FENECON Home 6, 10 & 15
Here you will find current documents for the FENECON Home 6, 10 & 15.
FENECON Home 6, 10 & 15
FAQ — Frequently Asked Questions
Click or tap on the respective question to receive an answer.
What battery chemistry do the FENECON Home systems use and why this one specifically?
Lithium iron phosphate batteries are used for FENECON Home systems. These do not contain toxic heavy metals such as nickel, cadmium, and cobalt. Additionally, all metals used can be recycled up to 100 %.
How loud is the system?
The battery itself does not emit any noise. The power electronics and inverter can cause noise during switching operations. The inverter’s fan is also audible.
Where can I install the battery?
For fire protection and safety reasons, certain parameters must be observed. With the IP55 standard, the battery can also be installed outdoors under a roof, as it is splash-proof.
How long can the battery deliver power?
To protect the battery from deep discharge, it is discharged to approximately 5 % SoC.
Can I charge the battery directly with a PV system?
In principle, all variants of the FENECON Home can be connected to PV systems. Our inverter adapts depending on the situation.
Can I charge an electric car with the battery?
The included FEMS energy management system can control and regulate electric car charging stations. The app required for this is available online via your FEMS installation. More information about the app can be found here. Those who want to charge their car unregulated can connect it to the home network at any time and it will be charged depending on the current power supply from PV, storage, or grid.
What is included with the system?
The standard scope of delivery of the FENECON Home includes the batteries, the energy management system (FEMS), and the inverter.
The system has a modular design. How far can I expand the capacity without problems?
A battery tower of a FENECON 6, 10 & 15 system can include a minimum of 3 and a maximum of up to 14 battery modules, i.e., a maximum of 39.2 kWh usable capacity per tower. If you want to expand even further, it is necessary to set up a second, third, or fourth tower in parallel. The maximum expansion of the system offers 156.8 kWh usable capacity.
What do I do if the battery is not working?
If your battery is not working, please contact our service department. You can reach them by phone at: +49 9903 6280-0 or by email at: service@fenecon.de. Please provide an exact error description and, if available, the error codes.
How much power can the battery deliver?
The output power depends on the installed inverter and the size of the battery. The output power of the included inverter is 6, 10, or 15 kWp, depending on the system.
What do I do when the battery needs to be disposed of?
Batteries that need to be disposed of can simply be returned to FENECON. We will then take care of the disposal of the batteries.
Do the batteries contain cobalt?
No, the batteries do not contain cobalt.
How long do the batteries last?
The manufacturer’s warranty is 10 years. The lifespan can exceed this time many times over.
Is the inverter included in the system?
The inverter is a separate device and is installed near the battery (e.g., above the battery). It is included in the scope of delivery of the FENECON systems.
How heavy are the batteries?
Each battery module weighs 26.5 kg. An additional 27.5 kg must be added per battery tower for the frame and power electronics. (Base 5.5 kg; BMS box 10.5 kg; EMS box 11.5 kg)
How many cycles do the batteries have?
We guarantee 3650 cycles with 80 % capacity. The batteries will certainly continue to work for a long time beyond that.
Is the Home also certified for Austria and Switzerland?
Yes, the FENECON Home is certified for Austria and Switzerland.
Where can I buy the FENECON Home?
The FENECON Home is available from selected electrical installers.
If the master electrician near you does not yet have experience with FENECON products, we will gladly train them.
If you cannot find anyone, please contact us here. We will then find the right electrical contractor in your area for you.
How small can a PV system be with a FENECON Home?
The minimum size of a PV system with a FENECON Home depends on the PV module and is approximately 2-3 kWp.
How long does it take for the battery to be fully charged?
The charging time depends on the charging power and how full the battery is when the charging process starts.
What is the purpose of the FEMS App Write Access Home Storage (FEM710)?
If FEMS is not supposed to take over control of the system, but rather customer-side software, this can be realized with this.
Does the 3-phase sensor need to be purchased separately with the system, or is it included as standard?
The energy meter for the grid connection point is always included.
Is an AC-coupled variant also possible in the Home sector?
Absolutely. We can charge from AC-PV as well as DC, or from both simultaneously.
To record the generation power with AC generators, a FEM111 should be set or the corresponding app should be purchased.
How do I connect the system?
A detailed representation of the system setup can be found here on the website.
Can any heating element be controlled with the "FEMS App Heating Element" or only the heating element offered by FENECON (FEM011)?
Any heating element can be controlled where each phase can be controlled individually. It does not have to be 6kW. That is just the variant we sell. For other sizes, the settings in the app must be changed (during commissioning, by our service team). For heating elements > 6kW, contactors should be installed. Information on this can be found in the installation and service manual.
FEMS is open source. Are there plans to integrate other manufacturers? Are there other advantages for the customer through "open source" besides the fact that products (heating elements, wallboxes…) from various manufacturers (currently offered) can be integrated?
We are continuously integrating additional wallbox and PV inverter manufacturers. Heating elements are actually switched directly by us.
FEMS is not necessarily open-source, but open-source based. The big advantage is that it makes it very easy for independent EMS developers to integrate our products into their EMS solution.
Interested end customers can also develop their own solutions this way.
You advertise that a large part of your workforce are engineers and software developers. Which parts of your product do you produce yourself or are manufactured/assembled in Germany?
The FENECON Home is a product designed and created in Germany. The inverter is an OEM, the batteries are manufactured for us by the world’s largest cell manufacturer (according to our design). The FEMS and associated hardware are programmed and manufactured in Germany, respectively.
What does the FEMS App CHP do? Does the system also charge the electricity produced by the CHP surplus into the battery? What are the requirements of the CHP for control?
The idea behind it is: A CHP must run anyway for heat generation, so we switch it on when generation and SoC are low. However, this is only a switch-on recommendation. More information here.
Can two heat pumps be optimally controlled simultaneously or staggered (residential building/commercial building)?
Yes, this is theoretically possible via an additional external relay board. The threshold values must then be adjusted accordingly in the app so that both heat pumps do not want to start simultaneously.
How should emergency power operation be understood: The inverter generates electricity in emergency power operation, but is also the only inverter that feeds the battery?
Exactly, the directly connected PV system of the FENECON Home inverter generates electricity in emergency power operation and also charges the battery.
If other inverters are still present: Can they also generate electricity in emergency power operation and be consumed (at the time of generation)? Or are the PV inverters out of operation during a blackout?
No, the battery cannot be charged by AC-PV. PV inverters are out of operation in case of a blackout.
Is the AVU box only offered for the Home 6/10 or also for other FENECON Home storage models?
The FENECON AVU, the Automatic Consumer Switch, is not compatible with the Home 20 & 30 system, as it is only designed for 6 to 10 kW.
Since the inverter of the Home 20 already handles 6.66 kW per phase and that of the Home 30 handles 10 kW per phase, we consider the additional expansion to then 43 kW with the AVU to make little sense.
The AVU is necessary to bypass the limited power of the emergency power path of the FENECON Home 10 of "only" 3.3 kW per phase.
For a complete, normal house, 30 kW of power should be sufficient in most cases, meaning the entire house runs through the inverter and then has an even shorter switching time of 10 ms than the already short 2 seconds of the AVU.
For a few seconds, the inverter in the FENECON Home 30 system can even deliver 36 kW.
We assume that with conceivable simultaneity factors > 30 kW, larger individual installations would be connected separately before the inverter.
Further information here.