Freedom SW 3K2K InvChg Owners Guide.book Page 58 Wednesday, October 9, 2013 1:34 PM

Battery Charging Reference

This section describes the multistage charging algorithm (formula) of the Freedom SW.

Battery Types

Freedom SW charges flooded (or wet) lead-acid, Gel, AGM (absorbed glass mat), and custom batteries.

•Flooded (or wet) batteries have removable battery caps for refilling with distilled water and testing the electrolyte.

•Gel batteries have the electrolyte in the form of a gel rather than a liquid and do not require topping up. Gel batteries are sealed and the battery caps are not removable.

•AGM (Absorbed Glass Mat) batteries are similar to gel batteries except that the electrolyte is absorbed into a fiberglass matting.

•Custom battery is configured by the dealer, factory, or service center for battery types other than those listed above.

Charge Algorithm Stages

Three-Stage charging

If three-stage charging is enabled, the Freedom SW will charge batteries in a sequence known as three-stage charging. Whenever qualified AC power is present at the inverter’s input, it passes power through to the connected load and begins charging the batteries. The charging voltage delivered to the battery depends on the battery’s:

•type setting

•temperature (by switch setting or battery temperature sensor)

•state of charge

The three automatic stages are:

•bulk

•absorption

•float

RISK OF BATTERY DAMAGE

Since the Freedom SW can only select one battery type setting for all batteries connected to its bank, do not mix battery types. All connected batteries should either be: Flooded (or wet) or Gel or AGM or Custom.

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

See Figure 32 for a graph of the three-stage charging profile.

There is a fourth stage, equalization, which is initialized manually as it is only performed occasionally and only on flooded (or wet) batteries.

 

 

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Xantrex Technology 815-3024 manual Battery Charging Reference, Battery Types, Charge Algorithm Stages, Three-Stage charging
Page 71 Page 73

815-2024, 815-2012, 815-3012, 815-3024 specifications

Xantrex Technology is a leading manufacturer of advanced power electronics, providing high-quality inverter solutions that cater to diverse applications. Among its impressive portfolio, the Xantrex models 815-3024, 815-3012, 815-2012, and 815-2024 stand out for their reliability and innovative features.

The Xantrex 815-3024 is a robust 3000W inverter designed for 24V systems. Its key feature is the True Sine Wave output, which delivers clean and stable power, making it suitable for sensitive electronics and appliances. It also incorporates an advanced inverter technology that optimizes efficiency and performance. Its compact design allows for easy installation in various setups, such as RVs, boats, and off-grid systems.

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The Xantrex 815-2012 is a 2000W inverter specifically designed for 12V systems. It shares many technological advancements with its higher-powered counterparts, including the True Sine Wave output. This makes it an ideal choice for users seeking a reliable and efficient power source for smaller loads. Additionally, the model includes built-in protection features such as overload, short circuit, and over-temperature safety measures, ensuring longevity and safe operation.

Lastly, the Xantrex 815-2024 offers similar capabilities but is tailored for 24V systems with a power output of 2000W. It is well-suited for applications where moderate power demand exists, such as solar setups and battery-based power solutions. Its compact form factor and lightweight design make it particularly appealing for mobile and temporary installations.

All of these models feature technologies that promote energy efficiency, including automatic low voltage shutdown and smart cooling systems. They boast protective features that ensure the safety and durability of the devices connected to them. With their blend of advanced technologies, reliable performance, and user-friendly interfaces, Xantrex’s 815 Series inverters provide an excellent solution for anyone in need of dependable power conversion.
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