Xantrex Truecharge 20+ Amp, Owner'S Manual, Page: 41 / 78

Equalizing Flooded Batteries
3–7
light on Truec) will light for most of the charging cycle.
Near the end of the cycle, the charging current decreases and the other
indicator lights illuminate in sequence.
The charger pauses every 15 minutes for approximately 10 seconds to
measure the battery voltage and to check for new or disconnected
batteries. It then resumes charging. You may notice an occasional
change in fan speed on Truecharge 40+ as this takes place.
After charging After charging is complete Tru enters into one of these modes:
Float mode When the Ready indicator light lights, the battery is fully
charged and ready for use. If you selected Bulk/Absorption/Float mode,
Tru is in Float mode and will maintain the battery’s charge.
Monitor mode If you selected Bulk/Absorption mode, the Ready
indicator light shows the charger is now in Monitor mode and is checking
battery voltage and elapsed time since the last charge cycle.
Recharging With either charging mode, the Tru will begin a charging cycle
21 days after the last cycle, or when battery voltage drops to below 12.5
VDC for 15 minutes or if AC power is disconnected and reconnected.
Equalizing Flooded Batteries
About Equalizing
Frequency Approximately once a month, you may wish to equalize your flooded
batteries by using the battery charger equalization mode
.
Important Equalization can damage your batteries if it is not performed properly.
Never equalize a battery more than twice a month. Always check battery
fluid level before
and after equalization. Fill batteries only with distilled
water.
Battery manufacturers' recommendations on equalization vary. Always
follow the battery manufacturer's instructions so batteries are properly
equalized. As a guide, a heavily used battery may require equalization
once a month while a battery in light duty service, only needs equalizing
every two to four months. Tru provides a high-quality charge so
batteries will not need to be equalized as often as with a lower quality
charger.