Forney 52721, 52723 Owner's Manual

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52721

2 AMP TRICKLE • 6 AMP MEDIUM • BATTERY CHARGER

6 & 12 VOLT • AUTOMATIC SHUT OFF

POWER TO GET THE JOB DONE

OWNER’S MANUAL

• 2 Amp trickle charge at 6V & 12V

• 6 Amp medium charge at 12V

• Automatic operation

• Over-charging protection at 12V

• Reverse hook-up protection

• Short circuit protection

• Overheat protection

• Easy-to-read meter

• ETL certified. 5-3-1 Warranty with
"Advanced Replacement"

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Working in the vicinity of a lead-acid battery is dangerous. Batteries generate explosive gases during
normal battery operation. For this reason, it is of utmost importance that each time before using your
charger, you read this manual and follow the instructions exactly.

This unit contains or emits chemicals known to the State of California to cause cancer and birth defects or
other reproductive harm. Wash hands after handling.

SAFETY PRECAUTIONS

WARNING

1. Before you use your battery charger, be sure to
read all instructions and cautions printed on:

• Battery Charger

• Battery

• Vehicle or unit using battery

2. Use battery charger on LEAD ACID type
rechargeable batteries only, such as used in autos,
trucks, tractors, airplanes, vans, RVs, trolling
motors, etc. Charger is not intended to supply
power to low-voltage electrical system other than in
an automotive application.
WARNING: Do not use battery charger for charging
dry-cell batteries that are commonly used with home
appliances. These batteries may burst and cause
injury to persons and damage to property.

3. Use only attachments recommended or sold by
manufacturer. Use of non-recommended attachments
may result in fire, electric shock, or injury.

4. When disconnecting the battery charger, pull by
the plug not by the cord. Pulling on the cord may
cause damage to cord or plug.

5. Locate battery power cord so it cannot be stepped
on, tripped over, or subjected to damage or stress.

6. Do not operate charger with damaged cord or
plug. Have cord replaced immediately.

7. Do not operate charger if it has received a sharp
blow, been dropped, or otherwise damaged in
any way. Take it to a qualified professional for
inspection and repair.

8. Do not disassemble charger. Take it to a qualified
professional when service or repair is required.
Incorrect reassembly may result in electric shock
or fire.

9. To reduce risk of electric shock, unplug charger
from outlet before attempting any maintenance or
cleaning.

10. Do not use an extension cord unless absolutely
necessary. Use of an improper extension cord could
result in fire or electric shock. If an extension cord must
be used, make sure that:

• Pins on plug of extension cord are the same
number, size, and shape as those of plug on

charger.

• Extension cord is properly wired and in good
electrical condition.

• Wire size is large enough for AC ampere rating
of charger, as specified below:

Length of cord (feet): 25 50 100 150
AWG size of cord: 18 18 18 16

11. Always charge battery in a well ventilated area.
NEVER operate in a closed-in or restricted area
without adequate ventilation. WARNING: Risk of
explosive gas.

12. Position charger as far away from battery as DC
charger cables permit.

13. Do not expose charger to rain or snow.

14. NEVER charge a frozen battery. If battery fluid
(electrolyte) is frozen, bring into a warm area to
thaw before charging.

15. NEVER set a battery on top of charger.

16. NEVER place charger directly above battery being
charged. Gases from battery will corrode and
damage charger.

17. NEVER touch the battery clips together when the
charger is energized.

18. NEVER crank engine with charger attached to
battery. WARNING: Battery chargers get hot
during operation and must have proper ventilation.
Air needs to flow around entire charger. Do not
set on flammable items like carpeting, upholstery,
paper, cardboard, etc. Will damage leather and
melt plastic and rubber.

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PERSONAL PRECAUTIONS AND SAFETY

PREPARING TO CHARGE

1. WARNING: Wear complete eye protection and
clothing protection when working with lead-acid
batteries.

2. Make sure someone is within range of your voice
or close enough to come to your aid when you
work with or near a lead-acid battery.

3. Have plenty of fresh water and soap nearby for
use if battery acid contacts skin, clothing, or eyes.
If battery acid contacts skin or clothing, wash
immediately with soap and water.

4. Avoid touching your eyes while working with a
battery. Acid particles (corrosion) may get into
your eyes! If acid enters your eye, immediately
flood eye with running cold water for at least 10
minutes. Get medical attention immediately.

1. Make sure you have a 12 volt or 6 volt lead­acid battery and select battery charger switch
accordingly.

2. Clean battery terminals. Take care to keep
corrosion from coming in contact with your eyes.

3. If required, add distilled water in each cell until
battery acid reaches levels specified by battery
manufacturer. This helps purge excessive gas from
cells. Do not overfill. For a battery without cell
caps, carefully follow manufacturer’s recharging
instructions.

4. Study all battery manufacturer’s specific precautions,
such as removing or not removing cell caps while
charging, and recommended rates of charge.

5. Remove all personal metal items such as rings,
bracelets, necklaces, and watches when working
with a lead-acid battery. A lead-acid battery can
produce a short-circuit current high enough to weld
a ring (or the like) to metal, causing a severe burn.

6. Take care not to drop a metal tool or other metal
onto the battery. Metal may cause sparking or
short circuit the battery or another electrical
device. Sparking may cause an explosion.

7. Always operate battery charger in an open, well
ventilated area.

8. NEVER smoke or allow a spark or flame in the
vicinity of the battery or engine. Batteries generate
explosive gases!

5. Be sure area around battery is well ventilated
while battery is being charged. Gas can be
forcefully blown away by using a piece of
cardboard or other non-metallic material as a fan.

6. If necessary to remove battery from vehicle to
charge, always remove grounded terminal from
battery first. Make sure all accessories in the
vehicle are off, so as not to cause an arc.

7. A marine (boat) battery must be removed and
charged on shore. To charge it on board requires
equipment specially designed for marine use.

8. Select the proper charge rate and voltage setting