Telecommunications equipment cabinets including isolated and removable battery box assemblies

A method of exchanging components in a telecommunications equipment cabinet, the telecommunications cabinet including at least one equipment chamber defined within the cabinet housing and multiple battery boxes positioned in the cabinet housing, the at least one equipment chamber having one or more electrical components disposed therein, each battery box including at least one battery, each battery box isolated from the at least one equipment chamber to inhibit hydrogen gas from escaping the battery box into the at least one equipment chamber, the method comprising:

• removing one of the multiple battery boxes from the cabinet housing to define a space previously occupied by said one of the multiple battery boxes;
• and
• inserting another electrical component into the space previously occupied by said one of the multiple battery boxes while maintaining isolation between the inserted electrical component and the other battery box(es) remaining in the cabinet housing to inhibit hydrogen gas from escaping the other battery box(es) to the inserted electrical component.

21-26. (canceled)