Xantrex Technology TC10 - Manual (Page 6)

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charging current for a short initial part of the charge cycle. Charging
current decreases rapidly (“tapers off”) as the battery charges.
Because it delivers rated current over most of the charge cycle, your
Truecharge 10 will charge your batteries faster than many other chargers
rated at 20 amperes or more.
Wide Voltage Range Operation
Now you can give your battery a top-quality charge even when your AC
power isn’t top quality. The Truecharge 10 precisely maintains the
correct charging voltage for your battery when the AC line voltage drops
as low as 90 VAC, or rises as high as 135 VAC (200 to 260 VAC for the
international 230 VAC model). A surge protector in the Truecharge 10
protects it, and your 12-volt circuits, from surges and spikes on the AC
power line.
Selector Switch for Battery Type
The Truecharge 10 has a selector switch that allows you to set the
charger for the charging characteristics of the new sealed lead-acid “gel”
batteries, or for the charging characteristics of conventional flooded
batteries. By setting the switch correctly before you begin charging your
battery, you will be ensuring that it receives the best possible charge.
Extensive Protection Features
The Truecharge 10 will not begin delivering current until it detects that it
has been properly connected to a battery. You will have fewer worries
about accidental sparks as you make your connections to the battery. The
Truecharge 10 will not deliver current if it detects a reverse polarity
connection, a short circuit, or connection to a battery with incorrect
voltage. The Truecharge 10 will also shut down if it becomes overheated
because of inadequate ventilation.
Isolated Design
The DC battery charging circuits of the Truecharge 10 are electrically
isolated by a transformer from the AC power source circuits. This
improves your personal safety and ensures that there will be no
electrolysis problems when charging batteries on a boat.