TBB Trident Manual page 9

TRIDENT battery charger maintains the correct charging voltage for your battery
when the AC line voltage drops as low as 185VAC, or raised as high as 265 VAC.
A surge protector inside protects it from surges and spikes on the AC power line.
Also, TRIDENT charger can work under 110VAC. But the output will decrease.
2.2.8 Special Silent Design
User-friendly special silent design. The fan of charger will stop working after the
charging current drop to small amount for a period of them. And it will also
automatic turn to work condition if inner temperature increased.
2.2.9 Simultaneously recharging and power design
The charger can supply DC to your DC load while charging. It will satisfy the
requirement of DC load first then balance goes to charging the batteries.
WARNING
If your DC load is voltage sensitive and did not permit high input over
14.5VDC, do not connect DC load while charging if you are charging
your FREEDOM batteries.
If you choose equalization mode, do not connect DC load.
If the ambient temperature is below 80F (26.7 ), the voltage will
increase as result of the temperature compensation. The compensate
rate is 3.3 mv/cell, please add it above the voltage you selected, then
you ll have the correct output voltage of charger.
2.2.10 Power supply choice
Easy to choose, the TRIDENT can work as a power supply by dip switch. It is meant
that the output of the battery charger is a fixed voltage. It is not meant for charging
batteries. The battery type, battery temperature, and equalize switches are all
ignored in this mode. The remote battery temperature sensor does not compensate
the voltage, but the battery over-temperature shutdown is still active.
Through this mode, the charger can output a neat DC at 13.5V.
2.2.11 Equalization charging choice