电动叉车是指以电来进行作业的叉车，大多数都是为蓄电池工作。而蓄电池是电池中的一种，它的作用是能把有限的电能储存起来，在合适的地方使用。它的工作原理就是把化学能转化为电能。 电动叉车的电瓶内装的也就是这种蓄电池。要注意的是：电池最好不要横放！因为，电池的内部一般是22～28%的稀硫酸。电池正放的时候电解液可以淹没极板并且还剩下一点空间如果把电池横放的话会有一部分电极板暴露在空气中，这对电池的极板非常不利，而且一般的电池的观察孔或者电池的顶部都有排气口与外界相通，所以电池横放电解液很容易流出。
Electric forklift refers to the forklift which works by electricity, most of which work for battery. Battery is a kind of battery. Its function is to store the limited electric energy and use it in the right place. It works by converting chemical energy into electrical energy. The battery of the electric forklift is this kind of battery. Note: it is better not to lay the battery horizontally! Because the inside of the battery is usually 22-28% dilute sulfuric acid. When the battery is being placed, the electrolyte can submerge the electrode plate and there is still a little space left. If the battery is placed horizontally, some of the electrode plates will be exposed to the air, which is very harmful to the electrode plate of the battery. Moreover, the observation hole or the top of the battery has an exhaust port to communicate with the outside world, so the electrolyte of the battery placed horizontally is easy to flow out.