Off The Grid Bio Energy Cooker – The ACE1​


Dimensions: 33 x 33 x 35cm

Weight: 4.6kg.

Fuel: Solid biomass. Wood pellets are recommended.

Fuel Consumption:

  • Full fan 750 grams (8mm pellet) in 50 minutes.
  • Low fan 750 grams (8mm pellet) in 100 minutes.

Battery: LiFePO4 6.4 V / 5 Ah.

The ACE-1 Cooker comes with:

  • LED Light 100 lumens
  • Solar Panel 9 volt SW unit unregulated (regulator integrated into the stove)
  • Wall Charger for battery 9 volt

This Christmas $30 from your purchase will be gifted to one of two projects:

  • Help sponsor a cook stove to a Village in the Pacific Islands gifting them a life free from cook smoke.
  • Forest and Birds Kiwi Conservation Club (KCC) Educating New Zealand schools through Conservation. Visit KCC’s website: to find out more.
SKU: N/A Category:


ACE 1 Biomass Cooker Features

Dimensions: 33 x 33 x 35cm

Weight: 4.6kg

Fuel: Solid biomass. Wood pellets are recommended.

Fuel Consumption:

Full fan 750 grams (8mm pellet) in 50 minutes.

Low fan 750 grams (8mm pellet) in 100 minutes.

Battery: LiFePO4 6.4 V / 5 Ah.

How It Works

ACE 1 Biomass Cooker How It Works


  • A fan blows oxygen into the chamber through holes at both the bottom and the top. This drives the fire to increase in temperature until it reaches approximately 1000°C. These conditions cause the biomass to gasify.
  • Then the hot gas floats up to the top, meeting more oxygen and combusting completely.
  • The stove will produce as much as 5kW worth of energy, and the outside temperature, though warm after continued use, does not become hot enough to cause injury.
  • When fully charged, the battery will power the fan for over 20 hours of cooking. The battery can also be used to charge a mobile device or run LED lighting and can be boosted using a solar panel.


Take extra care when cooking

  1. The room should be well ventilated.
  2. Place the stove on a flat surface.
  3. Keep the stove out of reach of small children.


  1. Before using the stove for the first time, be sure the battery is fully charged.
  2. Put the solar panel outside in the sun, or in as much light as possible, and connect the cable to the stove.
  3. The stove can be used while the battery is charging.
  4. When the blue light is on, the stove is charging.
  5. When the green light flashes, the stove battery is low on power and it is time to recharge.
  6. A low battery will need charging for a day or two at least to be fully charged.

3 hours of cooking ≈ 1 hour of charging
Solar panel charging time may vary according to exposure to sunlight.


  1. Place a small number of dry sticks, paper or firelighters in the burning chamber.
  2. Set the fuel alight.
  3. Turn the knob to the right to switch on the fan. The green light will turn on and air will enter the burning chamber.
  4. Keep adding sticks of wood to the flames.
  5. Once the wood is burning properly, place the pot on top. Any size pot can be used on this stove.
  6. Add fuel every so often to keep the fire going. Do not add large amounts of fuel at the same time – this might smother the flame and cause smoke.
  7. To increase the flame turn the knob to the right. To decrease the flame turn the knob to the left. When finished, turn the knob to turn off the fan.
  8. Allow the ashes to cool completely.
  9. Empty the stove by turning it upside down. The ashes are good soil nutrients.


  • NEVER pour paraffin directly into the cookstove.
  • NEVER put the stove in water or pour water into the burning chamber.
  • NEVER leave the stove outside in the rain.
  • NEVER let the food boil over into the burning chamber.
  • NEVER carry the stove while burning.
  • NEVER pour burning ashes out of the stove.


  • DO NOT use long pieces of wood that stick out above the burning chamber.
  • DO NOT fill the stove to the rim or above.


When the stove battery is charged you can use the USB or DC ports to charge your phone and other devices and power an LED light. Keep your devices a safe distance from the stove.


The battery used in the ACE 1 stove is a high-tech LiFePO4 battery. This will give a far greater life and reliability than lead-acid batteries, and is less detrimental to the environment.

All batteries are dangerous:

  • Do not short circuit.
  • Do not take apart or puncture or damage.
  • Dispose of properly.

The battery is 6.4 Volts nominal and 5 Ah. There is a BMS circuit to prevent over – or undercharge.
If treated properly, this battery can give many years of service.
A full charge on 220V using the supplied charger will take 8 hours.
Using the solar charger will take two days of good sunshine to fully charge the battery.
The battery can be charged as often as you like and does not have to be run down first.


To charge the stove using the solar panel, plug the attached solar panel into the charging port and place it somewhere facing direct sunlight.
The blue light will turn on when the stove is charging.


You can use the following biomass fuels:

  • Coconut shell and husk
  • Dried dung
  • Wood (chopped into small pieces)
  • Biomass fuel pellets
  • Bamboo
  • Agricultural waste e.g. Corn cobs


  • Make sure to only use dry wood
  • Wet wood will cause smoke
  • Cut larger pieces of wood into smaller pieces
  • Do not use painted or impregnated wood
  • Never use flammable liquids in the stove