www.nkrowing.com.au
5
Battery Life
The life of your battery depends upon many things: the age of the battery pack, the volume and used by the coxswain
and the extent of charge. Here are some performance guidelines that should help you plan your Cox-Vox use.
• A fully charged battery will power a Cox-Vox with NO audio (volume turned all the way down) for 16 hours.
• With the volume turned all the way up, the battery can supply power for 50 minutes of continuous talk.
• Therefore, with an average volume setting and a coxswain talking less than half the time, a fully charged Cox-Vox
will provide at least two to three hours of power, and usually more.
• Having the Coxswain turn the volume down as low as possible will help prolong the battery life.
• A fully drained Cox-Vox battery requires 12 hours on charge to attain maximum capacity.
• It is not necessary to try to discharge the Cox-Vox batteries fully between charging — there is virtually no memory
effect in modern nickel cadmium batteries.
• If your Cox-Vox unit is more than three years old, the battery performance will decrease. Simply return the unit to
NK for a new battery replacement. If you would like to determine the age and/or repair history of a unit, please
send an e-mail to [email protected]
Avoid overcharging your Cox-Vox. NK chargers are current-limiting and help prevent battery damage from
overcharging. However, leaving the unit plugged in for many days or weeks (past full charge) may still cause damage.
Please be sure to unplug and store your units during your off season breaks.
A note about your CV BATTERY TEST FUNCTION.
Very early CoxVox units have a battery light test function. This test function has been deleted on later models. This
may create some confusion amongst users as they believe that their battery is fl at.
How it works.
With your CoxVox switched ON, if you switch it OFF, then switch it back ON quickly (within 10 seconds), The “BATT “
lamp will fl ash. This is just a BATT lamp test, your battery is NOT discharged.
To reset the test, turn the CoxVox OFF for longer than approx 15 seconds.
When you now turn it ON, the BATT lamp should be off.
If the battery lamp is ON, them indeed, your battery is discharged.
TROUBLESHOOTING
A Cox-Vox system consists of four major components: the Cox-Vox unit, the microphone, the wiring and the speakers.
All of these components must function for your system to work properly. If you are having a problem with your
system, the best diagnostic tool is to swap out each component, one at a time, with a working component. When the
problem disappears, you know you have pinpointed the trouble area.
Cox-Vox Will Not Take or Hold a Charge
—Is the Cox-Vox being charged correctly?
Review the “Charging” section under Maintenance above and confi rm that proper procedures are being observed
when charging the Cox-Vox.
—Is the correct charger being used?
Our chargers are rated 12VDC and 300mA and are sent to the user with a special plug attached. We recommend
that all chargers be purchased from NK, and that you do not modify a charger purchased elsewhere for use with a
Cox-Vox.
—Is the charger working?
• Is the red LED illuminated when the charger is plugged in?
• Is the charger warm? A normal charger will be very warm after less than one hour’s operation. If the charger is
not warm then it is not operating correctly. However, chargers can be warm, but
not
work properly.