Schumacher TB4 User Manual
Page 9
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9
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5. Check the connectors for corrosion and clean, if necessary.
Make sure to check all three connectors: on the battery, the
charger and the vehicle.
6. Check the connectors for a tight fit. If the connection from
the charger to the battery or from the battery to the vehicle is
worn or loose, you will not get the desired results.
7. The battery may be sulfated. When a battery is left in a
discharged state (even slightly), it will begin to sulfate.
Sulfation will cause the battery to slowly lose its capacity and
eventually become useless. Have the battery checked.
8. The battery may be reaching the end of its useful life. All
batteries will eventually become too old to work properly.
How long that takes depends on many things, including
discharge levels, charge rates, ambient temperature, usage,
etc. If you suspect the battery may be reaching this point,
have it checked.
If the above solutions do not eliminate the problem or for information
about troubleshooting, call toll-free from anywhere in the U.S.A.
1-800-621-5485
7:00 am to 5:00 pm Central Time, Monday through Friday
For
REPAIR OR RETURN,
contact Customer Service at 1-800-621-5485.
DO NOT SHIP UNIT until you receive RETURN AUTHORIZATION
from Customer Service at Schumacher Electric Corporation.