This utility model provides a modular, easy-to-maintain universal battery cabinet. The cabinet includes a
power distribution unit and battery box units detachably connected from top to bottom. Multiple battery box units are included, each comprising a first housing and a battery tray slidably disposed inside the first housing. The battery tray has multiple first connection holes for connecting battery bodies. This modular, easy-to-maintain universal battery cabinet, through the cooperation of the
power distribution unit and multiple battery box units, allows for the modular installation of different specifications and quantities of battery bodies, facilitating users to freely combine battery capacities to meet usage needs in different scenarios. The battery bodies within each battery box unit can be individually removed via the battery tray, reducing the difficulty of later repair and replacement operations and simplifying maintenance.