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The Onyx 235 charger is great for a huge range of charging and balancing needs for electric on-road, off-road, boat and
radio applications! Charge currents up to 8 amps and output voltages for charging up to 10-cell NiMH or 4S LiPo packs
make it equally as useful for 1/32 scale micros as large as 1/8 scale electrics, plus nitro receiver packs and transmitter
batteries. A built-in balancer optimizes charging of lithium packs, including LiFe cells such as LiFeSource
built-in jack is perfect for charging radio batteries. A USB jack allows for charging of music players, cell phones, etc. while
at the track. AC/DC flexibility with detachable input cords, reversed backlit LCD, simple controls and menus make it super-
easy to use anytime, indoors or out.
It is strongly recommended to completely read this manual before use! Damage resulting
from misuse or modification will void your warranty.
WARNING!! Charging lithium-based rechargeable batteries poses a risk of FIRE! NEVER
treat lithium-based batteries in the same manner as other battery types. NEVER leave lithium
batteries unattended while being charged! ALWAYS charge lithium-based batteries in a fireproof
location! Failure to follow all care and handling instructions contained in this manual could
result in quick, severe, permanent damage to the batteries and all surroundings!! Follow all
safety precautions when using such batteries, as listed on page 3 of this manual!
INDEX
Specifications and Features . . . . . . . . . . . . . . . . . . . . . . . 2
Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Glossary of Terms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Input Power. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Controls and Connections . . . . . . . . . . . . . . . . . . . . . . . . 4
Battery Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Getting Started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Adjustable Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
User Setup Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
™
View Data Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Battery Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Starting Charge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Charge Complete . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Care and Handling of Batteries. . . . . . . . . . . . . . . . . . . . 10
Battery Storage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Cooling Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Error Messages and Troubleshooting . . . . . . . . . . . . . . . 11
DTXP4236
INSTRUCTION
MANUAL
®
™
brand packs. A
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Summary of Contents for Duratrax ONYX 235
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Page 1: Table Of Contents
® The Onyx 235 charger is great for a huge range of charging and balancing needs for electric on-road, off-road, boat and radio applications! Charge currents up to 8 amps and output voltages for charging up to 10-cell NiMH or 4S LiPo packs make it equally as useful for 1/32 scale micros as large as 1/8 scale electrics, plus nitro receiver packs and transmitter batteries. -
Page 2: Specifications And Features
SPECIFICATIONS AC input: 110V AC 60Hz – 240V 50Hz, detachable cord, 50W DC input: 11– 15V DC, detachable DC cord with insta-gator clips, 70W Battery types: 1– 10 NiCd or NiMH (1.2 – 12.0V) 1– 4 LiPo, Li-Ion, or LiFe (3.7– 14.8V) Battery capacity range: 50-9900mAh Fast charge current:... -
Page 3: Precautions
IMPORTANT PRECAUTIONS Disconnect the battery and remove input power from the charger immediately if the charger or battery 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. -
Page 4: Controls And Connections
CONTROLS AND CONNECTIONS CHANGE / START (left): For starting a charge, 12V DC Input or to change settings. 110V AC Input (+): For moving up through menus, or Micro USB increasing the values of settings on-screen. (–): For moving down through menus, or decreasing the values of settings on-screen. -
Page 5: Battery Types
1. Connect the charger to input power. “DuraTrax Onyx 235” will be displayed on the LCD. 2. The “START” screen will automatically follow after the DuraTrax Onyx 235. The top line of this screen will show which of the ten memories is active (0–9). All settings for this memory will scroll across the bottom line of this screen. If these settings match your battery and needs, skip to the BATTERY CONNECTION section. - Page 6 b. For NiCd and NiMH batteries, refer to the chart here for NiCd & NiMH Only recommended currents, based on the size of your battery Max. Charge Capacity Chart shown in the left column. NOTE: if applying a slow charge to Battery's Rated 110% 130%...
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Page 7: User Setup Screens
Such packs SHOULD be charged with a LiPo charger that is capable of balancing, such as the Onyx 235. NON-BALANCED packs are wired so the charger can only detect the voltage of the entire pack (not individual cells), so there is only one charge lead. -
Page 8: Starting Charge
4. To balance a LiPo battery during charge, connect the balance board adapter that matches your battery’s balance connector to the charger’s balancing jack (above left). The red wire will always be on the left. Then connect the battery’s balance lead to the balancing board. Lastly, connect the battery’s main power lead to the adapter connected to the charger’s banana jacks (note proper polarity, shown above right). -
Page 9: Charge Complete
CHARGE COMPLETE When the charger has determined that the battery is full and fast charge ends, audible tones will sound for about 10 seconds and a new set of screens will show final results of the charge process like below: Charge COMPLETE COMPLETE... -
Page 10: Care And Handling Of Batteries
CARE AND HANDLING OF LiPo, Li-Ion, and LiFe BATTERIES WARNING!! DO NOT try to charge lithium-polymer (LiPo) or lithium-ion (Li-Ion) or LiFe cells in the same way as other battery types! Always read the instructions that are included with your lithium batteries carefully before use. -
Page 11: Error Messages And Troubleshooting
If there is damage stemming from these causes within the stated warranty period, DuraTrax will, at its option, repair or replace it for a service charge not greater than 50% of its then current retail list price. - Page 12 ®...
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