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3.5 

Read, understand and follow all instructions for the charger, battery, vehicle and any 

equipment used near the battery and charger. Study all of the battery manufacturer’s 

specific precautions while charging and recommended rates of charge.

3.6 

Determine the voltage of the battery by referring to the vehicle owner’s manual and 

make sure that the output voltage selector switch is set to the correct voltage. If the 

charger has an adjustable charge rate, charge the battery in the lowest rate first.

3.7 

Make sure that the charger cable clips make tight connections.

4. 

CHARGER LOCATION

RISK OF EXPLOSION AND CONTACT WITH 

BATTERY ACID.
4.1 

Locate the charger as far away from the 

battery as the DC cables permit.

4.2 

Never place the charger directly above the 

battery being charged; gases from the battery will 

corrode and damage the charger.

4.3 

Do not set the battery on top of the charger.

4.4 

Never allow battery acid to drip onto the charger when reading the electrolyte specific 

gravity or filling the battery.

4.5 

Do not operate the charger in a closed-in area or restrict the ventilation in any way.

5. 

DC CONNECTION PRECAUTIONS

5.1 

Connect and disconnect the DC output clips only after setting all of the charger switches 

to the “off” position (if applicable) and removing the AC plug from the electrical outlet. 

Never allow the clips to touch each other.

5.2 

Attach the clips to the battery and chassis, as indicated in sections 6 and 7.

6. 

FOLLOW THESE STEPS WHEN BATTERY IS INSTALLED IN VEHICLE.

A SPARK NEAR THE BATTERY MAY CAUSE A 

BATTERY EXPLOSION. TO REDUCE 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 charging process, ensure that the hood does not touch the metal part of 

the battery clips or cut the insulation of the cables.

6.2 

Stay clear of fan blades, belts, pulleys and other parts that can cause injury.

6.3 

Check the polarity of the battery posts. The POSITIVE (POS, P, +) battery post usually 

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

6.4 

Determine which post of the battery is grounded (connected) to the chassis. If the 

negative post is grounded to the chassis (as in most vehicles), see step 6.5. If the 

positive post is grounded to the chassis, see step 6.6.

6.5 

For a negative-grounded vehicle, connect the POSITIVE (RED) clip from the battery 

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

NEGATIVE (BLACK) clip to the vehicle chassis or engine block away from the battery. 

Do not connect the clip to the carburetor, fuel lines or sheet-metal body parts. Connect 

to a heavy gauge metal part of the frame or engine block.

6.6 

For a positive-grounded vehicle, connect the NEGATIVE (BLACK) clip from the battery 

charger to the NEGATIVE (NEG, N, -) ungrounded post of the battery. Connect the 

POSITIVE (RED) clip to the vehicle chassis or engine block away from the battery. Do 

not connect the clip to the carburetor, fuel lines or sheet-metal body parts. Connect to a 

heavy gauge metal part of the frame or engine block.

6.7 

Connect charger AC supply cord to electrical outlet.

6.8 

When disconnecting the charger, turn all switches to off, disconnect the AC cord, remove 

the clip from the vehicle chassis and then remove the clip from the battery terminal.

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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