HC Series 19-inch rack-mount LiFePO4 battery, 5.12–16.08 kWh

Why rack format

A rack chassis is a serviceability decision. In a telecom shelter or an IT room, the battery is one of several items in the cabinet, and the technician who replaces it is usually not a battery specialist. Slide-out rails, front terminals and a front-panel state-of-charge display reduce that job to unplugging two connectors.

The HC uses a 440 mm chassis — the 19-inch standard — with depth and height scaled by capacity. The 100 Ah module is 2U-class and 40 kg; the 314 Ah module is larger and 117 kg, which is a two-person lift onto the rails.

Parallel operation and addressing

Modules parallel on a common DC bus with a shared CAN bus for addressing. The master reports to the inverter as a single battery with the summed capacity; each module keeps its own protection, so a fault in one removes that module from the string rather than the whole bank.

For a 48 V rack, four 314 Ah modules give 64 kWh in a single cabinet — enough for a small commercial peak-shaving or backup duty, with the same inverter interface as a single module.

Charging in a rack environment

The common failure in rack installations is not the battery but the charger. Rectifiers built for lead-acid float at 54 V and will not fully charge a 51.2 V LiFePO4 module; they also lack the current limit the BMS expects at the top of the curve. Where a legacy rectifier cannot be reprogrammed, specify the module with a reduced charge current setting and accept a lower state of charge, or replace the rectifier.