Telecom power is a discipline of its own: the 48V DC plant, the rectifier shelf, and a battery string whose only job is to be ready. XD Battery’s own profile lists it as a member of the China Power Supply Society, and its documented telecom range serves that plant with 48V rack-mounted battery modules of 5.12 kWh for modern lithium-based backup and OPzV 2V strings where the design brief is measured in decades. The third format sites ask about — front-terminal 12V blocks for cabinet strings — has no separately documented model in the telecom series archive; it is covered on this site as a selection guide.
The front-terminal format deserves its name-check: by moving the terminals to the front of the block, it lets a full 48V string (four 12V blocks) live in a standard cabinet with every connection reachable from the aisle — installation and maintenance without pulling blocks. When a project specifies that format, send the cabinet depth and autonomy target with the inquiry and the team will confirm which documented models fit the string.
Sizing a telecom string
- Load in amps at 48V, and the autonomy hours your SLA demands
- Format: rack module, front-terminal cabinet string, or 2V plant string
- Environment: indoor plant room, outdoor cabinet, or shelter — temperature drives life
- Growth: leave string capacity headroom for the site’s next radio generation
The blog’s telecom backup battery guide works a complete sizing example, including why 2V strings and 12V strings age differently under the same float regime.
Lithium or lead acid for a telecom site?
Both live in this catalogue — 48V rack modules for lithium-based backup, VRLA and OPzV for lead acid. The deciders are autonomy, cabinet thermal reality, budget cycle and your organisation’s battery standards. We quote both against the same load.
What is a front-terminal battery?
A 12V block with terminals on the front face, designed for cabinet strings where all connections must be reachable from the front. See the front-terminal page.