The reliability of the battery and the specific capacity that can be given to the load during the whole process of discharge are of great practical significance to ensure the reliable operation of electrical equipment. You may not know about the battery charge and discharge tester, so let's get to know each other today. How to maintain the battery charge and discharge tester?

1. Accurate measurement of floating charge working voltage method

The setting of the floating charging working voltage has a very critical influence on the service life of the battery. In theory, the total current flow caused by the floating charging working voltage is required to compensate the self-discharge of the battery. If the floating charging working voltage is too high, it will cause the battery to be positive Grade corrosion and water shortage will reduce the battery capacity, and if the floating charging working voltage is too low, the battery will be insufficiently charged, causing the battery to be outdated. In severe cases, potassium thiocyanate will occur. The selection can also be set according to the needs of the manufacturer's instructions.

Although accurate measurement of the floating charging voltage and making changes directly is a major task in the daily maintenance of the battery, accurate measurement of the floating charging voltage cannot find a single battery that is outdated. Use a digital multimeter to measure this situation. The single float working voltage is very average, but after discharging for a while, the DC voltage of one of the cells quickly drops below the cut-off voltage, and it is obvious that the cell is outdated.

2. Internal resistance or conductance test method

At this stage, it is fashionable in the world to test the internal resistance of the battery by means of conductance detection to distinguish the registered capacity of the battery. The conductance, that is, the back of the resistor, refers to the working ability to conduct current, which indicates the size of the internal resistance. The resistor composition of the VRLA battery is intricate, including the ohmic resistance of the battery, the channel effect resistor, the electrochemical corrosion resistor and the effect of the 2-layer capacitor when the battery is charged. At different measurement points and different The resistance values ​​measured at all times include different compositions.

There is a certain fixed relationship between the remaining capacity and the internal resistance of the battery, especially when the remaining capacity is less than 50%, it will decrease rapidly, so there is an effective consistency to distinguish the battery capacity according to the conductance or resistance of the battery.

3. Volume measurement method

In order to accurately understand the specific condition of VRLA batteries, the only way to do a capacity test is to perform a capacity test on the battery. Although the verifiable capacity discharge test can completely measure the capacity of the battery, such test standards have many disadvantages, such as high cost and heavy machinery and equipment. And professional training for full-time personnel, etc., more specifically, this type of testing is essential to isolate the battery from the machine equipment for a very long period of time, and during this time, if there is no battery as a reserve switching power supply, safety risks it goes without saying.

The above are the various maintenance methods of the battery charge and discharge tester, I hope to help you.