The DuraTrax
®
®
Onyx™ 210 charger is great for a wide variety
™
of applications! Charge current options of 800mA, 1.5A,
3A, and 5 amps, plus 4 to 8 cell NiCd or NiMH compatibility
makes this charger great for batteries for 1/18th to 1/8th
scale electrics, nitro receiver packs, and transmitter
batteries. A tiny built-in switching AC power supply plus DC
input capability is perfect for use at home or the track. A
custom LCD with blue backlight is great for viewing various
types of charge data in any lighting condition. A unique jack
is built-in which is handy for charging 4 to 5 cell nitro Rx
batteries or transmitter packs.
It is strongly recommended to completely read this manual before use! Damage resulting from misuse
or modifi cation will void your warranty.
INDEX
SPECIFICATIONS .......................................................... 1
SPECIAL FEATURES ..................................................... 2
IMPORTANT PRECAUTIONS ........................................ 2
GLOSSARY OF TERMS................................................. 2
RESETTING THE CHARGER ........................................6
CARE & HANDLING OF NiMH BATTERIES .................. 6
ERROR INDICATORS & TROUBLESHOOTING GUIDE .....6
5-YEAR LIMITED WARRANTY – U.S.A. & CANADA ONLY .......7
INPUT POWER .............................................................. 3
CONTROLS & CONNECTIONS ..................................... 3
DETERMING BATTERY TYPE & SPECIFICATIONS ..... 4
GETTING STARTED ......................................................4
STARTING CHARGE...................................................... 5
CHARGE COMPLETE – TRICKLE CHARGE ................ 5
VIEW DATA SCREENS .................................................. 6
SPECIFICATIONS
AC input: 110V AC 60Hz
DC input: 11 to 15V DC, built-in lead with alligator clips
Battery types: 4 to 8 NiCd or NiMH (4.8 to 9.6V)
Battery capacity range: 750 to 7500mAh
Fast charge current: 0.8A, 1.5A, 3A, 5A linear (40W)
Fast charge termination: peak detection
Fast charge safety timer: 90 minutes
Peak sensitivity: 8mV for NiCd, 4mV for NiMH
Auto-trickle current: 1/20 fast charge setting
Controls: 3 push buttons
Display type: 7-segment custom LCD with blue backlight
Audible tones: indicate start, stop, errors
* Output connections: built-in lead with standard connector, built-in jack for charging 4 or 5 cell Rx packs
or Tx packs
Protective devices: solid-state reverse polarity and current overload
Case size: 5.75" x 5.25" x 1.81" [146 x 133 x 46mm]
Weight: 19.2 oz. [543g]
* Adapter - Standard to Deans® Ultra® male available separately (GPMM3131)
* Adapter - Standard to Vendetta, MiniQuake, RS4 Battery available separately (DTXC2210)
SPECIAL FEATURES
• A tiny, lightweight built-in switching AC power supply is great for portability and cramped pit areas, yet can still deliver
up to 5 amps charge current!
• Selectable charge currents of 800mA, 1.5A, 3A, and 5 amps.
• A custom peak detection system for NiCd and NiMH batteries, with auto-trickle.
• Pushbutton controls, audible tones, and a custom LCD with backlight aid in setup and use.
• LCD shows battery voltage, charge current, time, and capacity, battery type, and more.
• A built-in jack is included for charging 4 or 5 cell NiCd or NiMH receiver batteries for nitro models – even transmitter packs!
• A DC power lead with alligator clips easily connects to many 12V DC power sources.
• Solid-state reverse polarity and current overload protection ensure trouble-free operation.
IMPORTANT PRECAUTIONS
Disconnect the battery and remove input power from the charger immediately if the charger becomes hot!!
• Do not attempt to charge incompatible types of rechargeable batteries as permanent damage to the battery and
charger could result.
• Do not use automotive type battery chargers to power the charger.
• Do not allow water, moisture or foreign objects into the charger.
• Do not block the air intake holes, which could cause the charger to overheat.
• Do not attempt to use batteries with more cells or total voltage than listed in the specifi cations.
• Do not leave the charger unattended while in use.
• Do not place the charger or battery on fl ammable surfaces or near combustible material while in use such as a carpet,
cluttered workbench, paper, plastic, vinyl, leather, and wood, inside an R/C model or full sized automobile!
• Do not overcharge batteries as permanent damage could result. Do not use a charge current that exceeds the safe
level of the battery.
• Do NOT connect the charger’s AC and DC input connectors to any power source at the same time.
• Allow the charger or battery to cool down before reconnecting.
• Always disconnect from power source when not in use.
GLOSSARY OF TERMS
Amps (A): The unit of measure for charge current.
Milli-amps (mA): A unit of measure for current, being amps (A) multiplied by 1000 and listed as “mA”. So 2.5A is the
same as 2500mA (2.5 x 1000). To convert mA to amps, divide the mA number by 1000. So 25mA is the same as 0.025A
(25 divided by 1000).
Capacity and milli-amp hours (mAh): The amount of energy a battery can store is called its capacity, which is defi ned
as how much current a battery can supply constantly over one hour of time. Most hobby batteries are rated for capacity
in “mAh” or milli-amp hours. A 650mAh battery can deliver 650mA of current for one hour (650mA x 1hr = 650mAh).
A 3200mAh battery can deliver 3200mA (3.2A) of current for one hour (3200mA x 1hr = 3200mAh), etc.
“C” rating: Capacity is also referred to as the “C” rating. Some battery suppliers recommend charge currents based on
the battery’s “C” rating. A battery’s “1C” current is the same number as the battery’s rated capacity number, but noted
in mA or amps. A 600mAh battery has a 1C current value of 600mA, and a 3C current value of (3 x 600mA) 1800mA or
1.8A. The 1C current value for a 3200mAh battery would be 3200mA (3.2A), etc.
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INPUT POWER
AC Input: For indoor use, this charger includes a built-in switching AC power supply that delivers power by connecting
the AC power cord to a common 110V AC outlet.
DC Input: This charger can be powered by a portable 12V DC power source for use at the track. On the left side of the
charger, connect the DC power cord’s alligator clips directly to the output terminals on the 12V DC power source. Always
match polarities (red lead to red “+” terminal, black lead to black “-“ terminal). To utilize the charger’s absolute maximum
power capabilities the DC power source must be capable of delivering at least 4 amps while maintaining 12 volts DC.
WARNING! Never accidentally short together the positive (+) and negative (-) input connections when
connected to 12V DC power. Failure to do so could result in permanent damage to the power source and
the charger.
This charger is rated for a maximum output power of 40 watts. Depending on certain conditions (e.g. if charge current is
set to maximum, the maximum number of cells are connected to the output, and input voltage is low), the actual current
delivered to the battery might be slightly less than the setting. This is normal.
The charger will be on at all times when connected to input power. Disconnect the charger from input power when not
in use.
CONTROL & CONNECTIONS
OUTPUT LEAD: The standard connector
is compatible with most R/C car batteries.
See the SPECIFICATIONS chart on
page 1 for a list of additional adapters for
charging battery types with different
connectors.
SETTING BUTTON: For selecting NiCd or
NiMH battery type, and the charge current
rate.
DATA BUTTON For selecting different
data to be viewed on the LCD.
START BUTTON: For starting charge.
Can also be used to stop charge.
RADIO BATTERY JACK: A unique jack is located on the front
edge of the charger, for charging of NiCd or NiMH 4 or 5 cell
receiver batteries for nitro vehicles, or even 8 cell transmitter
batteries! This jack is universal – compatible with Futaba-J,
Airtronics-Z, Hitec, JR, and Spektrum receiver battery
connectors, and BEC type connectors.
For some transmitters, opening the battery compartment and disconnecting the battery’s lead will reveal if the battery’s
own plug can be connected directly to this jack on the charger. Or, if you wish to connect the charger to a transmitter’s
built-in charge jack, check with your local retailer for the appropriate charge adapter listed below:
Part number Description
GPMM3100 BEC to Futaba® Tx Charge Jack Adapter
GPMM3101 BEC to Hitec® / Airtronics® Tx Charge Jack Adapter
GPMM3102 BEC to JR® / Spektrum® Tx Charge Jack Adapter
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