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  • How to do Battery charger Sizing?

    How to do Battery charger Sizing?

    May , 09 2022
    In this article we will discuss the La Marche method for sizing a battery charger. There are a few pieces of information that must be gathered before the charger size can be calculated. The required information is as follows: – What is the maximum load in amps? – What is the battery backup time needed? – What is the required recharge time? – What is the battery type (Lead acid or Ni-Cad) and the n...
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  • DC-DC Converters-A suitable alternative to battery chargers

    DC-DC Converters-A suitable alternative to battery chargers

    May , 09 2022
    What if you had all the power you wanted or needed at 125 Vdc, but your site manager suddenly handed you a requirement for 24 Vdc to run some communication gear? You might tell him to buy a 24 V battery and a 24 V battery charger. But, these elements come with costs: initial, maintenance, and probable future battery replacement. There is another way: for approximately the same cost as the battery ...
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  • Uninterruptible Power System-Use of Inverters & Chargers

    Uninterruptible Power System-Use of Inverters & Chargers

    May , 09 2022
    If you already have a pretty good idea about the available methods for converting ac power to dc power, an inverter covers the other direction: changing dc into ac. Normally, when we speak of an inverter, we mean a device that generates line frequency power from a dc source, to power conventional ac-powered loads such as a personal computer, or industrial controls and instrumentation. A UPS integr...
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  • The Necessity and Suggestion of UPS Battery Maintenance

    The Necessity and Suggestion of UPS Battery Maintenance

    Apr , 18 2022
    With the demand of the market, UPS is widely used in various industries, and the battery has become the power guarantee for the uninterruptible power supply system. When the mains are abnormal, the battery converts chemical energy into electrical energy, which is converted into AC electrical energy through the inverter in the UPS and delivered to the load to ensure uninterrupted and continuous ope...
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  • Battery charging tutorial-Part 2

    Battery charging tutorial-Part 2

    Apr , 18 2022
    Equalization Equalization is essentially a controlled over charge. Some charger manufacturers call the peak voltage the charger attains at the end of the BULK mode (absorption voltage) an equalization voltage, but technically it's not. Higher capacity wet (flooded) batteries sometimes benefit from this procedure , particularly the physically tall batteries. The electrolyte in a wet battery can str...
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  • Battery charging tutorial-Part 1

    Battery charging tutorial-Part 1

    Apr , 18 2022
    Current battery charging technology relies on microprocessors (computer chips) to recharge; using 3 stages (or 2 or 4 stages) regulated charging. These are the "smart chargers", and quality units generally are not found in discount stores. The three stages or steps in lead/acid battery charging are bulk, absorption, and float. Qualification or equalization is sometimes considered another stage. A ...
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  • Some FAQ about the Lithium batteries for UPS

    Some FAQ about the Lithium batteries for UPS

    Apr , 06 2022
    What are the primary benefits of switching to lithium based UPS batteries? The most common reason cited is the significantly longer service life. Lithium also provides a greater cycle life (the number of charge/discharge cycles ranges from extends into the thousands, versus approximately 500-600 for VRLA batteries), as well as a longer warranty. Furthermore, the lighter weight and smaller footprin...
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  • How to do the SOC-OCV test for Lithium batteries?

    How to do the SOC-OCV test for Lithium batteries?

    Apr , 06 2022
    OCV is very important for SOC estimation. It is a function of cell SOC and temperature. There are two methods to measure the OCV, namely coulomb titration and voltage relaxation. The former discharges and charges the cell with the same low current while measuring the terminal voltage. The OCV is defined as the average value of the charge and the discharge terminal voltage. The latter determines th...
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  • What are the differences among lithium batteries?

    What are the differences among lithium batteries?

    Apr , 06 2022
    Are all the lithium batteries same? No! In fact there are a group of related family chemistries. The battery industry highlights six common variants along with the chemistry characteristic details of those most applicable for your application. Below the 6 common types of lithium ion battery are shown in the table: Chemistry Lithium Cobalt Oxide Lithium Manganese Oxide Lithium Nickel Manganese Lith...
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