Users Guide
for the WattAge Park Flyer PF-12 Charger
Thank you for choosing the PF-12 by
Wattage. This charger is designed for
packs from 150 mah to 2000 mah, 4.8V
to 14.4V. During the charge mode, the
PF-12 produces a linear charge with an
adjustable output between .250 and 2.0
amperes. After the battery reaches its
peak charge, the PF-12 switches to the
trickle charge mode where the PF-12
charges at a fixed rate of 1/10 the rate of
the current setting. To protect your in-
vestment, thePF-12 includes an internal
cooling fan to keep the charger’s tem-
perature down extending the charger’s
life. The PF-12 will peak charge almost
all commonly used Ni-Cad and Ni-Mh
batteries used in Park Fliers today.
Warnings and Cautions.
1.Neverleavethechargerunattendedwheninuse.
2. Do not allow the 12V DC input leads to touch
(short out).
3. Do not place the charger or the battery being
charged inside your full size car or other vehicle
when charging.
4. Do not set the charger on carpet or other cloth
surfaces when in use. This will interfere with the
fan and make the charger fail.
5. Do not connect the 110V A/C input and the 12V
D/C input to a power source at the same time.
6. Never charge a “hot” battery. Charging a hot
batterycan result inbattery failure andpossibly ex-
plosion. Always let the battery cool before charg-
ing.
7. If the battery or charger becomes excessively
hot, immediately disconnect the charger from the
power source and allow the parts to cool before
handling.
8. Do not short-circuit the output leads.
9. Battery damage can occur if the amperage rate
is set too high. Follow the chart and the
manufacturer’ sinstructionstopreventbatterydam-
age.
10. Always check the battery’s polarity and condi-
tion before connecting it to the charger.
11. The PF-12 is designed to charge 4 to 12 cell
(4.8V to 14.4V) battery packs only.
12.If using the PF-12to peak chargea radio trans-
mitter battery, the battery must be removed from
the transmitter before charging. Do NOT peak
charge a transmitter battery through the radio’s
charge jack.
13. The PF-12 is designed to charge nickel cad-
mium or nickel metal hydride batteries only. Do
NOT attempt to charge Alkaline, Dry Cells, Gel
Cells, Lead Acid, Lithium, or other batteries with
this charger. Damage, fire, and/or injury will re-
sult.
14. Double check all leads and adaptors for short-
circuits, open circuits, and contacts for dirty (oxi-
dized) surfaces. Faulty leads will result in poor re-
sults and/or damage
.
Quick Steps
Familiarize yourself with all partsof thecharger
before using.
1. Read the Warnings Section.
2. Connect the charger to a power source (ei-
ther 12V DC or 110V AC).
3. Set the Current to the low setting (counter
clockwise).
4. Connect the battery pack (Ni-Cad or Ni-Mh
only) to the charger. If the battery is hot, let it
cool before charging.
5. Select the Ni-Cad or Ni-Mh switch appropri-
ate for the battery being charged, and adjust
the Current Setting to a charge rate suitable for
the battery.
6. Press the start button. The Charge light will
glow solid during the peak charge.
7. Charge time will vary depending on the am-
perageselectedandthesizeof thebatterypack.
CHARGE RATES
Charging battery packs must be done in a
way that does not exceed the limitations of the bat-
tery. Our researchhasshownthatbyfollowingsome
simple rules of charging, battery packs can give, in
return, good performance while extending the lon-
gevity of the battery’s life.
Asarule,Ni-Cadbatteries, whichhavebeen used
a multiple of times, can be charged at C2 (“C”
standingfor“capacity”and“2”fortwotimesthe
battery’sindicated capacity). Thisistrue for most
Ni-Cdbatterieswhicharesmaller than a Sub-C size.
However, if the battery pack is newly assembled or
has been rematched, the charging rate should be
no higher than C1 (the battery’s indicated capacity)
for the first five charges.
Ni-Mh batteries, on the other hand, require
amoresensitiveapproachto charging. Forthe first
five charges, Ni-Mh battery packs should be
chargedat C.5. This means that thebatteryshould
be charged at a rate of half the indicated capacity of
the battery. (Ex: A 1000 mah Ni-Mh battery pack
should be charged at 500 mah for the first five
charges.) Once the initial “break in” of the bat-
tery is completed, charging should be no higher
thanC1.25ifthecellsofthe battery packaresmaller
than a Sub-C size. Due to these recommendations,
batteries having a capacity of smaller than 250 mah
should not be charged using the PF-12.
With our custom Ni-Mh peak profile in the
PF-12, small Ni-Mh battery packs will be better
charged than with most other chargers. The PF-12
carefully charges Ni-Mh batteries so they become
fully peaked without over heating the cells. Thisen-
sures that battery packs charged with the PF-12 will
have many more uses in the future than if they were
charged with conventional peak chargers.
Charge Rate Table:
Battery Capacity Ni-Cd Rate Ni-mh Rate
(in milliampere) (in Amps) (in Amps)
150 to 250 250 - .300 .75 - .25
350 to 400 .500 - .800 .175 - .500
600 .600 - 1.20 .300 - .750
700 .700 - 1.40 .350 - .875
1000 - 2000 2.00 1.00 - 2.00
battery source rather than through the cigarette
lighter.
Charge Output
The PF-12 will accept bare wires or small alligator
clips to connec the battery leads to the charger out-
put jacks.
Current Adjust Knob
Controls the current. Turning the knob clockwise
increases the current flow. Begin each charge with
the current turned down.
Battery Select
Before charging, determine whether the battery to
becharged is a Ni-Cad or Ni-Mh type, and place the
switch in the appropriate position.
Start Button
Adjust the current to low, connect the battery pack
to the output leads (not supplied), select the type of
battery to be charged (Ni-Cad or Ni-Mh), adjust the
chargecurrenttotheappropriatesetting,then press
the Start Button to begin charging.
Charge Indicator
When the charger is ready to be used, the charge
light will blink slowly. During charge, the light will
stay steady. After the battery has reached its peak,
the light will begin to blink slowly depending on the
charge rate.
Trickle
Once the battery reaches its peak charge, the PF-
12 switches to a slow charge rate of 1/10 the setting
shown on the Current Adjust Knob.
For Inquiries or Customer Service, contact us
directly:
Customer Care
18480 Bandilier Circle
Fountain Valley, CA92708
service@globalhobby.net
http://watt-age.globalhobby.com
Phone: (714) 963-0329
110V AC Input
The PF-12 can use 110V AC for a power source.
12V DC Input
The PF-12 can use a 12V DC power source. We
highly recommend connecting directly to the 12V
As Wattage/Global Hobby has no control of the final use of this product, the
user by using the product assumes all liability for the product.
We guarantee this product to be free from manu-
facturer defect or workmanship fault for 90 days
from the orginal sale date.
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