The battery plays an important role in the DC operation power supply equipment, and it is also the main part of the price of the DC operation power supply equipment. Therefore, it is very important to select a good group of batteries, which can reduce the maintenance workload in the future and ensure the working life. Nowadays, with the development of science and technology, lead-acid maintenance free batteries have been widely used. The advantage of such batteries is that the maintenance workload is small.

There are few problems in the regular service life of the battery, but this kind of battery is expensive. Here are some important indicators of lead-acid maintenance free battery. Selection of electric battery for pilot control, power capacity; When we choose the battery, we should depend on the capacity required by the equipment, from small capacity, small capacity of 20Ah to large capacity of 180Ah. When we choose the battery with the same capacity, small size should be preferred.

Self discharge rate; The lower the self discharge rate of the battery, the better. The internal resistance of the battery shall be average; The average internal resistance of the battery is very important for battery charging and discharging and maintaining the battery voltage balance, which is better between 1.15 and 1.2 Ω. Whether the internal resistance of the battery can be averagely measured by the electric battery internal resistance tester held by the pilot plant. The battery internal resistance tester is a digital storage multi-function portable tester that can quickly measure the operating state parameters of the battery.

The battery internal resistance tester monitors the voltage and internal resistance of single battery online. The battery internal resistance tester stops storing and processing the monitored data, and stops alarming the battery fault. Service life of storage battery; When choosing a battery, if the fund is sufficient, it is better to choose a battery with a long service life (10 years). Due to the long service life of the battery, its performance is more stable and reliable.