Delta-q RQ Series User manual

© 2021 Delta-Q Technologies Corp. All Rights Reserved.
(PN: 710-0261 Rev 1 Date: April 2021)
RQ SERIES BATTERY CHARGERS
USER MANUAL

RQ Series Battery Chargers User Manual
www.delta-q.com
Page 2 of 12
Copyright © 2021 Delta-Q Technologies Corp
TABLE OF CONTENTS
Original Safety and Operating Instructions .............................................................................................. 3
Warning............................................................................................................................................................... 3
Danger ................................................................................................................................................................ 3
Attention ............................................................................................................................................................. 4
Danger ................................................................................................................................................................ 4
Safe Operating Instructions ..................................................................................................................... 5
EMC Declaration....................................................................................................................................... 6
Models...................................................................................................................................................... 7
Mounting Instructions .............................................................................................................................. 7
Operating Instructions.............................................................................................................................. 7
Charger Interface...................................................................................................................................... 8
Charging Algorithms ................................................................................................................................ 9
Displaying the Active Algorithm ........................................................................................................................ 9
Selecting a Charge Algorithm............................................................................................................................ 9
Fault and Error Codes............................................................................................................................. 10
Identifying the Charger Part & Serial Numbers ...................................................................................... 10
Acronyms ............................................................................................................................................... 11

RQ Series Battery Chargers User Manual
www.delta-q.com
Page 3 of 12
Copyright © 2021 Delta-Q Technologies Corp
ORIGINAL SAFETY AND OPERATING INSTRUCTIONS
This manual is for the Delta-Q Technologies RQ Series Industrial Battery Chargers. Read and
comprehend this document fully before handling or working with any RQ Series battery chargers.
Important safety, operating, and installation instructions are included. As well, this manual includes a
link to a list of fault codes and error codes that help engineers take steps quickly to resolve issues.
Read this information in its entirety before using your Delta-Q Technologies charger. Save these
instructions.
For technical support, contact the manufacturer or distributor of your vehicle or machine, as their version
of this charger may require unique operating instructions. For additional product documentation, see
www.delta-q.com/resources.
Warning
Use the charger only with an algorithm that is appropriate to the specific battery type and
capacity of your product. Other usage may cause personal injury and damage. Lead acid batteries may
generate explosive hydrogen gas during normal charging. Keep sparks, flames, and smoking materials
away from batteries. If this charger is used with lithium-ion type batteries, an integrated battery
management system (BMS) must be used. The BMS must ensure that in all operating modes, the battery
cells are protected from inappropriate levels of voltage, current, temperature, and state of charge. Do not
operate the charger in a closed-in area or restrict ventilation. Never charge a frozen or non-rechargeable
battery. Observe all battery manufacturers’ precautions (e.g., maximum charge rates and if cell caps
should be removed while charging).
Danger
Risk of electric shock. Connect charger power cord to an AC outlet that has been properly
installed and grounded in accordance with all local codes and ordinances. A grounded AC outlet is
required to reduce the risk of electric shock—do not use ground adapters or modify the plug. Do not
touch uninsulated portions of the output connector or uninsulated battery terminals. Disconnect the AC
supply before making or breaking the connections to the battery. Do not open or disassemble the
charger. Do not operate this charger if the AC supply cord or DC output cord is damaged or if the charger
has received a sharp blow, been dropped, or is damaged in any way. Refer all repair work to the
manufacturer or qualified personnel. This charger is not intended for use by persons (including children)
with reduced physical, sensory or mental capabilities, or lack of experience and knowledge on electrical
systems and battery charging, unless they have been given supervision or instruction concerning use of
the charger by a person responsible for their safety. Children should be supervised to ensure they do not
play with the charger.

RQ Series Battery Chargers User Manual
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Page 4 of 12
Copyright © 2021 Delta-Q Technologies Corp
Instructions importantes concernant la sécurité
Conserver ces instructions. Ce manuel contient des instructions importantes concernant la
sécurité et le fonctionnement.
Attention
Utiliser le chargeur seulement avec un algorithme approprié au type et capacitie spécifique de
batterie. D´autres types de batteries pourraient éclater et causer des blessures ou dommages. Les
batteries au plomb peuvent produire des gaz explosifs en service normal. Ne jamais fumer près de la
batterie et éviter toute étincelle ou flamme nue à proximité des batteries. Si ce chargeur est utilisé avec
des batteries au lithium-ion, un système de gestion des batteries intégrés doit être utilisé. Le système de
gestion des batteries doit assurer que dans tous les modes de fonctionnement, les cellules de la batterie
sont protégées contre les niveaux inappropriés de tension, de courant, de température et d'état de
charge. Fournissez une ventilation adéquate du chargement. Ne jamais charger une batterie gelée ou
non rechargeable. Prendre connaissance des mesures de précaution spécifiées par le fabricant de la
batterie, p. ex., vérifier s´il faut enlever les bouchons des cellules lors du chargement, et les taux de
chargement.
Danger
Risque de décharge électrique. Ne pas toucher les parties non isolées du connecteur de
sortie ou les bornes non isolées de la batterie. Toujours connecter le chargeur à une prise de courant
mise à la terre. Déconnectez la source CA avant de faire ou défaire les connections à la batterie en
chargement. Ne pas utiliser le chargeur si le cordon d’alimentation CA est endommagé ou si le chargeur
est abîmé suite à une chute ou autre incident. Ne pas ouvrir ni désassembler le chargeur –référer toute
reparation aux personnes qualifiées. Cet appareil n’est pas destiné à un usage par des personnes (dont
les enfants) avec des facultés motrices, sensorielles ou mentales réduites, ou ayant une expérience et
des connaissances insuffisantes, à moins qu’elles sont sous la supervision ou reçoivent les instructions
sur l’utilisation de l’appareil d’un répondant garant de leur sécurité. Les enfants devraient être surveillés
afin qu’il ne jouent en aucun temps avec l’appareil.

RQ Series Battery Chargers User Manual
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Page 5 of 12
Copyright © 2021 Delta-Q Technologies Corp
SAFE OPERATING INSTRUCTIONS
•The charger contains up to 25 selectable charging algorithms stored in its internal memory to charge batteries.
These algorithms are specific to each manufacturer and model of battery. Your equipment supplier or charger
distributor is responsible for ensuring the active charge algorithm matches the battery pack charging
requirements. Contact them
withanyquestionsaboutwhichalgorithmtoselectforeachbattery pack.
•
The charger may become hot during charging. Use hand protection tosafely handle the charger when
charging.
•
To maintain safe operations, the unit automatically reduces itsoutputpower ifthe temperature rises above set
thresholds, or ifthe AC input voltage is too low.
•
Ifpower is interrupted, and then returns, the charger restarts and continues to operate without hazard to the
user, ordamagetothebatteries.
•
Unplug the charger from bothAC and DC sources when cleaning, moving, or conducting any maintenance or
repairon thecharger.Nouserserviceableparts are inside.Donotremovethecoverdueto therisk ofelectrical
shock.
•
Do not expose the charger to oil, dirt, mud, or direct heavy water spray when cleaning the vehicle or
machine.
•
All connectors between the battery charger and the battery should be regularly inspected for corrosion
and contamination as these can cause overheating and can be a fire hazard.
•
If the detachable AC input power cord set or DC output cord is damaged, do not use the charger until they are
replaced with cord sets appropriate to your region andapplication.
•
When mated with a Delta-Q Technologies sealed AC cord, the charger meets IP66 specifications, making it
dust-tight and protected againstpowerfulwaterjets.Ifacordsetwithanunsealedconnector isused,theplug
andconnector mustbeperiodicallyinspectedtoensure thecontactsarecleananddry.
o
If this charger is provided with an AC cord set and
the power plug does not match the power outlet,
contact the equipment manufacturer, distributor,
or Delta-Q Technologies for thecorrect
ACcordset
terminatingwitha3-prong
plug suitable for your
region’s grounded power outlet.
o
In North America (and other 120V AC regions), the
AC cord must be a 3-conductor ULListed/ CSA
approved detachable cord set atleast1.8min
length
(≥ 6 feet), minimum 16 AWG and rated SJT; rated
105˚C min, and terminated with 125V, 13A, or greater connector.
o
In Japan, the AC cord must bea 3-conductor PSE approved detachable ACcord set, rated 105˚C, and
terminated with 100V,
15A, or greater connector.
o
In 220-240VAC regions, the AC cord must be a 3-conductor safety-approved cord set, with 1.0mm²
conductors (min.), rated appropriately for industrial use.The cord must beterminated on oneend with a
groundingtypeinput plugappropriateforuseinthecountryofdestination; bothplugandconnector should
berated 250V,10A, orgreater.
•
Extension cords must be 3-wire cords no longer than 30m (100’) at 10 AWG or 7.5m (25’) at 16 AWG, per UL
guidelines.

RQ Series Battery Chargers User Manual
www.delta-q.com
Page 6 of 12
Copyright © 2021 Delta-Q Technologies Corp
EMC DECLARATION
This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules for the United States and the ICES Regulations for Canada. These
limits are designed to provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the interference by one or more
of the following measures: Reorient or relocate the receiving antenna. Increase the separation between
the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected. Consult the dealer or an experienced radio/TV technician for help. Class
A models of this equipment are available upon request.
Note: If a Delta-Q Technologies sealed cord with an over-molded ferrite bead is not used, a clamp-on
bead (LAIRD 28A0807-0A2 ) can be added to the AC cord to ensure Class B compliance. It should be
positioned approximately the same distance from the charger as the beads on the DC and signal cables.

RQ Series Battery Chargers User Manual
www.delta-q.com
Page 7 of 12
Copyright © 2021 Delta-Q Technologies Corp
MODELS
The RQ Series has several models:
Model
Maximum Voltage
Lead Acid
Lithium-ion
RQ0350-012
18V
6 Cell 150*- 250 Ah
3-5 Cells 150*- 250 Ah
RQ0350-024
36V
12 Cell 75*- 250 Ah
6-10 Cells 75*- 250 Ah
RQ0350-036
60V
18 Cell 50*- 250 Ah
9-16 Cells 50*- 250 Ah
RQ0350-048
72V
24 Cell 40*- 250 Ah
12-20 Cells 40*- 250 Ah
*Smaller pack sizes can be accommodated. Special testing or configuration may be required to ensure
efficiency legislation compliance. Contact Support at Delta-Q Technologies if charging smaller pack sizes.
MOUNTING INSTRUCTIONS
Robust mounting points are cast into the charger’s aluminum enclosure. At each corner are 4.5mm x 8mm
diameter slots, arranged to allow ample tolerance when mating with standoffs or pre-drilled holes in a
machine. Use M4 screws of an appropriate length to secure the charger to the intended support.
If mounting the charger on a vehicle or machine frame that may be prone to flexing, it is recommended
to mount the charger using only three of the mounting points to prevent the charger case and internal
components from being subjected to undue stress and torsional loads.
•Mount the charger securely using the mounting points.
•A bracket may need to be fabricated, particularly if there is insufficient cooling air flow.
•Do not drill holes in the charger.
OPERATING INSTRUCTIONS
•On a 120V AC input, you can connect a maximum of three (3) chargers to a single 15A circuit.
•On a 240V AC input, you can connect a maximum of four (4) chargers to a single 10A circuit.

RQ Series Battery Chargers User Manual
www.delta-q.com
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Copyright © 2021 Delta-Q Technologies Corp
CHARGER INTERFACE
1. When you plug into AC power, the AC Power Indicator illuminates solid blue to indicate AC power is present.
2. The Battery Charging Indicator has the following states:
3. The Fault/Error Indicator indicates faults and errors. Visit the Delta-Q Technologies support website at
https://support.delta-q.com and search for fault and error codes to review recommended actions.
4. The Charger button has multiple functions:
oShort Press (less than 4 seconds) shows the currently active
algorithm
.
oIt is also used to select a new
algorithm
from those loaded on the charger.
For more information, see
Selecting a Charge Algorithm
.
Solid Blue = AC power available
Slow Breathing Green = Less than 80% charged
Fast Breathing Green = More than 80% charged
Solid Green = Charge is complete

RQ Series Battery Chargers User Manual
www.delta-q.com
Page 9 of 12
Copyright © 2021 Delta-Q Technologies Corp
CHARGING ALGORITHMS
Almost every model of battery has different charging requirements and each application may add to those
requirements. Delta-Q Technologies has established over 200 charge algorithms for the most common motive
deep cycle batteries. These algorithms are designed to get the longest battery life and meet a variety of
application environments.
The algorithms are specific to each manufacturer and model of battery. Your equipment supplier or charger
distributor is responsible for ensuring the active charge algorithm matches the battery pack charging requirements.
Contact them with questions regarding the default algorithm, the other algorithms on the charger, and which
algorithm to select for each battery pack.
Displaying the Active Algorithm
There are up to 25 charge algorithms stored in the charger. Use the Charger button to display and/or change the
active charge algorithm.
Press and release the Charger button to display the active algorithm. It will be displayed twice on the GREEN LED.
(e.g., Show Active Charge Algorithm 21).
Selecting a Charge Algorithm
1. Activating Charge Algorithm Select Mode
Press and hold the Charger button until the GREEN and RED LEDs start flashing fast indicating Select Mode is
now active. The BLUE LED (AC) remains ON during this process. Once the GREEN and RED LEDs stop flashing, the
GREEN LED will flash slowly displaying the first algorithm available in the list to be selected. In this example,
Charge Algorithm 21 is the first stored algorithm. Then, the GREEN and RED LEDs flash fast again indicating the
algorithm will be displayed for the second time.
Note: If there is no user interaction, the charger will exit Select Mode five (5) seconds after displaying the
algorithm for the second time.

RQ Series Battery Chargers User Manual
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Copyright © 2021 Delta-Q Technologies Corp
2. Selecting a Charge Algorithm
With Select Mode active, press and release the Charger button to advance through the charge algorithms. Repeat
this step until the charger displays the desired algorithm. The selected charging algorithm will be displayed twice.
(e.g., Advancing from Algorithm 21 to Algorithm 13).
3. Confirming the Charge Algorithm Selection
Press and hold the Charger button for more than five (5) seconds to confirm the charge algorithm selection. The
GREEN and RED LEDs will be ON for one (1) second and then OFF for one (1) second confirming the algorithm
selection. (e.g., Confirming Charge Algorithm 13 selection).
Note: You can verify the selected algorithm by displaying the active algorithm.
FAULT AND ERROR CODES
Visit the Delta-Q Technologies support website at https://support.delta-q.com and search for fault and error
codes to review recommended actions.
IDENTIFYING THE CHARGER PART & SERIAL NUMBERS
The part & serial number label is located on the first fin on the LEFT side of the charger. The 7-digit part
number is followed by a 16-digit serial number. Use these numbers when requesting technical support.
NOTE: The bar code only contains the serial number; the part number is not included in the bar code.

RQ Series Battery Chargers User Manual
www.delta-q.com
Page 11 of 12
Copyright © 2021 Delta-Q Technologies Corp
ACRONYMS
The following table provides acronym definitions used within this guide.
Term
Definition
AC
Alternating Current
AWG
American Wire Gauge
BMS
Battery Management System
DC
Direct Current
EMC
Electromagnetic Compliance
FCC
Federal Communications Commission
HV
High Voltage
LED
Light Emitting Diode
LV
Low Voltage
SJTW
Hard Service Cord
UL
Underwriters Laboratories
V
Volt
VAC
Volts Alternating Current
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