ISO 9001:2015 · UL · IEC · CE · UN 38.3 — audited manufacturing since 1998
Telecom & Data Infrastructure
48 V DC lithium backup for base stations and edge cabinets — sized per site, shipped as a shelf, monitored over the same CAN bus the network already uses.
Stated plainly, because a solution that does not name the problem it removes is a product brochure.
A flooded or VRLA bank is specified at a 10-hour rate the site never operates at. Under a real 3-hour discharge its usable capacity is 60–70 % of the figure in the design document, and the site is already short before the first fault. Health checks report voltage, not capacity, so the degradation is invisible until the outage that exposes it.
A conventional 48 V bank weighs several hundred kilograms, needs ventilation design, and structurally is a room-level decision. Sites that cannot get that capital approved stay on degraded batteries for years, which converts a maintenance problem into an availability problem.
On weak grids the genset runs far more hours than the traffic load requires, because there is no storage to carry the load between outages. Fuel, servicing and noise complaints all scale with those hours.
When a site fails, the retrospective question is whether the battery was healthy. Without per-module state of health and cycle counts, the answer is an opinion. That is what turns a warranty claim into an argument and a service contract into a cost centre.
A telecom backup system is not a battery purchase. It is an availability calculation that has to hold at the end of the service life, under the actual discharge rate, at the actual site temperature.
Three numbers decide whether a site survives a six-hour outage in year four:
| Design input | Common mistake | What we size against |
|---|---|---|
| Discharge rate | Nameplate at a 10-hour rate | The site’s real 3-hour rate |
| Capacity basis | Beginning of life | End of life at 80 % state of health |
| Temperature | 25 °C reference | The hottest month inside the cabinet |
Sizing against beginning-of-life capacity at a 10-hour rate is the single most common reason a nominally adequate bank fails in service. We re-run the calculation against the operator’s own load data before quoting.
The DC side is a 48 V string of BR-48100 modules on standard 19-inch rails, paralleled up to sixteen deep with current sharing negotiated by the BMS. A single module is a one-person lift, which removes the crane, the structural approval and most of the downtime from the replacement.
The AC side is a single HP-100 bidirectional converter that charges the same string from solar, from the mains in a tariff window, or from the genset. When the mains drops, the converter forms its own island and carries the backed-up circuits through a 10 ms transfer — short enough that switch-mode rectifiers in the transmission equipment do not restart.
State of charge is the least interesting number on a healthy site. The useful ones are state of health per module, cycle count, and the per-cell temperature spread that predicts a failing module before it drags the string down.
All four are published over Modbus RTU and CAN 2.0B, mapped to registers chosen at commissioning so they land in the operator’s existing network management system rather than in yet another dashboard.
Lithium cells cannot legally move without a UN 38.3 test summary covering the exact cell and pack configuration. Every shipment carries the UN 38.3 summary, the UL 1973 certificate, the IEC 62619 report and a declaration of conformity, prepared before the goods leave rather than after the forwarder asks.
Typical lead time for a complete site kit is 28 days for the modules and 42 days for the converter. Site acceptance test procedures and register maps are issued with the quotation, not with the invoice.
Every line below is a catalogue item with a published specification and a declared certification set. Nothing here is a configuration that exists only inside a quotation.
Energy Storage & Power Conversion
Model BR-48100
51.2 V / 100 Ah lithium iron phosphate module with an integrated BMS and CAN telemetry, sized for 19-inch cabinets in telecom and commercial sites.
Energy Storage & Power Conversion
Model HP-100
100 kW bidirectional converter with dual MPPT inputs and grid-forming backup transfer in 10 ms, rated IP66 for outdoor installation.
Commercial & Industrial Buildings
Rooftop solar plus battery storage behind the meter — one converter, demand-charge reduction, and backup for the circuits that actually matter.
4 documented problems2 recommended product lines
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