Battery Tender 5 Bank Charger - 12V @ 2A (PN 021-0133) - Manual (Page 2)

WHEN DOES THE FAN RUN?
The fan only runs whenever a charger is connected to a battery, and the charger is plugged into AC
power. The fan ensures proper ambient temperature for the charger circuitry throughout the entire charge
cycle. To avoid unnecessary risk of temperature related problems, please ensure that there is at least a 2
inch OPEN SPACE on both sides of the charger housing. This is to provide a clear air flow path for both
the fan and the vent.
IS THE BATTERY DEAD? (LIGHTS WON’T LIGHT)
If the battery is totally dead (below 3 volts) the Battery Tender
®
will not start. This is due to its internal
safety circuit. The charger safety circuit must sense more than 3 volts before it will allow the charger to turn
on. If the battery voltage is below 3 volts, the charger will not operate and the lights will not turn on.
Have the battery checked by a dealer if the battery voltage is very low. Most 12 volt lead acid batteries are
likely to be defective if their voltage is below 9 volts.
HOW LONG DOES IT TAKE TO CHARGE A BATTERY?
Both the 5 and 10 bank Battery Tender
®
s deliver 2 amps per output during the bulk charge period. For each
hour of operation, that means that this charger delivers 2 amp-hours to the battery. For example if you have a
20 amp hour capacity battery that is fully discharged, then it would take approximately 10 hours to fully
recharge.
(Amps x Hours = Amp Hours)
or stated another way:
(Charge Current x Time on Charge = Capacity Returned to the Battery)
Whenever time permits, Deltran recommends that you let the Battery Tender
®
finish charging the battery,
indicated when the green light comes on and does not flash. We make this recommendation even though the
total time required by the Battery Tender
®
to turn on the green light may be longer than you expect.
Historically, the results of laboratory and field testing have shown that this is better for the battery and that it
helps the battery achieve longer service life.
Deltran Corporation
801 International Speedway Blvd., Deland, Florida 32724
Phone (386) 736-7900 FAX (386) 736-0379
Web site: www.batterytender.com Email: [email protected]