Manual

975-0526-01-02 31
Installing Batteries
Charging Voltage Setpoints
The Truecharge2 Battery Charger charging process is designed to make the
battery or battery banks reach the following voltage setpoints.
Battery Qualification
The Truecharge2 Battery Charger will perform a battery qualification on
each application of AC (or DC > 9 V [for 12-volt batteries]; DC > 18 V [for
24-volt batteries]), to determine if battery banks are present and healthy.
To force a battery detection sequence,
1. Turn off AC and DC.
2. Wait approximately 20 seconds or until all lights on the charger or
remote have gone out.
3. Turn on DC.
4. Turn on AC.
The charger will then perform a battery detection.
The Truecharge2 Battery Charger charges all banks at the same time but the
bank in most need of charging is the one that receives the most 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.
Temperature Considerations
Xantrex strongly recommends that you purchase and install the optional
Battery Temperature Sensor (BTS) to protect your battery and improve
charging accuracy. Attach the BTS to the warmest battery.
If no BTS is connected, the charger defaults to the Battery Temp. selection
on the onboard display as well as on the optional remote panel.
Table 5 Charging Maximum Voltages for 12-volt chargers
Battery
Type
Absorption
(Volts)
Float (Volts) Equalization
(Volts)
Flooded 14.4 13.5 16.0
GEL 14.2 13.8 not applicable
AGM 14.3 13.4 not applicable
Lead-Calcium 15.5 13.5 16.0
Table 6 Charging Maximum Voltages for 24-volt chargers
Battery
Type
Absorption
(Volts)
Float (Volts) Equalization
(Volts)
Flooded 28.8 27.0 32.0
GEL 28.4 27.6 not applicable
AGM 28.6 26.8 not applicable
Lead-Calcium 31.0 27.0 32.0
TC2 204060 Series BattChg Owners Guide.book Page 31 Friday, July 8, 2011 11:44 AM