Schumacher SC-8020A Battery Charger User Manual


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light under the following conditions.
The  CHARGED (green) LED will light if the output of the charging system
is at the normally desired level.
The CHARGING LED does not light in the alternator test mode.
The  CONNECTED LED lights if the tester detects a connection.
When the tester digital display is set to  VOLTAGE
CHARGING LEDs won’t light (it could be testing a battery or an alterna-
tor).
ALTERNATOR TESTING NOTES15.3
The alternator percent display can range from 0 to 199.
The DIGITAL  DISPLAY cannot be set to ALTERNATOR % during charg-
ing.
An  ALTERNATOR % of 0 does not indicate an ALTERNATOR output of

An  ALTERNATOR % of 199 does not indicate an Alternator Voltage
nearly twice the voltage of a normal alternator.
BATTERY PERCENT AND CHARGE TIME16.
-


used to estimate charging times.

Battery State16.1 
charged in less than a few hours. The same battery could take up to 10
hours if very weak. The battery state can be estimated by using the built-in

Battery Rating16.2 – A higher rated battery will take longer to charge than
a lower rated battery under the same conditions. A battery is rated in


Charge Rate – 16.3 The charge rate is measured in amps. This charger pro-

only. The 2A rate is for charging smaller batteries such as those used for
motorcycles and garden tractors. Such batteries should not be charged


begins at the 10A rate and increases the charge rate if it determines that
the battery can accept the 20A rate. All charging modes will decrease the
charge rate as the battery approaches maximum charge.

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