Battery is the kernel of a UPS.  To make sure the UPS has enough anatomy, it’s necessary to change the battery for a certain time. Most UPS’s include the battery inside their housing. When changing the battery, you need to disassemble the housing by unscrewing many screws, then remove the out cover of the UPS. Usually, the battery is fixed by a metal structure which you need to unscrew again, remove the metal structure, find out the cables, remember the location because you need to plug them in later after changing the battery. Some UPSs’ have a hot swappable battery design. Through that, you just need to open the front battery cover, without screws, unplug battery cable, change battery, plug in and put the cover back. Just like our Clippers.