Sequential 2-Stage Charging; Charging Overview - Xantrex XC1524 Owner's Manual

Sequential 2-Stage Charging

In sequential charging mode the charger will check all battery banks every 15
minutes to determine which banks are present, healthy, and in most in need of
charge. The bank most in need of charge will then be charged for the next 15
minutes.
The sequential charging mode employs the 2-stage charging algorithm. It is the
same as the 3-stage algorithm except that there is no float stage; after the absorption
stage the charger stops providing voltage and current to the battery and enters a
"rest stage". Like the 3-stage algorithm, the charger will restart the charging cycle in
the Bulk stage if the battery voltage drops below 12.5V (12 V units) or 25 V (24 V
units) for 15 minutes. After 21 days, the charger will automatically restart charging
in order to refresh the batteries.

Charging Overview

The XC Series will perform a battery detection sequence every 15 minutes, or on
reapplication of AC, to determine which battery banks are present and healthy.
If you connect a battery when AC is disconnected, the remote will not recognize it
until the unit has performed a battery detection with AC applied.
To force a battery detection sequence,
1. Turn off AC.
2. Wait approximately 20 seconds or until all lights on the charger or remote have
gone out .
3. Turn on AC.
The charger will then perform a battery detection when AC is reapplied
The charger does not charge the banks in a pre-determined sequence. The bank
most in need of charging is the one that receives the charge. For example, if Bank 1
and Bank 2 are both charged, but Bank 1 has a load and Bank 2 does not, then the
charger may rarely charge Bank 2.
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About Charging
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