19, Function F09.
READING THE LIGHT BARS
Above the Link 20 numeric display
are two light bars, each with four
lights. They show you battery state-
of-charge at a glance.
EMPTY Symbol FULL Symbol
Percent Full
Default Optional
100% 100%
80–99.9 90–99.9
60–79.9 80–89.9
40–59.9 70–79.9
20–39.9 60–69.9
0–19.9 50–59.9
The Light Bars operate on rate-corrected amp hours. If you have heavily discharged
a battery bank, the light bar may tell you to charge before you would normally make that
decision based on the amp-hour display. See High Discharge Rates, page 26.
WE RECOMMEND: Charge your batteries when the Light Bars tell you to!
100%
floor
50%
floor