Schumacher 85-8100 - Manual (Page 10)

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7.3 RATE/VOLTAGE CONTROL SWITCH
The Rate/Voltage Control switch on the
upper-left controls the voltage and current.
Ensure that the voltage setting selected
matches the voltage of the battery in-
tended for charging.
Select the amperage rate that suites your
application as described below:
12 V, 60 AMP
BOOST CHARGE
CHARGE D’APPOINT
CARGA DE REFUERZO
12 V, 200 AMP
ENGINE START
DÉMARRAGE
ARRANQUE
12 V
2 AMP
OFF
ARRÊT
APAGADA
TEST / PRUEBA
12 V, 40 AMP
Rate/Voltage Control Switch
SlOW ChaRgE (Continuous)
2 AMP: For trickle-charging automotive size batteries, and slow overnight charging of low rated
batteries used in motorcycles, snowmobiles, lawn and garden tractors, etc.
FaST ChaRgE (Continuous)
40 AMP: For charging automotive style, regular and deep-cycle batteries.
BOOST ChaRgE & ENgINE STaRT (Duty Cycle)
60 AMP: For brief, high output charging. Follow BOOST CHARGE ratings (min/max, On/Off
times) on charger’s front label. Refer to Quick Reference Guide for more details.
200 AMP: For automotive engine starting/cranking assist only. Follow ENGINE START ratings
(min/max, on/off times) on charger’s label. Refer to the Quick Reference Guide and paragraph 7.4
for more details.
WARNING: At higher AMP rates, it becomes easier to boil and overcharge the battery. DO
NOT LEAVE THE CHARGER UNATTENDED. Refer to the battery manufacturer’s charging
instructions. Use the Charging Time Chart on the Table of Contents page, or the calculation
in Section 12, to determine how long to charge. DO NOT LEAVE ON BOOST CHARGE ANY
LONGER THAN NECESSARY or damage to battery will result.
7.4 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 (40 AMP), charge battery for 5 minutes. After 5 minutes of charge, select the EN-
GINE START position (200 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 (40 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.