Lincoln Electric IM10157 12_24V 10A Auto HF Household Charger - Manual (Page 10)

READING AN AMMETER
The ammeter indicates the charging current being
drawn from the charger by the battery. As the battery
becomes more fully charged, the charge rate lessens.
At full charge, the ammeter will still register some
current draw (approximately 20-50% of the charger’s
output rating.
Several battery conditions can also cause the ammeter
to appear to indicate a battery near full charge, when in
fact, charging has only begun.
• Cold Battery
• Sulfated Battery
• Deeply-Discharged, Lead-Calcium Battery (many
newer automotive batteries)
WARNING
BATTERY EXPLOSION CAN INJURE, AND
CAUSE PROPERTY DAMAGE!
To reduce risk of battery explosion, check to make
sure a cold battery is not frozen. Battery explosion can
result from attempting to charge a frozen battery.
• COLD BATTERIES (temperatures lower than 32° F
or 0° C) will begin charging at a low rate of charge.
But as the battery warms up through charging, the
charge rate will increase. Then, as the battery
charges up, the charge rate will decrease normally.
• SULFATED or DEEPLY-DISCHARGED LEAD-
CALCIUM BATTERIES - Will begin charging at a
very low rate. If the battery is salvageable, the
amperage draw will increase as the plate
desulfation occurs. If the process takes more than
24 hours, the charger will shut off.
• SHORTED BATTERIES - When the battery being
charged has a short circuit, the ammeter will peg at
the high-amp end of the scale. If after 5 to 10 min-
utes of charging, the needle has not started to
move toward lower amperages, unplug the charger
and discontinue charging.
WARNING
that have 25% charge or less can easily freeze
and should be charged at once, but DO NOT CHARGE A
BATTERY THAT IS ALREADY FROZEN.
10/6/2A 12V, 6/2A 24V High Frequency Charger
B-4
OPERATION