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B) Cell Types: There are many different cell types on the market.
Some cells, such as SCRC (black) deliver maximum run time but
are more sensitive in their charge procedure requirements. If they
were just run, always let these cells cool before fast charging.
These cells should be discharged fully at least once every 2 - 3
runs. Never charge them at more than 3 times the rated capacity,
except possibly just for a few minutes before running, to get an ini-
tial surge of power. Other cell types, such as SCR (red) can with-
stand charging at higher amperage. You can charge these safely
at up to 4 times the rated capacity, without significantly reducing
the cell's life. With this method, you may get slightly more power,
but less run time. Your dealer can help you determine the best
way to charge the cells you have.
START BUTTON
For normal peak charging. Pressing the start button begins the
fast charge. THe light will come on solid to indicate that a fast
charge is occurring, and that current is flowing.
VOLTS/AMPS SWITCH and METER JACKS
The charger has jacks on the back so you can connect an
external digital voltmeter to monitor the charge. Set the meter to
the 20 volt DC range. When the charger's selector switch is set to
volts, the meter will display the voltage of the battery pack. When
set to amps, the display shows the charge amps divided by 30.
(.10 volts = 3 amps.) To obtain the correct amperage figure, multi-
ply the reading by 30. The dial of the BC110L is calibrated, and
high accuracy precision electronics are used inside, so you can
use the markings on the dial for accurately setting amperage.
CHARGING FOR COMPETITION USE
A) Discharging: If you wish to get the best possible performance
out of your batteries, you will need to first discharge the pack
before charging. Fully discharging cells is one of the most effective
ways to prevent memory, power loss, and capacity loss. With P-
170, SCE, and SCRC cells, this should always be done. The pack
should first be run down in the car by normal use, the do one of
the following:
1) Place an approximately 30 ohm, 10 watt resistor across the bat-
tery pack. The resistor will cool off in about 30 minutes when the
cells fully discharge. It can then be removed and the pack allowed
to rest, preferably for at least 24 hours before charging.
2) Place a single 1 ohm 5 watt resistor across each individual cell.
This method is slightly better, as each cell then gets discharged
independently of the others, thereby assuring a fully matched dis-
charge. These resistors are available as accessories at better
hobby shops.
Note: You may notice the charger shutting off prematurely (false
peaking) when charging discharged cells. This is because the cell
voltage will go down for the first few minutes of charging (the
same as a peak), which shuts the charger off. To finish the charge,
you can restart the charger by pressing the START button if the
cells are not warm.
B) Charging: For best performance and battery life, always let the
cells cool before beginning a fast charge. If you have just run the
car, let the cells cool for about an hour before recharging. This is
critical for performance and cell life, because Ni-Cad calls do not
accept a full charge at temperatures over 80 degrees Fahrenheit.
After charging the cells, let them rest. This usually takes about 20
minutes. You may then peak charge (re-peak) them until they are
slightly warm to the touch. Let them cool fully again, then re-peak
them again at a slightly higher amperage, if desired, until they are
warm. They will then be ready to run.
PRECAUTIONS
a) The panel may become slightly warm in operation, this is normal.
b) Output adapter cables should be no more than 7 inches longer
than the original cables.
c) The metal panel is electrically live, and should not touch any
wires, batteries, or grounded automobile parts. This will cause a
short to occur and blow the fuse.
d) Do not use a fuse rated higher than 20 amps, or the charger
can be damaged.
e) Keep at least 3 feet (1 meter) away from any operating trans-
mitters to avoid erratic operation.
New Battery Warning: Brand new battery packs may exhibit
unusual voltage characteristics the first time they are fast charged.
There may be erratic voltage, and no peak causing the charger to
overcharge the batteries. For this reason, you should manually
monitor the battery for the first charge. If the battery becomes
excessively warm, take it off the charger.
TROUBLESHOOTING
• Most problems can be traced to poor or loose connections that
trip the peak detector when the wires are bumped or moved. Make
certain the charger wires are tightly connected to the battery pack.
Any connectors should be clean (use motor spray) and tight.
Alligator clips are best clipped to a piece of multi-strand flexible
wire so the teeth can sink in.
• A 12 volt battery is the best overall power supply. When using a
12 volt car battery charger or AC power supply sometimes line
surges or dropouts will cause problems.
• If the unit slow charges, but will not fast charge when you press
the start button, the output wires may be shorted or hooked up in
reverse.
• Be careful not to hook up the charger backwards as the fuse may
blow. You can replace the fuse yourself with a 15 - 20 amp unit.
• If the power supply, battery, fuse, and all connections all check
out okay and the charger either stays on or off all the time, or
blows fuses, then the MOSFET inside the charger may have been
damaged. This can happen if the unit is shorted, overheated or
connected to an improper power supply. If you wish, you may
replace the transistor yourself (Part #854).
• If it should ever be necessary to return the unit to factory for
repair, be sure to enclose a note stating the nature of the problem,
your return address, shipping instructions, and any other special
instructions. Most repairs are completed and shipped within 3
days, C.O.D. Please allow up to 2 weeks for shipping.
— LIMITED WARRANTY —
TEKIN ELECTRONICS, INC. guarantees this battery charger
to be free from factory defects in materials and workmanship for
120 days from the date of purchase, verified by sales receipt. This
warranty does not cover: suitability for specific application; compo-
nents worn by use; application of reverse or improper voltage;
tampering; misuse, or shipping. Our warranty liability shall be limit-
ed to repairing unit to our original specifications. Because we have
no control over the installation or use of this product, in no case
shall our liability exceed the original cost of the product. By the act
of using0 this battery charger the user accepts all resulting liability.
Batteries and other equipment damaged in connection with the
use of this device are not covered. We reserve the right to modify
the provisions of this warranty without notice.
Team
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Championship Electronics
940 Calle Negocio, San Clemente, CA92673 Phone: (714) 498-9518 Fax: (714) 498-6339
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