The world’s first supercapacitor energy storage system

Are you fed up with replacing Led acid or li-ion batteries every few years at a huge cost?

The Sirius Supercap is a direct swop out, it is a plug and play and will last a lifetime. Greenfox NZ has a variety of different units available that will suit your needs. See the range below. Also refer to the Centauri server [click through to Centauri page] for more information on Microgrids and our Containerised solutions (your own little powerstation) or call John.


  1. 10 Year warranty*! No cycle conditions
  2. 45 year life span
  3. Replace your existing led acid or Li-ion battery with Sirius Supercaps
  4. Fast charge from trickle charge to 500A
  5. Environmentally friendly battery (CHEMICAL FREE BATTERY)
  6. 1 million cycles

These batteries are environmentally friendly, safe, sustainable, cheaper to maintain and most importantly, unparalleled performance. Greenfox NZ offers a safe and efficient alternative to chemical batteries.

The last battery you’ll ever buy.

Distributed by Greenfox NZ

Key benefits of Sirius Supercaps

Modular and scalable

Easily scale voltage or capacity by adding core modules. The communication module at the chassis level maintains control and stability of the storage system at any size.

Flexible charging and discharging cycles

Sirius can be charged or discharged (flat curve) at any rate (15 seconds to hours) without affecting the cycle life or capacity


The supercap cell has a projected life of 45 years or 1 million cycles.

Thermal stability

Sirius produces a minimum amount of heat during charge and discharge cycles.

Wide operational temperature range

The system remains effective in extreme temperatures ranging between -30℃ and 85℃.

Environmentally friendly

Sirius is non-toxic and poses no threat of thermal runaway.


The system works with standard inverters/rectifiers/regulators used with Lead Acid or Li-Ion batteries.

Lower pricing

Sirius is priced lower than comparable chemical batteries.


Solar Systems

Hydro plant systems

Water pump systems

wind power

Grid Storage




Golf Carts


Trains... yes even trains