第一，应根据用电器具的要求，选择电池类型和规格尺寸，并根据用电器具耗电的大小和特点，决定购买哪一种类型的电池，如BP机一般选用P型（高功率）锌锰电池和碱性锌锰电池。选用碱性锌锰电池效果最理想，可免去频繁更换电池的烦恼。随身听、剃须刀可选用碱性锌锰电池；电子钟 First, should be based on the requirements of electrical appliances, select the battery type and size specifications and power consumption according to the size and characteristics of electrical appliances, to decide which type of battery to buy, such as the BP machine generally use P type (high power) Zinc manganese batteries and alkaline zinc manganese batteries. Use of alkaline zinc-manganese batteries the best results, eliminating the frequent replacement of the battery trouble. Walkman, razor alkaline zinc-manganese batteries can be used; electronic clock