Xantrex Technology SW 3000 Operating in Equalization Mode, Risk of Damage to Batteries

Operating The Freedom SW 3000

When batteries are cold, their chemical reaction is sluggish, meaning they don’t absorb charge as easily. Thus a charge level optimized for room temperature will not charge the batteries sufficiently if they are cold. The charger must compensate by increasing its voltage to achieve the compensated equivalent of a room temperature charge. If the batteries are hot, the chemical reaction is hyperactive and they absorb energy too easily; thus a standard room-temperature charge would tend to overcharge a hot battery. Therefore, the charger compensates by reducing its voltage.

The BTS automatically, and in real time, makes adjustments to the charger’s voltage setpoints to properly charge your batteries. The actual charge compensation formula can be found on “Charger Specifications” on page 61.

IMPORTANT: It is normal to see a voltage that is different than the specified setpoint when charging if the battery case temperature is above or below 77 °F (25 °C).

If a BTS is not present, the Freedom SW 3000 uses the hot setting, the default value, unless the setting has been adjusted during configuration. Charging may not be effective at extreme temperatures. See “Charger Specifications” on page 61.

Operating in Equalization Mode

EXPOSURE TO CHEMICALS AND GASES HAZARD

•Make sure the area around the battery is well ventilated.

•Equalization generates explosive gases.

Failure to follow these instructions can result in death or serious injury.

RISK OF DAMAGE TO BATTERIES

•Do not equalize sealed lead-acid batteries and gel batteries.

•Only flooded (wet) lead-acid batteries should be equalized.

•Never equalize a lead-acid battery more than necessary. Always check the electrolyte level before AND after equalization. Fill with distilled water per the battery manufacturer’s recommendation.

Failure to follow these instructions can damage the unit and/or damage other equipment.

NOTES:

•Equalize mode is automatically disabled if you have selected “Gel” or “AGM” as the battery type.

•As a general rule, do not equalize a lead-acid battery unless there are provisions to add water to it and the manufacturer recommends equalization.

18 Freedom SW 3000 Owner’s Guide