How many types of batteries are commonly used in scales?

The commonly used batteries in scales include the following types:
Lead-acid battery: This is a relatively common and cost-effective type of battery. It has the advantages of mature technology, affordable price and large capacity, but it is heavy and has a relatively short service life.
2. Lithium-ion batteries: They have the advantages of high energy density, light weight, fast charging speed and long service life. However, their cost is relatively high.
3. Nickel-metal hydride batteries: They have relatively good charging and discharging performance and stability, and cause relatively less pollution to the environment. However, their energy density is generally not as high as that of lithium-ion batteries.
When choosing a battery for scales, it is necessary to comprehensively consider factors such as the working requirements of the weighing equipment, the usage environment, the cost budget, and the performance characteristics of the battery.

衡器常用蓄电池有几种？

衡器中常用的蓄电池有以下几种：

1. 铅酸蓄电池：这是一种较为常见且成本相对较低的蓄电池。它具有技术成熟、价格实惠、容量较大等优点，但重量较重，且使用寿命相对较短。

2. 锂离子蓄电池：具有能量密度高、重量轻、充电速度快、使用寿命长等优点。不过，其成本相对较高。

3. 镍氢蓄电池：具备较好的充放电性能和稳定性，对环境的污染相对较小，但能量密度一般不如锂离子蓄电池。

在选择衡器用蓄电池时，需要综合考虑衡器的工作要求、使用环境、成本预算以及蓄电池的性能特点等因素。