Whisper Power Supreme WP-BC 12/100-3 User Manual page 18

18 WhisperPower Battery Charger
hour of 15.5V equalization process. Consult or follow the instruction as provided by the battery
manufacturer on how to check the battery electrolyte level and or refill with distilled or deionized
water during the 1 hour's equalization period. All cells should have similar electrolyte levels. If
distilled or deionized water is added, batteries must undergo a complete charge cycle.
The charger cannot determine when to terminate the equalization of the battery. A one-hour
timeout is set as a safety feature by requiring the user to continually re-activate it as necessary
after checking the batteries manually. During the equalization mode, the other two banks are
disabled.
Understanding the Silent Mode Function
The charger also comes with another unique 'Silent' Mode function that will change the internal
fan operation.
Mode Operation
Silent 'Auto' Mode
Tips: Use this function during nighttime or when a quiet environment is needed. Please also
note that the charging time will increase in this mode because the charger is not running
at maximum power (it is de-rated).
This function can switch to ON or OFF at any time during the charging period.
To set this function, press and hold 'SET' key for 3 seconds to execute the 'Silent' Mode. The
'Auto' icon will show on the display. To turn this function off, press and hold the 'SET' function for
3 seconds to turn off 'Silent' Mode. The 'Auto' icon on the display will turn off and the charger
current and the fan speed will return to normal.
Also; the charger will automatically depart from Silent Mode after 12 hours from being set.
Fan Operation
Normal Mode
Low speed or Fan OFF
12 V 100 A
WP-BC 12/100-3
Full Speed 100 / 60 / 40 / 20 / 10 (A)
50 / 50 / 40 / 20 / 10 (A)