Introduction
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Built-in Charge Formulas For the inverter to perform at the highest
level, the batteries must be charged correctly. The RS2000 has optimized
algorithms for flooded, gel, and AGM batteries.
Battery Temperature Sensor Since battery temperature is a key factor
in correct charging, the charging formula must be adjusted (automatically
and in real time) according to the actual battery temperature to ensure that
batteries are fully charged, but not overcharged. For this reason, Xantrex
has included a battery temperature sensor with your RS2000 Sine Wave
Inverter/Charger and has temperature compensated the charge formula.
Manual Equalization Over a period of time, the cells in a flooded
battery can develop uneven chemical states. This can result in a weak
(undercharged) cell which, in turn, can reduce the overall capacity of the
battery. To improve the life and performance of a non-sealed, flooded
battery, the RS2000’s multi-stage charging cycle includes a manual
equalize mode that can be used, if recommended by the battery
manufacturer.
Dead Battery Charging Another feature that the RS2000 includes is
dead battery charging. The RS2000—unlike many chargers— has the
ability to recharge batteries even if the battery voltage is very low.
Load Management The RS2000 has a built-in transfer relay that
connects AC input from the utility grid, generator, or inverter output to
your loads. Because the usual AC power sources such as campground
outlets or small generators often have limited current availability, having
the capability to manage your AC loads is extremely valuable. The
RS2000 provides a number of features to facilitate this:
• The charger is power factor corrected to use AC current as efficiently
as possible and only requires 15 amps to provide rated charger output.
Minimizing the AC current used by the charger means more current is
available for your AC loads.
• RS2000 uses a power share feature which monitors the AC load on
the system. It reduces the charge current and gives priority to the AC
load to avoid nuisance tripping of the breaker.
• Occasionally, AC input sources have low voltage. To avoid loading
these weak sources any further, the charger automatically reduces its
AC current draw as the AC voltage approaches the minimum
acceptable level.