FAQ

FAQ

Fuel Cartridge / Consumption

How much fuel does the unit consume?

Consumption depends on the electrical appliances. Consumption is currently around 0.9 l per kilowatt hour.

Is consumption lower for smaller fuel cells?

No. Consumption is dependent on the electrical power consumed in kWh. It is only daily consumption that depends on the maximum output of the fuel cell.

How long does an M10 or M28 fuel cartridge last on average?

Assuming an average requirement of 33 Ah/day (400 Wh/day):
- one M28 will last approx. 11 weeks
- one M10 will last approx. 4 weeks

Is it possible to connect more than one fuel cartridge to one EFOY Pro fuel cell?

Yes, we offer the DuoCartSwitch as optional accessory. Using the DuoCartSwitch you can connect a second fuel cartridge to your EFOY Pro. For more information please contact our partners. Please also refer to the users manual of the DuoCartSwitch or send a request to: sales@sfc.com

What certifications have EFOY fuel cartridges gained?

All EFOY fuel cartridges are TÜV-GS safety-tested and certified. EFOY fuel cartridges were designed to meet the highest safety requirements from the very beginning. Fuel cartridges are also approved and labelled for road, sea and air transport. Certificates

Why is it not possible to refill the fuel cartridges (either myself or through a third party) ? / When will there be a refill solution available for fuel cartridges?

The law stipulates that EFOY fuel cartridges may only be sold in sealed containers for safety reasons. Accordingly it is not permissible in law to provide a refill solution. In addition, the costs and energy overhead involved in refilling would not justify the benefits.

Do fuel cartridges have an expiration date?

There is a label on the back of every fuel cartridge indicating its use-by date. Shelf life is generally 3-4 years. IMPORTANT: Using a cartridge after ist use-by date the fuel cell can be damaged, also the warranty decays .

Why does SFC use methanol and not gas or some other form of fuel?

SFC has focused on the proven direct methanol fuel cell. This technology does not require the fuel to be converted into hydrogen in a very complex and elaborate process as is the case with e.g. propane or butane gas. A further advantage is the high energy density of methanol and the use of fuel cartridges as means of storage. One M10 cartridge weighs only 8.4 kg and provides a capacity of 920 Ah (which corresponds to more than 250 kg of lead batteries).

General Information

Why do I need an EFOY Pro fuel cell?

The EFOY Pro fuel cell is a fully automated battery charger that is quiet, simple and environmentally friendly, operating as a power generator in regions, where no grid connection is available, but a high power demand is needed. In off-grid industrial applications, that are not connected to the grid, the EFOY Pro fuel cell delivers reliable energy, in every weather condition - for security and surveillance, traffic regulation, remote sensors, etc.

What is the EFOY Pro fuel cell designed for?

The EFOY Pro fuel cell has been designed and developed for commercial or professional operation.

What ist a fuel cell?

A fuel cell is a galvanic cell that converts the energy created by the chemical reaction between a constant stream of fuel and an oxidant into electrical energy. The underlying principle is an electrochemical process that is also known as "cold combustion". It is in principle the reversal of electrolysis. A fuel cell is not an energy store but a converter that generates electricity. The energy required to produce electricity comes from the fuel.

How does the EFOY Pro fuel cell work?

The EFOY Pro fuel cell converts the fuel in the fuel cartridge direct into electrical current. Thanks to this direct conversion, which is performed with no moving parts, completely silently and without creating any pollutants, the fuel cell is extremely efficient, clean and environmentally friendly. For more Information go to: Function

Can I use the EFOY Pro fuel cell in hybrid operation with a solar energy system?

Yes. A lot of your customers do this. The fuel cell switches on automatically when there is insufficient sun available for the solar energy system. Our Partners will assist you planning and implementing your projects. Solar Hybrid Solution

How many fuel cells are in use?

SFC has already sold more than 22,000 EFOY fuel cells, which are in use day in, day out. The total operating time of all units amounts to over 8 million hours.

Why are there several models in the EFOY Pro range?

Customers' performance requirements vary depending on usage profile, personal needs, type and power consumption of the appliance and environmental conditions etc. EFOY Pro products with varying levels of output offer the customers the choice and opportunity to purchase the fuel cell that matches their needs. Technical Data

Which EFOY fuel cell matches my needs?

Ask our EFOY Pro distributors or us for the ideal energy solution that suits your demand.

Inclination angle

What is the maximum angle of tilt for EFOY Pro fuel cells?

The unit can be operated for a sustained period of time at an angle of tilt of up to 35° longitudinally and up to 20° laterally.

What happens if the fuel cell tilts further than this?

The fuel cell will switch off and will report an error when switched back on again. Please follow the instructions on the display.

Installation Operation

How is the EFOY Pro installed?

Installation is performed by an authorised partner. If you have any questions please contact our partners or send an email to sales@sfc.com.

What do I have to consider when installing th e EFOY Pro?

Make sure there is an adequate air supply and sufficient ventilation for waste heat and spent air. Please also ensure that there is enough space for the fuel cartridges and the unit itself. You can refer to the user manual for more details.

Can I retrofit an EFOY Pro fuel cell?

An EFOY Pro fuel cell can be easily installed at any time. It is simply connected direct to a normal battery. For more informations please contact our partners or refer to the user Manual

Can I connect more than one EFOY Pro fuel cell to a battery, to get a higher power output?

Yes, you can operate more units at one battery. For this application you should connect a Cluster Controller CC1 , which ensures an equal operation of all units.

Do I need an additional charge controller for an EFOY Pro fuel cell?

No. The EFOY Pro incorporates its own charge controller.

Can I connect electrical appliances direct to the EFOY Pro fuel cell?

No. The EFOY Pro fuel cell is a battery charger. Electrical appliances are supplied with power by the battery.

What types of battery can I charge with an EFOY Pro fuel cell?

An EFOY Pro fuel cell is an automatic charger for 12 V and 24V lead-gel, glass-mat, AGM or lead-acid batteries. The EFOY Pro automatically detects the battery and adjusts the switch-on and switch-off voltage to the battery voltage.

Can I charge more than one battery (e.g. 2x100Ah)?

Yes. We recommend that 2 x battery capacity is less than the total charging capacity of the EFOY Pro fuel cell.

Can I use an EFOY fuel cell to charge a lithium battery?

No. Please contact us if you need a fuel cell that can charge lithium batteries.

Is it possible to adjust the switch-on/switch-off thresholds?

Yes. All EFO Y Pro fuel cells allow the switch thresholds to be adjusted via the Interface Adapter IA1 and the Hyperterminal.

Is there a risk that the batteries can be exhaustively discharged?

No. An EFOY Pro fuel cell has a mechanism to prevent exhaustive discharge and will activate even when switched "OFF" in order to protect batteries from exhaustive discharge.

How much waste heat is produced?

The level of waste heat depends on the ambient temperature, which is why there is no simple answer to the question. The heat (measured in watts) is approximately three times as high as the electrical energy (rated power) generated by the unit. For example, an EFOY Pro 600 fuel cell produces approximately 75 W of heat.

What exhaust gases does an EFOY Pro fuel cell produce?

It produces very small quantities of water and carbon dioxide. The technology meets California's strict zero-emission requirements. The fuel cell produces as much spent air at peak load as a child does.

Does the exhaust air contain just water and CO2?

The exhaust air may also contain traces of methanol and methanol-based waste products. The quantities and concentration of these are below the legal thresholds. IMPORTANT: Always expel exhaust air into the open. Inhaling the exhaust air or drinking the water may be harmful to your health. The exhaust air contains no CO (carbon monoxide) or NOx (nitrogen oxide)

Can an EFOY fuel cell be operated in a moving vehicle?

Yes. The EFOY Pro fuel cell is approved for use in motor vehicles. Leading vehicle manufacturers install fuel cells in their vehicles as standard. For more Information go to Certificates

Can an EFOY Pro fuel cell also be monitored?

Yes, remote monitoring is possible with a modem. Please contact our partners or send an email to sales@sfc.com.

What safety standards does the EFOY Pro fuel cell meet?

The EFOY Pro fuel cell meets the highest standards of safety and quality, including regulations governing installation in motor vehicles. It is the world's first fuel cell to be certified in accordance with ECE-R10 (installation and operation in motor vehicles), CE and "Safety-tested and production-monitored fuel cell system" awarded by TÜV SÜD.

Purchase

Where can I buy an EFOY Pro fuel cell?

We recommend that you only purchase a fuel cell from authorised EFOY Pro partners or directly from us.

How much does an EFOY Pro fuel cell cost?

Your EFOY Pro partner can tell you the current price.

What is included in delivery?

Temperature

What is the temperature range in which the fuel cell operates?

We guarantee safe operation in an ambient temperature range of -20 °C to +50 °C (2nd generation EFOY Pro) and -20 °C to +45 °C (1st generation EFOY Pro).
Should you require a power source to operate under more extreme conditions please contact sales@sfc.com

Is it possible to run an EFOY Pro at temperatures below 0°C?

Yes. The fuel cell has an intelligent frost protection mechanism which ensures that it function when used at even very low temperatures.

What happens above +50, respectively above +45 °C which is considered to be the maximum temperature?

Operation up to +45 °C with 1st generation EFOY pro and up to +50 °C with 2nd generation EFOY Pro is guaranteed. If this temperature range is exceeded, the unit interrupts the charge function and starts once more fully automatically once the temperature falls. This prevents damage to the fuel cell. Should you use the fuel cell at high temperatures for long periods of time, please contact sales@sfc.com

How does the frost protection mode work?

The fuel cell has an intelligent automatic frost-protection mechanism. It keeps itself warm when temperatures fall below 3 °C when it is connected to a functioning battery and has a supply of fuel.

How much fuel does the frost protection mode consume?

The fuel cell requires approx. 5-10 litres of methanol for dedicated frost protection mode during a five-month winter period in Central Europe.

What must I do if the fuel cell freezes?

If the fuel cell freezes despite all precautions, allow it to thaw switched off in a warm environment over a period of approx. 24 hours before putting it into operation. Please note that a fuel cell's efficiency may decrease when allowed to freeze repeatedly.

Warranty / Repair

Does SFC provide a warranty for the EFOY Pro fuel cell?

The EFOY Pro fuel cell meets the highest quality standards. We guarantee it. For more details go to warranty terms.

When does warranty start?

The purchase date of the new fuel cell on the invoice and its registration with SFC determine the start of warranty.

Can an EFOY Pro fuel cell be repaired if it is defective?

Yes. We can repair your fuel cell at our location in Brunnthal near Munich or in our subsidiary in Rockville, MD USA when necessary. Service Center

Is it possible for me to buy replacement parts and install them myself?

No. The unit is not allowed to be opened by unauthorized persons.

How long does a repair take?

Repairs can generally be performed within a few working days, plus the time required for transportation and the time until the quotation is approved.

How much do repairs cost?

Repair costs depend on the components involved.

Why should I perform a regular update?

A new update is not essential, but fuel cells are being continuously improved and you are welcome to benefit from this. Further information can be found at: Updater

Why do I need the service fluid? What is it exactly?

Service fluid is delivered with your EFOY Pro fuel cell. Thanks to SFC's patented water recovery system, fluid is recovered in a closed circuit. Over a long period of operation with high external temperatures a part of this fluid may evaporate, and the fuel cell will indicate that it requires service fluid. It is recommended to always have a bottle with you. Never fill up more than one bottle, and only when the fuel cell indicates that it really needs it (via the control panel).