Sirius supercap telecom storage range is suitable for deployment in any BTS configuration including good grid, bad grid and off-grid sites. Easy plug-and-play integration with existing rectifiers, and a wide operating temperature range delivers reliable and consistent backup resulting in increased uptime of the network. High charge / discharge rate capability and multiple cycling delivers significant opex savings in diesel genset operation.

Sirius supercap storage is now the benchmark for telecom storage – enabling increased revenue through higher uptime and lower costs through opex savings.

Medium Voltage

Low Voltage

3550-48-B-1.7C- M-SD-A-19G




Key Features

Optimal operating temperature range-10⁰C to 55⁰C
Extreme temperature range-30°C to 80°C
Max. charge / discharge rate1C to 2C
Capacity available100%
Over temperature
Short circuit
Heat generated during cyclingNo
Capacity degradation due to cyclingNo


  • -10⁰C to 55⁰C operating temperature range with no impact on capacity or cycle life
  • 1C – 2C high charge / discharge rate with no impact on capacity or cycle life
  • 100% capacity always available in operating temperature range
  • No heat generated during cycling
  • No capacity degradation due to cycling
  • 10-year no degradation warranty
  • In-built safeties protect the module
  • Remote monitoring
  • Safe - no risk of thermal runaway
  • No maintenance required during warehousing or after installation
  • Environment - no disposal impact, fully recyclable
  • Anti-theft functionality mitigates theft risk

Summary Data Sheet

Model Number 1000-48-B-1C-TM-A-G 3550-48-B-1.7C-M-SD-A-L-19G
6700-48-B-1.4C-M-SD-A-L-G 7100-48-B-2C-M-SD-A-G
Voltage (Nominal) 48 Vdc
Maximum Charge Voltage 54 Vdc
Discharge Cut-Off Voltage 44 Vdc
Energy Capacity 1000Wh 3550Wh 6700Wh 7100Wh
Maximum Charge Rate 20A 100 A 200A 296A
Maximum Discharge Rate 20A 100 A 200A 296A
Dimensions (w × d × h) (mm) 128 X 1420 X 118 482.6 × 530 × 270 535 x 550 x 330 608 x 530 x 345
Weight (kg) 23 69 105 125

Case Study

Energy consumption is a major portion of a BTS’s opex, particularly in bad grid and off-grid sites which rely on diesel generators. With growth in telecom usage, particularly in the developing world, the grid is increasingly not available and telecom operators are having to rely on diesel generators.

Deploying Sirius supercap storage allows reduction in opex through reduced genset runtime and increased diesel consumption efficiency. The key drivers in achieving these improvements are (1) the ability of Sirius supercap to be charged at more than 1C (depending on model) and (2) the ability of Sirius supercap storage to be cycled multiple times daily.


The high C-rate allows the genset to be operated at its maximum efficiency point, thus operating at optimal fuel consumption efficiency as well as considerably reducing runtime, leading to lower maintenance costs.

The table below is a summary of results from live sites of 5 telecom clients:

Site Pakistan 1 Pakistan 2 UAE USA Bangladesh
Original Battery – Type VRLA Li Ion
Original Battery – Capacity (kWh) 24 14.88 72 98 14.4
Replaced by Sirius – Capacity (kWh) 10.65 10.65 28.4 42.6 10.65
DG Runtime Savings 55% 85% 50% 86% 44%
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