1, but for the same series of products, it is basically directly interchangeable. For example, in order to reduce costs, manufacturers have long used the same mold to form a series, with little structural difference and the same battery specifications. The only difference is the battery capacity.
2. The battery has technical specifications. Before the actual replacement, even if the batteries are the same size, the specifications and parameters on the battery label should be clearly seen. For example,10.8v.
4400 mAh. Prevent accidents from affecting the normal use of the machine.
3. There is also the phenomenon that batteries of the same specification are used between different brands. The reason is that the battery is OEM, which saves the cost of the mold, and other people's things can be used. So it is not surprising that batteries can be used universally. However, before replacement, you should also see the specifications and parameters of the battery to avoid trouble.