Difference Between Inverter and UPS Battery System

Author:BSLBATT    Publish Time: 2021-12-18

What is a UPS battery system?

A UPS battery system is an uninterruptible power supply. A UPS battery system is a hardware device that provides backup power in the event of a power outage or severe power failure. A UPS system consists of many components. For a basic UPS system, it includes a backup battery, battery charger, inverter and transfer switch. In this basic UPS system, the inverter is used as a means of converting DC power to AC power, since power from the batteries uses DC power but must be distributed as AC power.

What is an inverter?

An inverter or power inverter is an electronic power device that converts direct current (DC) to alternating current (AC). It can be used as a stand-alone device, capable of receiving power from DC sources such as solar and batteries and converting it to AC power, or as an interactive inverter as part of a larger circuit such as a power unit or UP. The inverter does not generate or store power, but it can be connected to a power source, usually a backup battery, to support the power source.

Inverters have major disadvantages in terms of long switching times and lack of load protection. While inverters can also be used as backup power when combined with a battery storage system, UPS power backup is typically more expensive than inverters due to the more complex circuitry and additional components and features of UPS power backup.

Do I have to choose a UPS power backup or an inverter?

How do we choose between UPS power backup and inverter, since each has its own advantages and disadvantages? After reviewing the UPS power backup inverter differences comparison table above, you may have your answer. The products take into account factors such as cost, power requirements and protection. For simplicity, it all boils down to your backup needs and the most important thing to consider is the longer power delay.

Which one should I choose for my home/business: UPS device or inverter?

If you have not yet installed either of these, this section is for you. For large businesses and enterprise applications that require high reliability of the power system, you should always choose the device with the least delay - the UPS system - to keep your data safe and profitable. For home use, if you do not want to use the inverter as a UPS device to save money, the answer can be: it all depends. It is possible if you use the inverter for household appliances whose performance is not affected by long switching times. For example, for most household appliances such as light bulbs and TVs, the delay is tolerable. However, for critical devices such as computers, it is recommended that you switch to a UPS device if you lose data.

Do I still need a UPS device if I already have an inverter in my house?

Some people may be concerned about whether the inverter can handle power outages properly and plan to add a UPS device. if you do not want to use a PC on the main inverter and want to connect to the UPS device, no problem. However, please note that sometimes UPS device units do not work well with inverters (e.g. conventional UPS and older square/triangular output wave inverters) and sine waves can have terrible consequences. But if the inverter with UPS device is a pure sine wave inverter and the UPS can manage the sine wave, it is logically practical. For a better experience, it is recommended that you contact your inverter distributor and seek the help of their technicians.

An inverter that provides AC power to electrical equipment when there is no power. Used to control engine speed. In electrical systems, the inverter supplies power to the distribution system. It is also used for induction heating, as it converts low frequency power to high frequency power.

Inverter type:

 ◆ Stand-alone inverter

 ◆ Level Tai Inverter.

Stand-alone inverters are the main type of inverter that converts DC power to AC power. The output of the inverter is not related to a sine wave, but sometimes their shape may be distorted due to distortion. The grid connects the AC grid to the larger grid of the power system.

Inverters do not store electrical energy. Batteries are used to store electrical energy. Batteries store energy in DC form. Inverters help store AC power from the power source in batteries. The battery stores the current in DC and converts it back to AC with the help of the inverter and reaches the home appliances. The conversion is required as the electrical equipment runs on AC power.

Main differences between UPS battery system and inverter

 1. A UPS battery system is an electrical device that has a rectifier to supply power to the system, while a DC inverter converts it to AC power.

 2. The main function of the UPS battery system is to store power, while the inverter converts AC power to DC power.


 3. In the event of a power failure, the UPS battery system immediately switches from the main power source to the backup battery power, while the inverter has a certain delay.

 4. The UPS battery system provides the backup standby electrical power and the inverter provides the backup electronic power.

 5. Off-line, on-line and line interruption are the UPS battery system types, while there are two types of inverters, standby inverters and grid-connected inverters.

 6. The UPS battery system connects directly to the home appliance, while the inverter connects first to the storage battery and then to the home appliance circuit.

 7. The uninterrupted power supply is more expensive than the inverter.

 8. The uninterrupted power supply circuit contains a rectifier and a backup battery. The rectifier converts AC power to DC power and stores the energy in a backup battery, while the inverter has an external battery to store the DC power.

 9. The uninterrupted power supply provides backup power for a very short time, while the inverter provides power for a long time.

 10. Uninterrupted power supplies have no voltage fluctuations because their input is independent of the output power, while inverters have voltage variations.

 11. The uninterrupted power supply is used in offices and industries for home use, while the inverter is used in offices.


The UPS battery system is more efficient than the inverter. The UPS battery system provides power support for home appliances without delay or fluctuation. The inverter is the intermediary between the main power supply and the storage battery. The storage battery helps save energy and converts stored AC power into DC power to power the power inverter during power outages.

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