FAQ go-eCharger HOME+ and HOMEfix

General product information

  • For which car models can go-e charging stations be used?

    Every go-eCharger has been developed in accordance with the currently valid standards and directives for ev charging stations. This results in a high level of compatibility with all electric vehicles approved in Europe. Our chargers are able to charge both battery electric vehicles (BEV) and plug-in hybrid electric vehicles (PHEV). The latest go-eCharger with hardware version V3 (serial numbers start with CM-03-) offers the additional comfort function “simulate unplugging” via the app to reliably wake up vehicles e.g. in connection with PV surplus charging, as not all car manufacturers take into account all relevant standards for charging stations. Actually, car manufacturers would be obliged to improve this with software updates. In order to save our customers the way to the car dealer in the future, we have provided the new comfort function and thus created an alternative for waking up vehicles that goes beyond the valid standard. However, this required an adaptation of the go-eCharger hardware.

  • Do I need to inform my electricity network operator before charging with the go-eCharger?
    Do I need a permission from the network operator?

    Whether you have to register your charging station for electric vehicles at the electricity network operator and also have it approved by him depends on the individual specifications and laws of the different European countries.

    In Austria, you do not currently need to inform the electricity network operator about the go-eCharger HOME+, neither do you need a licence, because it is considered an intelligent charging cable. In contrast, you need to register the go-eCharger HOMEfix by an electrician. However, in a few federal states there is an obligation to notify, for example due to building regulations. Therefore please inform yourself at the responsible authorities.

    For Germany, most of the relevant regulations for the registration and approval of charging boxes are contained in the TAR Low Voltage (VDE-AR-N 4100:2019-04). According to this, every charging station from 3.6 kVA in Germany has to be registered online or by filling in a standardised VDE form at the relevant power network operator before putting it into operation. This makes it easier for the network operator to estimate how much electricity he has to provide in a local distribution network and to take precautions against overloading. Up to 12 kVA charging capacity (like the go-eCharger HOME+ 11 kW or the go-eCharger HOMEfix 11 kW), you only need to inform the network operator where you are using the charging box. You can then charge your vehicle immediately.

    If the charging station has a capacity of more than 12 kVA (like the go-eCharger HOME+ 22 kW or the go-eCharger HOMEfix 22 kW) you have to wait for the approval of the German electricity network operator after registration. The operator will check whether the power lines and fuses at the registered location are sufficiently dimensioned to operate the charging station. If you are not sure about this, ask a qualified electrician in advance. Note: Some network operators require an electrician to submit or at least sign the registration documents for the charging station.

    A German network operator is allowed up to two months to approve the charger. Often, however, you will receive an answer within one to two weeks. As soon as you obtain the approval, you have four months to put the charging box into operation for the first time. If you do not receive approval, the network operator will inform you of the changes you need to make at your own expense to the house connection so that you can still use the charging station. We have checked with several major network operators: they will only refuse your permission to use a charging station in exceptional cases.

    If you want to use the go-eCharger in other European countries, please contact your local electricity network operator in advance to find out whether the charger requires registration or approval.

  • What are the advantages of the go-eCharger?

    The go-eCharger HOME+ and HOMEfix are charging stations which are unrivalled in terms of features in combination with the price-performance ratio. From the possible PV-connection (via API connection) to static load balancing and timer as well as RFID and personalization, the device leaves hardly any wish unfulfilled. The advantage of the go-eCharger HOME+ is that the box can even be taken along. This allows you to charge quickly at other locations, e.g. on vacation or at relatives homes (socket and possibly suitable adapters needed), if no other charging station is available there.

  • What is the maximum charging capacity of the wallbox I should choose - 11 kW or 22 kW?

    Whether you should choose a go-eCharger in the 11 kW or 22 kW variant depends on your individual requirements. You could simply ask yourself the following questions before making your purchase decision:

    • Is the planned EV capable of charging with up to 22 kW alternating current?
    • If not: If more cars with 22 kW charging capacity come onto the market, will you possibly purchase a corresponding vehicle in the future? Or are you planning to purchase additional electric cars in your household, one of which could charge with more than 11 kW?
    • Does the car have a high battery capacity or will you buy one with a higher capacity later?
    • Do you drive your car many kilometres on some days of the week and are there situations when you do not have much time to charge?
    • Do you want to use existing 22 kW sockets when travelling (applies to go-eCharger HOME+ only)?
    • Is your house connection sufficiently dimensioned so that you can operate a 22 kW charging station?

    Even if your vehicle can currently only charge with 11 kW, a 22 kW wallbox would be a future-proof solution. If you decide later on for a faster charging electric car with higher battery capacity, you will not need a new wallbox. As a 22 kW go-eCharger can also be operated permanently at 11 kW, you are not limited in your choice of future electric vehicles. If your house connection is not dimensioned for high charging currents and the expansion would involve high costs, the 11 kW version of the go-eCharger would be the right choice.

  • Which grant do I receive for a charger for my electric vehicle?​

    In Austria and Germany there are different subsidies for go-e Chargers. You can find information about this programmes here.

    Some more European countries offer subsidies for charging stations. In some cases, these are also only granted locally. The legal situation for subsidies for charging stations varies greatly. We recommend that you enquire locally whether and under which conditions you receive a grant for a mobile charger or a stationary charging station.

Installation

  • Do I need an electrician for the installation?

    The version go-eCharger HOME+ with plug is plug-and-play capable and can be simply plugged into an existing socket. The variant go-eCharger HOMEfix for permanent installation has to be connected by an electrician. In every case, we recommend to ask an electrician to control your already existing electric installation for sufficient dimensioning or to install your new go-eCharger.

  • Are structural modifications necessary for the installation of the charging station?

    No, only the wall bracket has to be screwed on.

  • Is weather protection necessary?

    Basically, weather protection is always an advantage, it is not really necessary. The plastic is particularly UV-resistant and the device is sufficiently protected with IP54 for all weather conditions. The go-eCharger is suitable for outdoor operation up to a temperature of +40° C. Therefore, a location without direct sunlight is recommended. In direct sunlight, it is possible that the output power of the device is automatically reduced to avoid excess temperatures.

  • Is an external RCD type B required upstream of the go-eCharger in the house installation?

    The go-eCharger has a built-in RCD protection module with direct current detection (30 mA AC and 6 mA DC). Therefore, only a type A RCD is required on the building side, unless local regulations deviate from this. Regardless of this, a miniature circuit breaker has to be connected upstream of each charger.

  • Which connection cable (wire cross-section) is required to connect the charging station?

    For 32 A we recommend a cable cross-section of at least 6 mm² for surface-mounted cables (not laid in the wall), 6-10 mm² for cables in installation pipes and 10 mm² for cables in thermally insulated walls. For 16 A, we recommend a cable cross-section of at least 2.5 mm² for surface-mounted cables, 4 mm² for cables in installation pipes and 10 mm² for cables in thermally insulated walls. However, the electrician has to decide for himself according to the local situation. Note the simultaneity factor! The simultaneity factor must be set to 1 when calculating the cable cross-section, which means that the electrician must assume that the cable is always fully charged.

  • How should the upstream miniature circuit breaker be dimensioned by the electrician?

    The circuit breaker is a fuse that switches off in case of overload. It protects the line from damage caused by heating as a result of excessive current. It is available in our shop.

    32A three-phase = circuit breaker 3- or 4-pole 32 A (go-eCharger HOME+/fix 22 KW).
    16A three-phase = circuit breaker 3- or 4-pole 16 A (go-eCharger HOME+/fix 11 KW).
    32A single-phase = circuit breaker 2-pole 32 A (go-eCharger HOME+/fix 22 KW).
    16A single-phase = circuit breaker 2-pole 16 A (go-eCharger HOME+/fix 11 KW).

    The circuit breaker can be used with characteristic B or C.

  • Which power input is required per charging station?

    You can freely select the current at the go-eCharger HOME+/HOMEfix 22 kW from 6 A to 32 A (depending on the fuse of the household installation) and at the go-eCharger HOME+/HOMEfix 11 kW from 6 A to 16 A and also limit it to a low power. It is also possible to limit the current with the app so that it cannot be exceeded with the quick select button.

    If you wish to use the go-eCharger in the 22 kW variant with the full charging power, a fuse of 32 amps is required, in the 11 kW variant a fuse of 16 amps is required.

    The more amperes are set, the faster the car charges. With lower amperages, you charge more sustainably, which can have a positive effect on the battery life and the stability of the power grid. The actual charging power is limited by the car and can therefore be lower.

  • Is it possible to connect the go-eCharger with two-phases? Can the number of phases used for charging be adjusted on the charger?

    A 2-phase connection of the charger is not possible. The go-eCharger can only be connected in single or three phases. The device checks the phases at the entry and goes into fault mode (PHASE fault) if the connection is 2-phase.

    Depending on the specification of the onboard charger of an electric vehicle, the go-eCharger charges 1-, 2- or 3-phase. Ask your car dealer for the exact charging power and the number of phases used to charge the vehicle. For go-eChargers with serial numbers starting with CC1- or CM-02-, the number of phases to be used for charging is not changeable. However, single-phase charging can be forced with an appropriate adapter (only possible for go-eCharger HOME+) or single-phase charging cable. For go-eChargers with the latest hardware (serial number starts with CM-03-), it is possible to switch between single-phase and three-phase charging in the app.

  • Is there anything to consider when installing in a (underground) garage?

    The go-eCharger is suitable for charging gassing vehicle drive batteries (e.g. lead acid batteries) only in well ventilated rooms. Please consult your vehicle manufacturer if you are unsure.

Using the charger

  • When is the go-eCharger HOME+ ready for use?

    Immediately after plugging in, this is made possible by the Plug & Play system.

  • How do I start charging?

    Simply plug the go-eCharger HOME+ into a socket or have the go-eCharger HOMEfix connected by an electrician, plug the type 2 cable into the car and the charger to start the charging process.

    Please note the Charger’s default setting: Access control/charging mode = Open.

    You can change this setting via the app, which means that the charging process will not start until you have unlocked your charger via app or RFID chip.

  • How do I stop charging?

    Either via the app (stop charging via the button of the tab “Charging”) or unlock the charging cable on the vehicle side.

  • What to bear in mind during the charging process?

    Please do not disconnect the go-eCharger from the power supply during charging. Please also note that the type 2 cable can only be unlocked as long as the go-eCharger still has power; except for devices with the latest hardware (serial number starting with CM-03- / hardware version V3) when set accordingly via the app.

  • Do I need the app to charge?

    No, the charging power can also be adjusted via the button directly on the device (5 predefined charging levels). If the charger is connected to a car via a type 2 cable, the charging process starts automatically in the default setting. The go-eCharger can therefore also be used without an app. If you want to change the basic settings of the device, use comfort functions, read the internal electricity meter or control the charger remotely, you need the go-eCharger app. Than you can control the unit from close range via the integrated hotspot. For remote control of the charger and for some comfort functions, a WiFi connection of the device is essential.

  • How can I control a go-eCharger using multiple smartphones?

    To do this, simply download the go-eCharger app for your smartphone and, from the second smartphone onwards, add your charger via the blue “+” in the app with the option “Add an already set up go-eCharger”. Enter the token of the respective charger (if available on the reset card), otherwise the device password defined by yourself (from chargers with serial number CM-03- / hardware version V3), in the app.

  • Does my charger need to be connected to the WiFi to use the app?

    No, because the app can also be operated via the hotspot integrated in the Charger. Only remote control and some functions such as electricity price exchange (aWATTar) or load balancing are not possible without WiFi.

  • Can the charging power be adjusted manually?

    The charging power can be set either by button (5 predefined values) or by app. The button values can be configured in the app as desired, between 6 and 16 or 32 amps (depending on the maximum charging power of the charger – 11 or 22 kW). The charging power can also be changed during the charging process using the app.

  • Can the LED display be deactivated?

    The brightness can be changed in the app. Additionally the LEDs can be switched off after 10 seconds in standby mode.

  • Where are the charged kilowatt hours (kWh) displayed?

    In the app, you can view the amount of electricity charged during a charging process as well as the total amount of kWh charged. This information can be found in the “Charging” tab of the app. In addition, charging energy can be displayed for all user accounts (RFID chips – maximum 10). In the latest version of the go-eCharger (serial numbers start with CM-03- / hardware version V3), a detailed charging history can also be downloaded.

  • Does the charging station have a calibrated meter (MID certification)?

    Neither the go-eCharger HOME+ nor the go-eCharger HOMEfix has an MID-compliant meter (Measurements Instruments Directive). In certain countries a MID-certified meter is required to sell electricity.

  • Does the charging station have anti-theft protection?

    The Charger is delivered with a U-piece, which can be attached to the wall. This piece can be attached directly above the charger, which means that the unit can no longer be removed from the wall bracket. In addition, a padlock can be attached (not part of the scope of delivery).

  • Does it make sense to reduce the charging capacity in order to extend the life of the battery of my electric vehicle?

    From our experience, the charging capacity has a hardly noticeable effect on the ageing of the battery, especially when charging with alternating current. There are many other statements circulating in the internet, but they are mostly based on old battery technology and low battery capacities.

    The so-called C-rate is a good reference point for a charging capacity that is gentle to the battery. This describes the relation between charging current and battery capacity. Let’s assume you charge your car with 22 kW and the battery has a capacity of 22 kWh. Then C = 1. If the battery capacity is halved and the charging current is the same, C = 2. The higher the C rate, the greater the effect of the charging process on the lifetime of the battery. However, this can only be determined at very high mileage. At a C rate of 1, a shortened battery life is hardly noticeable.

PV connection / electricity price exchange / load balancing

  • Which communication interfaces does the charging station have?

    There is a HTTP REST API that can be used via the local WiFi connection. An API is an open interface so that other smart devices can communicate with the charger. Furthermore, the API Modbus TCP is integrated in the go-eCharger from firmware version 0.40 onwards. Like the go-e network operator API, this enables authorised access to the go-eCharger by the electricity network operator for the for grid-serving power control.

  • Can I use surplus power from my photovoltaic system when charging with the go-eCharger?

    With the go-eCharger you can use surplus electricity from a photovoltaic system to charge your electric car. The prerequisite for this is the connection of the charger to an additionally required energy manager, which has an open API interface like the go-eCharger. Communication between the Charger and the inverter of the PV system can be established via this energy manager.  Programming knowledge is required for set-up. Compatible energy managers include Home Assistant, ioBroker, openHAB, openWB or Loxone. If you are not able to program the system yourself, you can ask a solar technician to do so. go-e does not offer a ready-to-use connection.

    You can find the API documentation here.

  • How does charging my electric car via the electricity price exchange work?

    If you want to use the electricity price exchange function of the go-eCharger and thus benefit from the advantages of hourly electricity exchange prices, you need a smart meter. If this is not yet installed, please contact your network operator. You will also need to change from your current electricity provider to our partner aWATTar.

    The actual charging process with aWATTar can be set via the go-eCharger app. When using this function, the go-eCharger automatically searches for the cheapest consecutive hours for charging the electric vehicle or the hours in which the price falls below the defined price level. This function is currently only available in Austria and Germany.

  • Is additional hardware required for static load balancing?

    For static load balancing with multiple chargers you do not need additional hardware. The charging stations can be grouped into a load balancing group via the app, which allows the stations to communicate with each other via the cloud (WiFi connection required). As a result, the performance of the individual chargers is automatically regulated down or up depending on the number of vehicles being loaded. In the app, priorities can be set for the individual charging boxes.

Access control / RFID

  • Can I lock my charging station for other users?

    The access control can be set via the app in such a way that an RFID identification is required before charging. If the identification is unknown, the charger is not released for charging.

  • How many RFID cards/chips can be registered?

    The go-eCharger HOME+ and HOMEfix can register up to 10 cards/chips.

  • Which RFID cards/RFID tags can I use? Can I use any RFID-card?

    Usually any RFID card or RFID chip can be trained. So you can also use an EC/bankomat card, for example. Should it not be possible to train the RFID card, it doesn’t transmit at the required frequency of 13.56 MHz.

Maintenance and care

  • Are inspections of the devices necessary?

    No, the chargers from go-e are maintenance-free.

  • What to do in case of service? How do I proceed if I suspect a defect of my go-eCharger?

    If you have a technical problem with a go-eCharger and have not found a solution in the user manual, the FAQ or the troubleshooting guide, you should first contact our technical support. This is possible by e-mail, support form or telephone. In many cases, we can solve the problem without the need for repair.

    In the service case, before disassembling a possibly defective go-eCharger, contact go-e’s technical customer support in any case so that they can initiate the necessary steps for you. This also helps to avoid unnecessary costs that we have to pass on to our customers if it turns out during the course of the service case that the device is working perfectly and no repair is necessary.

  • How can I clean my charger?

    Wipe the appliance with a cloth moistened with water. Please do not clean with a high pressure cleaner or generally under running water.

  • Where can I see the current firmware version and where can I find firmware updates?

    Information about the firmware and updates (software updates) can be found in the app in the “Internet” tab.

  • How do I update my software?

    To perform updates, an active connection of the Charger to the Internet is required. Once connected to the internet, possible updates are visible in the “Internet” tab of the app.

  • Which fuse do I need for the Charger?

    You need a 2 A ceramic fuse with a breaking capacity of at least 1500 A (important!).
    Such fuses are available in our shop.