Schumacher BT-100 - Manual (Page 6)

CHARGING SYSTEM TEST
1. Connect clamps to battery for basic load test.
2. Operate engine at fast idle.
3. Note meter reading with all electrical accessories off.
It should be in green “good” band in “charging system”
scale.
4. With headlights and blower motor on high, meter
should remain in green “good” band.
5. If meter reads red band or outside the charging system
zone, trouble is indicated.
NOTE
On initial use of your Battery Tester, smoke may
develop. This is caused by the lubrication burning off
the heater coils. This will not affect the performance of
your Battery Tester and will diminish upon further use.
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