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4 Operation
4.1 Charge Cycle
1. Soft Start : The charger verifies connections are good and the battery is capable of accepting a charge. Batteries with
very low voltage will be charged slowly to not harm the battery. When the battery voltage reaches 10V for 30 seconds
the charger switches to the next stage.
2. Bulk Stage : The charger uses constant current and charges the battery to 14.3 volts. When the battery holds the
voltage of 14.3 volts for 30 seconds the charger switches to the next stage.
3. Absorption Stage : The charger uses constant voltage to charge the battery until the charge current drops. At this
point the charger will switch to the next stage.
4. Float Stage : The charger finishes the charge cycle by keeping the battery at 13.3 volts for a period of time and then
moves to the next stage.
5. Maintenance : The charger monitors the battery. If the battery voltage drops below 12.8 volts or if 14 days have
passed since the last charge, the charge cycle will start automatically.
4.2 LED Indicators
RED GREEN Condition
ON
OFF
Charger is in the “Soft Start” or “Bulk Stage” and the battery is being charged. If the red
LED stays on for more than 24 hours refer to the troubleshooting section.
ON
ON
Charger is in the “Absorption Stage” and delivering constant voltage to the battery. If
the red and green light stay on for more than 24 hours refer to the troubleshooting
section.
OFF
ON
The charger has moved to the “Float Stage” and is topping off the charge to the battery
and keeping the battery ready to use. The green light indicates your battery is ready to
use. If the green light stays on when your battery is known to be low, refer to the
troubleshooting section.
OFF
OFF
No AC power to the charger, or component failure.
BLINKING
BLINKING
Blinking LEDs indicate a fault.
Figure 11 LED Indicator Operation
5 Maintenance
Periodically clean both battery terminals with baking soda and tighten all connections. No other maintenance on the
charger is required.
6 FCC Class B EMC Notice
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC
Rules. These limits are designed to provide reasonable protection against harmful interference in a commercial environment.
This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications. Operation of this equipment in a residential area is
likely to cause harmful interference, in which case the user will be required to correct the interference at their own expense.
If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a different circuit than the receiver.
Consult the dealer or an experienced radio/TV technician for help.
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