Quick Charge OB Series User manual

O P E R A T I N G I N S T R U C T I O N S
OB, OBXU, On Board Battery Chargers
Including: OB2425GN, OB2425SJ
For Industrial Use: Designed for gel, wet cell, AGM, and Lithium Ion Batteries
Quick Charge Corp.
800 658-2841
e-mail- [e-mail]
www.quickcharge.com Made in the U.S.A Ver. 7-21

QUICK START INSTRUCTIONS:
Check that the temporary label on top of the charger marked with
the profile setting matches your battery type. If not, see the
reprogramming section.
These chargers work very simply. Once connected to batteries and
plugged into AC power, the LED will flash red for a few seconds,
then turn steady red. When the cycle is 80% complete it will turn
yellow, and finally green when cycle is complete.
If the profile is set to float the battery(s) after complete charge, the
LED will flicker green. If the profile is set to maintain after
complete charge, the cycle will end with a steady green. The LED
may also flicker when it is at the high limit of the charge cycle.
To discontinue charging, unplug AC power.
Look to the Trouble shooting section for any deviations from this.
READ COMPLETE INSTRUCTIONS BEFORE PROCEEDING

SAFETY INFORMATION AC WIRING:
Before making AC connections, refer to the requirements on the
charger ID label. If your charger is not equipped with an AC plug,
for example, a 230 volt charger, have a qualified electrician install
one.
To reduce the risk of fire, use this charger only on branch circuits
that are protected by a circuit breaker or fuse, and that are adequate
to carry the power drawn by the charger. All wiring should be in
accordance with the National Electric Code, ANSI/NFPA 70, and
all local codes and ordinances.
This battery charger must be grounded to reduce the risk of electric
shock. 117 volt chargers are equipped with a grounding type plug,
DO NOT USE THIS CHARGER ON A TWO POLE
UNGROUNDED OUTLET OR ATTEMPT TO BREAK OFF
THE GROUND PRONG FOR USE ON A RECEPTACLE OR
EXTENSION CORD NOT HAVING A GROUND.
If an extension cord must be used, make sure it is in good
condition. Use a three conductor cord no smaller than the size
being used on the charger, and keep it as short as possible. The use
of an improper extension cord could result in a risk of a fire or
electric shock. Locate all cords so that they will not be stepped on,
tripped over, or otherwise subjected to damage or stress.
230 volt chargers are shipped without a plug. Have a qualified
electrician install a properly grounded 3 wire plug.

OTHER SAFETY INFORMATION
Do not use charger if it shows signs of physical stress, or if DC
output leads or connector feel hot when used.
Do not disconnect the DC output clamps, or connector from the
batteries when the charger is on. The resulting arcing could cause
the batteries to explode. Failure to unplug AC power before
moving or driving equipment will result in damage to cords, plugs
and receptacles.
BATTERY SAFETY & CARE INFORMATION
Always wear protective eye shields and clothing when working
with batteries. Batteries contain acids which can cause bodily
harm. Do not put wrenches or other metal objects across the
battery terminal or battery top, arcing or explosion of the battery
can result. Do not wear jewelry when working around batteries,
arcing can cause severe burns. The tops of the batteries and battery
hold downs must be kept clean and dry at all times to prevent
excessive self discharge and flow of current between the battery
post and frame.
With wet cell batteries, maintain the proper electrolyte level by
adding water when necessary. Never allow the electrolyte level to
fall below the top of the battery plates. Electrolyte levels fall
during discharge and rise during charging. Therefore, to prevent
the overflow of electrolyte when charging, add water only after
the batteries have been fully charged, or just enough to cover
the plates if discharged. Old batteries require more frequent
additions of water than do new batteries.
Do not over discharge batteries. Excessive discharge can cause
polarity reversal of individual cells resulting in complete battery
failure. Re-charge batteries as soon as possible after a deep
discharge, but not if they are warm, allow a cooling down period.
Provide adequate ventilation when charging batteries. Chargers can
ignite flammable materials and vapors. Do not use near fuels,
grain, dust, solvents, or other flammables. Do not charge batteries
in excessively hot temperatures; wait till the cool of the evening.

PRE CHARGE INFORMATION:
Mount the charger in the desired location, any orientation. Allow
space for the charger to dissipate heat, it will get hot while in use.
Do not seal the charger in an air tight compartment. Do not cover
the charger with any material. NOTE: The OB models are NOT
water proof, they are water resistant. This means they cannot
withstand immersion, or continuous exposure from pressure
washers, or heavy rain.
Connect the red charge lead to battery positive, black to
negative. But before, make sure the battery pack is of the same
voltage rating of the charger. If you are unsure, count the number
of cells on the battery pack and multiply by two. This figure should
be the same as the DC voltage rating of the charger. (see ratings
label on charger) Charging a battery with a lower voltage rating
than the charger will cause damage to batteries, charger, and can
create an explosive atmosphere.
Make sure the AC cord, DC output leads, terminals,
connectors, or clamps are all in good working condition. Do not
use the charger if there are any signs of stress or damage, or if
wires are cut or have damaged insulation. Using this charger with
any of these symptoms could result in a fire, property damage, or
personal injury. Have a qualified service person make the
necessary repairs. Repairs should not be made by people who are
not qualified.
Illustration of series and parallel battery connections:
Parallel Series
When batteries are connected in
Parallel the battery amp hour
capacity is additive and the
voltage remains the same.
Example: two 180 amp hour
12 volt batteries would equal
12 volts and 360 amp hour capacity
When batteries are connected in
Series the voltage is additive and
the battery amp hour
capacity remains the same.
Example: two 180 amp hour
12 volt batteries would equal
24 volts and 180 amp hour capacity

DRIVE LOCKOUT OPTION:
If your charger has an extra pair of small wires with a connector,
spade terminals, or just bare wires, it has this option. These wires
connect to your equipment, if it has this feature. The purpose is to
disable the drive mechanism of the equipment when the charger is
plugged in so it cannot be moved and cause damage to the AC cord
and receptacle. These wires do not have to be connected for the
charger to work.
REMOTE LED OPTION:
If your charger has this option, install as shown:
REPROGRAMMING:
Disconnect the charger from the batteries, and unplug the power
cord. Remove the four bolts holding the covers on. Open the side
with the LED and remove paper insulator.

These switch setting are for those chargers with a date code of
JUN21 and older.
Definitions:
Standard deep cycling means regularly discharging your batteries
to about 50% or more.
Shallow cycling means using your batteries for short periods of
time, rarely subjecting them to a standard or deep discharge, or that
the batteries are used often, but for short periods of time, and
recharged often.
AGM are sealed batteries not requiring water, they are also
referred to as Gel many times, although not officially a Gel
battery.
Float means the charge cycle ends with the charger not turning off,
but indefinitely putting in a small current to hold the voltage to a
minimum level.
Maintain means the charger turns off at the end of the cycle, but
will monitor the batteries and turn back on should the voltage drop
to a minimum level preventing the batteries from going
completely dead. This setting is recommended for batteries left
unattended for long periods of time.

These switch settings are for those chargers with a date code of
JULY21 and newer.

Float mode versus Maintain mode:
In float mode the charger does not shut off completely, but
supplies a very small current to the charged batteries to hold them
in full charge condition. They will not be allowed to discharge at
all. Using this setting, batteries may be left unattended for weeks at
a time. However, if weeks could turn into months then the
maintain mode would be more suitable. On wet cell batteries, there
will be some water usage especially in hot weather using float
mode.
In Maintain mode the charger will shut off, but the batteries will be
maintained by way of the charger checking the batteries
periodically using a combination of time, and minimum voltage.
Use this setting for long periods of inactivity, or if it is just
preferred over float mode.
Sometimes selecting the wrong switch setting will result in under
or over charged batteries. Other times there is no, or little effect.
The worst maladjusted switch setting would be using the wet cell
setting on most sealed batteries, which will harm them fairly
quickly due to overcharging. On the other hand, many wet cell
deep cycle batteries are fine using the sealed AGM setting.
NOTE: The rest of the instructions apply to all chargers
regardless of date code
A note on particular battery brands.
US Battery, Full River, Odyssey, Northstar are brands that
benefit from longer charge cycles. When using these batteries, the
#1 switch should be ON, which lengthens the cycle.
When re-assembling charger, replace paper insulator and
reassemble, making sure not to pinch any wires in the covers.

EQUALIZATION:
When using multiple batteries in a series string, cells become
uneven during charge and discharge cycles. At least once a month
perform two charge cycles back to back, this will give a chance for
cells that are lagging behind to catch up, and is important to overall
battery performance. NOTE: This only needs to be done when
charging wet cell, or AGM batteries. Disregard if charging Lithium
batteries, or using the constant voltage setting.
TROUBLESHOOTING
Symptom Cause Corrective Action
When plugged into AC
power the LED flashes
red/green.
Connected reverse to
battery, or not connected
to battery.
Break in DC cord, or
connector.
Battery too dead to
charge.
Correct polarity, or
connect to battery.
Have a qualified person
make repair.
Replace.
When plugged into AC
power the LED does not
come on.
No AC power.
Check circuit.
Check extension cord
for breaks or damage.
When I put a volt met
er
across the output of the
charger there is no
power coming out when
I plug it in.
The charger must be
connected to a battery to
turn on.
The batteries don’t
receive a full charge. On
wet cells, the specific
gravity will not rise to a
full reading after the
charge has completed.
The charger is too small
for the battery.
The charge profile is not
set correctly.
The cycle needs more
time.
Check that the charger’s
output is about 10% of
the amp hour rating of
the battery.
Recheck the dip switch
setting. If in doubt,
contact us.
Switch, #1 switch ON.

The battery is defective Replace.
When switched on, the
LED flashes red/yellow.
Charger and battery
voltage mismatch.
Connect the charger to a
battery(s) with the same
voltage rating.
When power
ed up the
LED is solid red with a
yellow flash.
The battery is very low,
and the charger is in a
slow charge phase, or
safe mode until the
voltage rises to a safe
level before full turn on.
Leave connected, it may
take hours, but if the
voltage rises even a little
bit, it should recover,
and turn the charger full
on. (Do not allow your
batteries to deep
discharge, it is the
number one cause of
premature battery
failure.)
The charger blows it’s
fuse, or branch circuit
fuse/circuit breaker as
soon as it’s switched on.
Ch
arger is shorted.
Contact factory.
The charger blows the
branch circuit
fuse/circuit breaker a
short while after being
switched on.
The branch circuit is too
small.
Relocate charger to a
branch circuit with a
heavier rating, or
remove other loads on
the circuit.
Batteries use water, get
hot, or smell.
One or more dead cells.
Dip switch not set
correctly.
Replace batteries. If
charging in a series
string, it is best to
replace all the batteries
rather than mix new with
old.
If shallow discharging,
check that the dip switch
is not set to standard, or
extended cycle.
After a full charge, the
batteries die quickly
The batteries are
bad.
Replace

After a full charge the
LED is green with a
yellow flash
The batteries did not
reach 80% charge in 12
hours, or did not reach
minimum voltage, and
the charger timed out.
The charg
er is too small
for the batteries.
Batteries are beginning
to age.
Sometimes running a
second cycle will
achieve full charge, but
battery replacement, or a
larger charger may be
needed.
QUICK CHARGE OB Battery Chargers
“LIMITED WARRANTY”
Quick Charge Corporation warrants the OB line of chargers for three (3) years from the date of
purchase. After the warranty period, chargers returned to the factory for repair will be charged a
minimum rate of $25.00. Charger will be returned, freight and repair charges, C.O.D. unless other
arrangements have been made. This warranty covers all defects in manufacture and
performance, provided the unit is operated in compliance with manufacture’s operating
instructions.
For repairs to be made at the Quick Charge factory, a charger and/or component(s) should be
sent, freight prepaid to Quick Charge at:
Quick Charge Corp.
1032 S.W. 22nd St.
Oklahoma City, OK. 73109
Quick Charge, will at it’s option, repair or replace the charger or component in question. The
repaired item will then be returned, freight prepaid by Quick Charge. This warranty is void if the
charger or component have been altered, changed, or repaired by anyone not authorized by
Quick Charge, or if the charger or component, have been subjected to misuse, negligence, or
harsh environmental conditions. (Except those chargers designed for such conditions)
If returning the charger to the factory is not practical, replacement parts may be shipped to the
customer for field repair at no charge. On parts such as circuit boards, the customer will be
required to return the board suspected to be defective to Quick Charge, freight prepaid. If such
defective parts are not returned, the customer will be invoiced for the repair parts. Field repairs
are made at the user’s own risk. “Authorization” by Quick Charge to repair refers to maintaining
the warranty only. Quick Charge assumes no responsibility or liability for field servicing, and shall
not be responsible for incurred travel or labor charges.
Quick Charge corporation shall not in any event be liable for the cost of any special, indirect or
consequential damages to anyone, product or thing. This warranty is in lieu of all other warranties
expressed or implied. Quick Charge neither assumes nor authorizes any representative or other
person to assume for us any liability in connection with the sale of this product.