Valve regulated lead acid (VRLA) battery is applied extensively in substation DC systems as its less maintenance.
阀控式铅酸蓄电池简称VRLA电池，维护量小，在变电站直流系统广泛应用。
A new method of multi-stage constant charge for valve-regulated lead-acid (VRLA) battery system of electric bicycle has been studied in this paper.
通过对电动自行车用阀控铅酸(VRLA)蓄电池特性的分析，研究了一种新的充电方法——分段恒流充电法。
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