11
SOLAR PANEL LED INDICATOR
Solar Panel LED Indicator:
The following describes the indicator LED light operation.
LED State Solar Controller Status
Off Insufficient power from the solar panel/Sunlight
LED Flashing
Green
Charging Mode: The solar panel is producing an output and
the Battery voltage is between 5Volts and 12.7Volts
LED Steady
Green
Charging Mode: The solar panel is producing an output and
the Battery voltage is above 12.8Volts.
WARNING: THE VEHICLES POWER PORT/CIGARETTE ADAPTER
MUST REMAIN ON (HOT) ONCE THE VEHICLES IGNITION HAS BEEN
TURNED OFF IN ORDER FOR THE BATTERY TO CHARGE. CHECK
THE VEHICLES OWNERS MANUAL FOR THIS INFORMATION
12
ADDITIONAL CHARGER INFORMATION
AUTOMATIC CHARGING AND BATTERY STATUS MONITORING: The
Battery Tender® Solar Charger is completely automatic and may be left
connected to both the solar panel and to the battery that it is charging for long
periods of time. However, it is prudent to periodically check both the battery and
the charger for normal operation during these extended charging periods.
The charger output power, voltage, and current all depend on the condition of the
battery that is being charged and the available input power from the solar panel.
Battery Tender® Solar Panels have a status light that indicates the operating
mode of the charger.
The Battery Tender® Solar Charge Panel charges up to 325mA (0.325 Amp-
Hour per hour). Therefore, a fully discharged 20 Amp-Hour battery will take
approximately 48 hours, to recharge to 80% capacity. Some large automotive or
marine, deep cycle type batteries may take several days to fully recharge.
Please note this condition assumes full sunlight and optimal tilt angle
.
SPECIAL FEATURES: The Battery Tender ® Solar Panel has the following
special features:
BATTERY BACK FEED PROTECTION: The Solar panel has a special circuit
that prevents your battery from back charging into the Solar panel and draining
your battery.
WORKING WITH A DEAD BATTERY OR A BATTERY WITH A VERY LOW
VOLTAGE: If a 12 Volt, Lead-Acid battery has an output voltage of less than 9
volts when it is at rest, when it is neither being charged nor supplying electrical
current to an external load, there is a good chance that the battery is defective.
As a frame of reference, a fully charged 12-Volt, Lead-Acid battery will have a
rest-state, no-load voltage of approximately 12.9 volts. A fully discharged 12-
Volt, Lead-Acid battery will have a rest-state, no-load voltage of approximately
11.4 volts. That means that a voltage change of only 1.5 volts represents the full
range of charge 0% to 100% on a 12-Volt, Lead-Acid battery. Depending on the
manufacturer, and the age of the battery, the specific voltages will vary by a few
tenths of a volt, but the 1.5-volt range will still be a good indicator of the battery
charge %.
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