Electrical Condition Of Battery - Schumacher 00-99-000207 Instruction Manual

9.5 ENGINE START
The ENGINE START setting provides a high current suitable for crank-assist/starting a vehicle
that will not start due to a discharged battery. Use the step-by-step instructions of the Quick Refer-
ence Guide or use the following procedure. With the rate selector switch set to a fast charge (not
boost) setting (30–60 AMP), charge battery for 5 minutes. After 5 minutes of charge, select the
ENGINE START position (50–250 AMP), set the timer to the HOLD position. Attempt to start the
engine using the ignition key.
If the engine fails to start within 3 to 5 seconds, stop cranking. Return charger to the fast charge
setting (30–60 AMP), and charge battery for another 5 minutes.
If the engine fails to start after a second or third attempt, disconnect the charger. Before replacing
the battery, use a battery tester to test it.
DO NOT attempt to start a vehicle without the battery properly installed. Damage may result to the
vehicle's electrical system.
9.6 OVERLOAD PROTECTION
The charger uses an output circuit breaker and a thermal breaker to prevent overheating and
damage to the charger and the vehicle. If after repeated starting attempts, the charger does not
indicate any output on its meter, it may be because one of the two breakers has opened. If the
output breaker opens due to excessive current, a popping noise will be heard. It will automatically
reset itself in a couple of minutes. If the thermal breaker opens, it will automatically reset itself in
about 5 to 30 minutes.
10.

ELECTRICAL CONDITION OF BATTERY

0. The state of charge of refillable-top batteries can be checked by using a hydrometer. A hydrom-
eter is a bulb-type syringe which is used to extract a small quantity of the electrolyte from each
battery cell. A float in the hydrometer barrel indicates the specific gravity of the electrolyte. This
specific gravity reading indicates the battery's state of charge at a given temperature, as shown in
the table below:
**Initial specific gravity readings vary, depending on battery type and manufacturer. Contact the
seller or manufacturer of the battery for this specification.
0.2 The state of charge of sealed-top (maintenance-free and recombination-type) batteries must be
checked with a high resolution voltage tester.
0.3 If uncertain about type of battery you will be charging, or the correct procedure for checking the
battery's state of charge, contact the seller or manufacturer of the battery.
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