VRLA battery and its application

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VRLA battery and its application [Copy link]

The capacity of power equipment is usually expressed in kVA or kW. However, for VRLA batteries used as power sources, it is more accurate to express their capacity in ampere-hours (Ah). Battery capacity is defined as: Q = idt (1)

Theoretically, t can approach infinity, but in reality, when the battery discharges below the termination voltage and continues to discharge, this may damage the battery, so the t value is limited.

In the battery industry, the sustainable discharge time of the battery is expressed in hours (h). Common nominal capacity values include: C240, C20, C10, C8, C3, C1, etc.

The nominal capacity of small batteries is measured in milliampere hours (mAh), while the nominal capacity of large batteries is measured in ampere hours (Ah), kiloampere hours (kAh), etc. The telecommunications industry often uses nominal capacity values such as C10 and C8.

For example, the common Deka battery 12AVR100?SH is a 12V single body with a capacity of 100Ah, which means it can discharge continuously for 10h with a current of 10A, and the total Ah discharged is 10×10=100Ah (in actual testing, in order to keep the current value constant, when the voltage changes, the external circuit load should be adjusted for measurement).