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Super Capacitor Batteries   arrow


EasySolar  is an official resseler of  SIRIUS Super Capacitor Battery and CENTAURI energy server ( inverter) from KiloWatt Labs, USA based Capacitor battery and Energy Server manufacturer.  http://www.kilowattlabs.com

The SIRIUS energy storage system is modular and can be discharged rapidly or slowly, depending upon the requirements of the load. With an energy density of more than 115Wh/Kg, charging time of less than 30 seconds, cycle life of 1 million cycles, round-trip efficiency of 99.1%,  the SIRIUS energy storage solution is a serious alternative to all chemical batteries and is a new paradigm in energy storage. It easy compete with all types of Li-Ion and Iron-Phosphate batteries by price, applications, reliability and cost per kW/h energy.

SIRIUS BATTERY  Applications: Utility scale storage for frequency regulation, peak shaving, asset deferral, black start; EV’s; Behind-the-Meter storage for residential, commercial and industrial applications; micro and macro grid systems for remote locations; refrigerated containers; man-camp housing; container housing and for telecom towers.

Our range of offered batteries are include:

  • 480W/12V, 480W/24V  for general use
  • 1000W/12V for general use
  • 3.55kW/h/48V for general use- stock is available
  • 6.7kW/h/48V for telecom use
  • 7.1kW/48V for general use  – stock is available
  • 7.1kW/h/48V for telecom use


R41300-00 Excl. VAT – 3.55kW/h/48V for general use

R82600-00 Excl. VAT – 7.10kW/h/48V for general use


Fast Charging/Discharging:

SIRIUS Super Capacitor will be charged as fast as your Inverter or Solar Charge controller will  Allows.  The Sirius Super Capacitor Module can theoretically be charged in less than 32 seconds without affecting cycle life and various models are available with different charge and discharge ratings, ranging from 1C to 135C.
The popular model in the Solar PV and Home use market is the 1.35C Model, which means the unit can be fully Charged or Discharge 1.35 times in an hour ( 45min for full charge or full discharge to 100% of its capacity).
This is faster that any normal application in the Solar PV and home use market.
You can charge and discharge the 1.35C model in 44 minutes, which makes this well suited even for sites where you energy storage is rechargeable by generator of the grid and multiply times per day.

Faster charging/discharging models 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 and it reduce cost of batteries.
Fast charging/discharging of the Sirius provides utilities with real time response capability to frequency regulation.


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 80 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

Number of Batteries & Ultra Low Impedance 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. In other words, you can use the full 100% rated kW battery capacity without ever damaging the unit.

Due to the very low Impedance of the SIRIUS, up to 10 units can be placed in parallel before ripple current needs to be considered and battery balancing system implemented ( provided by supplier).

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 Range

Enables Usage in Most Environments.

The SIRIUS can operate between -30 deg Celsius and +85 deg Celsius without any effect to the battery performance or service life.

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

The foremost reasons why chemical batteries do not reach there stated usage cycles are depth of discharge and temperature.

SIRIUS will never disappoint you on either of these aspects.
You can discharge to 0% and you can operate at Extreme temperature.

Charge Retention

A Patented, charge retention circuit, controls energy flows and slows down the typical capacitor discharge to a level where self discharge is no longer of practical concern.

The SIRIUS Super Capacitor Energy Storage Module only self-discharge 5% after 25 days!

Utility Grade Storage

Kilowatt Labs’ Sirius can provide multiple services to the grid to deliver higher rates of efficiency, and more efficient use of capital already invested in the grid infrastructure.

With 99.1%+ round-trip efficiency, high temperature tolerance, >1 million charge cycles, 100% DOD, long duration discharge, fast-charge capabilities, Sirius provides an array of support services when connected to the grid, either by devoting all its capacity to a single service or to multiple services simultaneously. With the Centauri Energy Server, the service mix that provides the optimal benefit to the grid in real time can be determined and supplied. The Sirius battery offers solutions for frequency regulation, renewable integration, T&D deferral, spinning reserve, peak shaving, ramping support and voltage support.

Electric Vehicles

Bringing Instant Mobility to the Electric Vehicle Industry.

With a charging time of less than 15 seconds, the Sirius battery enables instant mobility to electric vehicles, putting them at par with a combustion engine car. With an energy density of 115Wh/kg of delivered energy, a cycle life of 15,000 cycles, high temperature tolerance and low cost, Sirius battery enables electric vehicles’ attributes to exceed combustion engine cars for the first time.

The Sirius battery can be deployed in all kinds of vehicles, 2 and 3-wheel vehicles, passenger trucks and buses, trains, trams, SUV’s, industrial vehicles, and military vehicles.

Behind-The-Meter Residential, Commercial And Industrial Solutions

Sirius storage can be deployed in demand charge reduction applications, with unmatched technical and economic metrics. It can be deployed as a resource in demand response programs instead of fossil fuel alternatives. Together, with the Centauri Energy Server and PV solar, it can be deployed to provide 24×7 power in territories that have high tariffs, and discontinued NEM programs.

The Sirius battery can be deployed in homes, commercial establishments, factories, refrigerated containers, and telecom towers.


The SIRIUS CAPACITOR MODULE has the following major components:

1. KiloWatt Labs Super Capacitors

There are the individual energy storage units inside the SIRIUS.
The super capacitors are designed and manufactured by KiloWatt Labs and boast an ever-increasing high energy density of 80Wh/kg.
The super capacitors has a minimum, ever-improving, Graphene / rGO content of 98.3%.
The super capacitors are arranged and interconnected to provide the required voltage and storage capacity of the specific model.
For instance, inside the 7.1kWh SIRIUS CAPACITOR MODULE, there are 2400 individual super capacitors, arranged in a specific manner to provide 48VDC module with an overall energy capacity of 7.1 kWh.

2.  Capacitor Controllers

To prevent each super capacitor from discharging all it’s stored energy as quickly as possible, KiloWatt Labs designed unique, patent pending controlling electronics to control the discharge rate and voltage of each individual super capacitor. This controller is highly efficient and unique to the KiloWatt product range.
Multiple versions of the controllers exist and the most applicable version is selected for the required/desired charge and discharge rate of the model being built.

3. Interconnecting Wiring

All those individually controlled super capacitors are interconnected with circuitry and wiring. The current carrying capacity of the interconnecting circuitry and wiring are matched with the required / desired charge and discharge rate of the model being built.

4. Overall Monitoring, Balancing Controller


  1. The health of the arranged super capacitors and capacitor controllers.
  2. Voltages
  3. Charge and Discharge rates
  4. Stored Energy etc.

5. Safety Circuit

– The SIRIUS CAPACITOR MODULE also has built in safety circuit that protects the entire unit when abnormal internal or external conditions are detected.   


SIRIUS CAPACITOR MODULES are manufactured at different C ratings.
Presently KiloWatt Labs produce Models from a 1C rating (charging in 1 hour) up to a 7C rating (charging in under 9 minutes) for different applications.

The desired charge and discharge rate directly affects the amount of current that will flow at any given moment.
The higher the allowed current, the more copper is required in the interconnecting wiring and controller circuitry.

The KiloWatt Labs super capacitors inside every SIRIUS CAPACITOR MODULE are capable of charging in 30 seconds, but the controllers, circuitry and wiring is matched with the product need.

The SIRIUS CAPACITOR MODULES that are suitable for the Solar PV  market has a C Rating of 1.35C
This means that the unit can be charge form 0% to 100% in 45 minutes.

For the 3.55kWh – 1.35C unit this rating equates to a charging and discharging current rating of 100A (48VDC) and

For the 7.1kWh – 1.35C unit this rating equates to a charging and discharging current rating of 200A (48VDC)



The KiloWatt Labs Super Capacitor as the energy storage heart of the SIRIUS CAPACITOR MODULE, can provide an expected >1 million charge and discharge cycles.

The Controlling, Charging and Monitoring Circuitry has an expected lifespan of 45 years.

The product carries a 10 year manufacturer’s warranty

Practically speaking, the SIRIUS CAPACITOR MODULE will outlast your solar array.