USER’S MANUAL PAGE 19
WBC-250
VOLTAGE TESTER AND CHARGER
NOTE:
When waiting for cranking or after cooling down, if battery voltage is
lower than 14.5V (for a 12V battery), charger will provide maximum 10A to
charge the battery. When battery voltage reaches to 14.5V (whether STD or
AGM or GEL battery type), the output current reduces to 0 and CHARGED/
MAINTAINING LED is lit.
When first turned on, the unit operates only as a tester, not as a charger.
Selecting a charge rate activates the battery charger and deactivates the
tester. To change the battery charger back to a tester, press the RATE SE-
LECTION/ENGINE START button until OFF is displayed, and press the DIS-
PLAY button and let the VOLTAGE LED illuminate to show battery voltage.
NOTE:
The battery tester is only designed to test batteries. Testing a device
with a rapidly changing voltage could yield unexpected or inaccurate results.
ALTERNATOR CHECK
1. With the charger unplugged from the AC outlet, connect the charger to
the battery, following the instructions given in previous sections.
3. Cool Down
- After cranking, the charger enters a mandatory 240
seconds cool down state (Pressing any button does NOT work). The
digital display indicates the remaining cool down time in seconds. It
starts at 240 and counts down to 0. After 4 minutes, the digital display
will change from displaying the countdown to displaying
RDY
.
