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Super Capacitors

 ~ The Game Changer ~

This is not a battery! This is a 21s century storage device.

The world’s FIRST super capacitor-based energy storage system.

Safer, more efficient, more effective, longer life-cycle energy storage.

  • Operating temperature range -30°C to 85°C
  • No capacity degradation or cycle reduction at 100% DOD
  • 99% + DC-to-DC round-trip efficiency
  • Medium and long duration discharge capability
  • Charge/discharge at 2°C with no effect on cycle life or capacity
  • Safe with no risk of thermal runway or heat generation
  • 1 Million life cycles
  • 10-year warranty

Operating Temperature Range

-30 to 85+ degrees Celsius

Cycle Life

No capacity degradation or cycle life reduction at 100% DOD


99% Dc to DC round trip Efficiency


Medium and Long Range discharge capabilities

Charge Current

Charge / discharge at 2C with no effect on cycle life or capacity


Safe with no risk of thermal runaway or heat generation

Battery Life

1 million life cycles


10 Year Warranty

Energy Storage

Kilowatt Labs’ supercapacitor based energy storage, Sirius, is the first supercapacitor based storage system that delivers deep cycle discharge, long duration discharge as well as fast charge / short discharge, alongwith all the inherent advantages supercapacitors have over conventional chemical batteries.

The Sirius storage system can be deployed from watts to megawatts and has a cycle life of 1 million cycles.

Fast Charging

Eliminates the Need For Large Battery Banks

The Sirius battery can be charged in less than 30 seconds without affecting cycle life. This feature delivers significant advantages in a wide range of deployments such as in electric vehicles or utility grade frequency regulation.

An infrastructure of fast-charging stations eliminates the need for large battery banks with extended range. Fast-charging of the Sirius provides utilities with real time response capability to frequency regulation.

Current Control and Stabilising Circuit

Increases Energy Density and Operating Voltage

Sirius’ proprietary algorithm-based balancing, charging and control circuit actively balances and stabilizes the system, delivers deep cycle and long duration discharge and specific energy of 115 Wh/kg. Therefore, in addition to standard fast charge / discharge usage, the Sirius storage system can be deployed at industry voltage, in applications requiring deep cycle discharge including electric vehicles.

High Efficiency

Lowers Capital Cost by Reducing the Number Of Batteries

With a Depth-of-Discharge (DOD) of 100% and round-trip efficiency of 99.1%, the Sirius battery’s delivered and rated capacity are almost the same, allowing for a significant reduction in the number of batteries required when compared to systems utilizing chemical batteries, thereby lowering capital investment.

Cycle Life

Lower Cost of Ownership

The cycle life of the Sirius storage system is 1 million cycles at 100% DOD with negligible capacity fade and impact of charge / discharge rates. Combined with very low maintenance requirements, Sirius delivers power and energy at an unmatched cost per cycle.

Temperature Tolerance

Enables Usage in Most Environments

With a temperature tolerance range that is higher than most chemical batteries, the Sirius battery can be deployed in extremely harsh environments without cooling or heating, resulting in less oversight and maintenance.

Charge Retention Circuit

A charge retention circuit controls a small percentage of embedded Li Ion to supply current to reduce charge leakage and increase self-discharge time 2% per month.