Personal injury can result from battery fumes or
Batteries give off flammable fumes that can explode.
Electrolyte is an acid and can cause personal injury if it
contacts the skin or eyes.
Prevent sparks near the batteries. Sparks could cause
vapors to explode. Do not allow jumper cable ends to
contact each other or the engine. Improper jumper cable
connections can cause an explosion.
Always wear protective glasses when working with
The battery circuit is an electrical load on the charging unit.
The load is variable because of the condition of the charge in
the battery. The alternator may be damaged if both of the
following conditions occur:
The alternator is in operation.
The circuit between the battery and the alternator is
The damage can occur when the load on the battery is lost.
The lost load on the battery causes a sudden increase in the
voltage. This high voltage can damage the charging unit, the
regulator, and other electrical components.
The 4C-4911 Battery Load Tester is used to load test a battery
that does not hold a charge.
Refer to the Tool Operating Manual, SEHS9249 for instructions
on the use of the 4C-4911 Battery Load Tester. Refer to
Special Instruction, SEHS7633 for the correct procedures and
specifications for testing batteries.