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7. 

FOLLOW THESE STEPS WHEN BATTERY IS OUTSIDE VEHICLE.

A SPARK NEAR THE BATTERY MAY CAUSE A 

BATTERY EXPLOSION. TO REDUCE THE RISK 

OF A SPARK NEAR THE BATTERY:
7.1 

Check the polarity of the battery posts. The 

POSITIVE (POS, P, +) battery post usually has a 

larger diameter than the NEGATIVE (NEG, N, -) post.

7.2 

Attach at least a 24-inch (61 cm) long 6-gauge (AWG) (13 mm

2

) insulated battery cable 

to the NEGATIVE (NEG, N, -) battery post.

7.3 

Connect the POSITIVE (RED) charger clip to the POSITIVE (POS, P, +) post of the battery.

7.4 

Position yourself and the free end of the cable you previously attached to the NEGATIVE 

(NEG, N, -) battery post as far away from the battery as possible – then connect the 

NEGATIVE (BLACK) charger clip to the free end of the cable.

7.5 

Do not face the battery when making the final connection. 

7.6 

Connect charger AC supply cord to electrical outlet.

7.7 

When disconnecting the charger, always do so in the reverse order of the connecting 

procedure and break the first connection while as far away from the battery as practical.

7.8 

A marine (boat) battery must be removed and charged on shore. To charge it onboard 

requires equipment specially designed for marine use.

8. 

AC POWER CORD CONNECTIONS

RISK OF ELECTRIC SHOCK OR FIRE.
8.1 

This battery charger is for use on a nominal 120-volt 

circuit. The plug must be plugged into an outlet that is properly 

installed in accordance with all local codes and ordinances. The 

plug pins must fit the receptacle (outlet). 

 

Never alter the AC cord or plug provided – if it does not fit the outlet, 

have a proper outlet installed by a qualified electrician. An improper connection can 

result in a risk of an electric shock or electrocution. 

NOTE:

 Pursuant to Canadian Regulations, use of an adapter plug is not allowed in 

Canada. Use of an adapter plug in the United States is not recommended and should 

not be used.

8.2 

Recommended minimum AWG size for extension cord:

AC input rating, amperes*

AWG size of cord, Length of cord, feet (m)

At least

But less than

25 (7.6)

50 (15.2)

100 (30.5)

150 (45.6)

0

2

18

18

18

16

2

3

18

18

16

14

3

4

18

18

16

14

4

5

18

18

14

12

5

6

18

16

14

12

6

8

18

16

12

10

8

10

18

14

12

10

*If the input rating of a charger is given in watts rather than in amperes, the corresponding 

ampere rating is to be determined by dividing the wattage rating by the voltage rating - for 

example: 

1200 watts/120 volts = 10 amperes

9. 

ASSEMBLY INSTRUCTIONS

Remove all cord wraps and uncoil the cables prior to using the battery charger. 

Summary of Contents for Odyssey Ultimizer OMAX-12A-1B

Page 1: ...th Quick Disconnect Model OMAX 12A 1B Single Bank Charger Model OMAX 25A 1B Single Bank Charger Model OMAX 50A 1B Single Bank Charger Model OMAX 40AS 3B Three Bank Sequencing Charger Model OMAX 50AS 3...

Page 2: ...arger to rain or snow 1 3 Use only recommended attachments Use of an attachment not recommended or sold by Schumacher Electric Corporation may result in a risk of fire electric shock or injury to pers...

Page 3: ...nces These batteries may burst and cause injury to persons and damage to property 2 5 NEVER charge a frozen battery 2 6 NEVER overcharge a battery 2 7 Consider having someone nearby to come to your ai...

Page 4: ...THE RISK OF A SPARK NEAR THE BATTERY 6 1 Position the AC and DC cables to reduce the risk of damage by the hood door and moving or hot engine parts NOTE If it is necessary to close the hood during the...

Page 5: ...t specially designed for marine use 8 AC POWER CORD CONNECTIONS RISK OF ELECTRIC SHOCK OR FIRE 8 1 This battery charger is for use on a nominal 120 volt circuit The plug must be plugged into an outlet...

Page 6: ...e of the following settings On Indicates the charger is in charge mode Off Indicates the charger is in test mode Output Button Model OMAX 50A 1B Press this button to set the charger to one of the foll...

Page 7: ...ed to charge up to and including three 12V batteries in sequence When charging in sequence only one of the three banks is on at a time Every few minutes the charger will alternate which output is on a...

Page 8: ...e of charge The charger does not have a built in load tester As such a recently charged battery could have a temporarily high voltage due to what is known as surface charge The voltage of such a batte...

Page 9: ...harge current will be turned off until the temperature is down to a normal level The charger will then continue where it left off For best results do not place the charger in direct sunlight or enclos...

Page 10: ...due to a very large battery or a bank of batteries requiring more power than the charger can deliver in 24 hours Battery may be defective Reset the charger by unplugging the charger from the 120V AC...

Page 11: ...nnected and the charger is on but is not charging The battery is connected to a bank that is set to TEST Mode Two or more batteries are being charged in sequence Press the appropriate BANK button to s...

Page 12: ...arger It is both dangerous and damaging to a battery to force higher amperage into it than it can effectively use in recharging 16 3 When an UNKNOWN OPERATING PROBLEM arises please read the complete m...

Page 13: ...thorized retailer Manufacturer makes no other warranties including but not limited to express implied or statutory warranties including without limitation any implied warranty of merchantability or im...

Page 14: ...14...

Page 15: ...ic Corporation 801 Business Center Drive Mount Prospect IL 60056 2179 Name_______________________________________________________________ Street Address________________________________________________...

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