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Overview
Battery items provide temporary backup power for devices in the same room. They are normally used by PvP bases, so their devices can be kept operational for a short period of time if the main Power Unit fails. Occasionally, Batteries can also be used as temporary solution for a base with power requirements slightly over the max output of their main power unit, however this use is not common, as batteries have usually extremely long recharge times.
The number of batteries that can be placed in a base depends on the plot size. Hidden Base Plots can have only a single battery while Secure Base Plots can have between 3 and 6 depending on size as shown below.
Batteries