How to quickly determine the quality of lithium battery UPS and UPS batteries? How can ordinary users accurately and quickly judge the quality of a UPS power supply when purchasing lithium battery and UPS batteries? When choosing lithium battery UPS or UPS products, whether for small and medium-sized enterprises or others, the quality of the UPS battery must be the first consideration. Quality is the primary criterion for users when selecting products. This article will introduce how to do so.
How to quickly determine the quality of a lithium battery UPS?
To determine the quality of a lithium battery UPS, we typically use professional measuring instruments. However, such specialized instruments are not readily available to ordinary users. The steps are as follows:
① The method is actually very simple. First, you can judge from the appearance, just like the four diagnostic methods in traditional Chinese medicine: observation, listening, questioning, and palpation. When observing, first look at the integrity of the appearance. For example, check if there is any deformation or bulge on the appearance of the lithium battery UPS. If such a situation occurs, it means that the internal chemical structure of the lithium battery has been damaged, and it is the first type to be eliminated.
② In addition to observing the deformation, you should also check for leaks, cracks, explosions, burning, or internal liquid leaking from the screw connections. Usually, such batteries have major quality problems. Not only should you not choose lithium batteries from this batch that have defects in appearance, but you should also avoid choosing batteries of the same model and manufacturer to prevent safety accidents and various malfunctions during use.
③ In addition to checking the overall appearance for completeness, it is also necessary to perform internal load measurements. Once it is confirmed that there are no abnormalities in the appearance, the next step is usually to load a certain amount of load onto the lithium battery UPS while it is in working mode. If the discharge time of the lithium battery cannot reach the normal discharge time, or if it still cannot return to the normal standard backup time after sufficient charging, it means that the battery has aged and can no longer meet people's daily needs for lithium batteries.
How to determine the quality of a UPS battery?
There are three methods to basically determine the condition of a UPS battery.
1. Simulated Discharge Method. Based on the battery capacity, for example, 60Ah, and according to the safe discharge standard, 0.1C, which is one-tenth of the capacity current, or 6 amps, discharge. Construct a high-power resistor with a resistance of 12V ÷ 6A = 2Ω. Use a multimeter to measure a 20-ohm section from a 1000W or higher heating element, then measure one-tenth of that section and mark it. Reliably connect the two battery terminals to the marked ends. Set the multimeter to DC voltage mode and connect the probes to both ends of the resistor. Temporarily touch the battery terminal with the red probe to the positive terminal and the other probe to the negative terminal. Hold this connection for 10 seconds. If the voltage remains above 10.8V, the battery is generally good.
2. Online charging measurement method. When the UPS is charging the battery online, measure each battery. If the voltage of a battery is high, there is a problem; remove the affected battery and measure it carefully.
3. Online discharge measurement method. Connect the UPS to the load online, disconnect the external AC power supply, and use the battery for power. Low voltage indicates a problem; disconnect the UPS and measure it carefully.
Under simple conditions, a rough test can be performed by using a multimeter to measure the no-load voltage of the UPS battery, connecting a small-resistance, high-power load to allow the battery to discharge with a large current momentarily, and then measuring the voltage at this time with a multimeter. The battery status can be determined based on the magnitude of the voltage drop.
How to determine the quality of a UPS power supply battery?
I. Stability: When users purchase UPS power supply battery products, whether they are small and medium-sized enterprises or others, they must first consider the quality of the UPS product. Product quality is the first priority for users when choosing a product.
II. Backup Time: This is a key performance indicator that many users pay close attention to when purchasing UPS battery products. From an academic perspective, a UPS is a system that continues to supply power to users after a power outage.
3. Determine the type of UPS: Based on the load's requirements for output stability, switching time, and output waveform, determine whether to select an online, line-interactive, standby, or sine wave/square wave UPS.
IV. Service Capabilities: A high-quality service system and proactive service attitude are also important factors that users must consider when purchasing a UPS.
Having said all that, the most crucial factor in judging the quality of a lithium battery UPS power supply and UPS battery is the battery's lifespan. Lithium iron phosphate battery packs are safe and reliable, do not explode or catch fire, are environmentally friendly and pollution-free, offer fast charging, and have a long lifespan, among many other advantages that make them highly favored by customers.
