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Full Service Solution

With its complete portfolio, chargeBIG is a provider of charging hardware and load management, charging point operator and mobility service provider. On customer request, the implementation of a full-service solution for individual charging needs including professional consulting, installation, maintenance, service, calibration-compliant billing and the operation of the charging points is offered.

Load management

The different variants of chargeBIG’s load and energy management:

Intelligent and dynamic load management:

  • Consideration of the available power at the balance point (house or grid connection)
  • Integrated unbalanced load detection and avoidance
  • Control with the charging strategy: “first come, first serve
  • Fast enough charging with single-phase charging powers between 2 – 7 kW.
  • Integration of unregulated 22kW charging points (max. 2 or 4 charging points on 30 or 24 single-phase charging points in one charging cabinet)
  • Eco and premium charging (dynamic charging power between 2 – 7 kW or guaranteed 7 kW charging power)

Grid-optimized load management:

  • Based on market prices or the supply of renewable energies
  • Control and regulation on grid voltage and grid frequency (without remuneration)

Static load management:

  • Control according to fixed performance targets

Load and energy management

Via controlled load and energy management, the chargeBIG charging infrastructure can be used to limit the max. total load in a building. Costs for excessive peak power can thus be avoided. chargeBIG can co-regulate other loads by prioritizing these loads, such as the kitchen or test bench, and reducing the e-vehicles as a controllable load in the charging current. If the chargeBIG system is not to regulate autonomously, it can be integrated into the building control system and react to load specifications within a second.

Application example of load and charge management with other consumers in the network:

Avoidance of unbalanced loads


Overview billing options


Maximum flexibility is possible with regard to the activation of charging points. Charging points can be activated without authentication or via app using QR code scan or Near Field Communication (NFC). The chargeBIG app for iOS and Android or the universal web app can be used on the private smartphone, the driver device or via the service smartphone. Integration into fleet management systems or individual interfaces for various software connections can be realized. chargeBIG is compliant with calibration laws and thus charging current can be charged to third parties. In this case, charging processes are paid ad-hoc via common means of payment such as credit card or PayPal. The app offers returning users the option of creating a user account and storing means of payment. This means that the charging process can be
can be started with just a few clicks. For fleet customers, one-time visitors or company car charging at the employer’s site, chargeBIG also offers access codes for activation and cost center charging.

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App advantages

For the end user:

  • Easy usability and appealing user journey for the end user
  • Activation within a few seconds via Plug & Charge by App (NFC)
  • Choice between Eco and Premium charging rate (if offered by operator)
  • Billing via credit card (Visa, Mastercard, American Express), Paypal and SEPA direct debit
  • Access code for flat-rate permanent charges, visitors or for cost center charging

For the operator:

  • Payment processing with end user or employee via chargeBIG service.
  • Choice of different payment methods
  • Choice of individual tariffs for kWh accurate billing with or without startup or time charges
  • White labeling of the chargeBIG app possible including individual color scheme, integration of company logo, choice of background images, etc.
  • chargeBIG Dashboard of the charging infrastructure for control, reporting and integration of energy management systems

Further billing options


Via eRoaming, users have access to the public charging points of various operators. The charging app provider used (mobility service provider), with whom the user has concluded a contract via an e-roaming platform, offers a corresponding charging tariff at the charging points. Wide-ranging charging networks are created via e-roaming.
The chargeBIG charging infrastructure can be integrated into the eRoaming charging network via the use of additional QR codes.


A credit card terminal that can also be activated and billed via RFID cards can also be offered. A terminal is recommended at public locations.
The obligation to provide credit card terminals is to be postponed until 2024. The German government has again amended the charging station ordinance to extend the deadline for the mandatory implementation of a credit card terminal by one year to July 1, 2024.

Operation & Dashboard

In order to bill charging processes in compliance with calibration regulations, chargeBIG relies on its own proprietary backend. The user’s smartphone is used to display the progress of the meter. A lot of technical data is transferred between the charging hardware and the chargeBIG back-end, for example temperature data, information on overvoltage protection, data on integration into the fire alarm system, etc.. The back-end creates the billing documents for the users, transmits the payment data to the payment processor, provides reporting on the charging data and provides the interface to the German Federal Network Agency (BNetzA) as well as to the transparency software S.A.F.E. eV.

The chargeBIG backend can be connected to other backends via appropriate standards such as the OICP standard (Open Intercharge Protocol) or the OCPI standard (Open Charge Point Interface). This makes the chargeBIG charging points eRoaming capable.

Regular reporting enables traceability of the charged kWh per user, vehicle and location. The combination of different user groups (fleet, employees, public, etc.) at the installed charging hardware is also possible in the chargeBIG system.
Via the chargeBIG dashboard, users and access codes can be managed accordingly, current charging processes and potential errors at the charging points can be viewed, tariffs for the charging current can be defined, energy data can be read out and reports can be downloaded.

The chargeBIG charging hardware can be operated via third-party backends using the OCPP 1.6J interface. The OCPP1.6J connection is implemented using another router (private APN).
The chargeBIG backend runs in parallel during a charging session in order to display the charging process in compliance with calibration regulations.

Please contact us about the already implemented OCPP interfaces. Many of the common charging infrastructure backends have already been connected to the chargeBIG hardware.

Maintenance & Service

With a qualified partner network of specialist electricians, chargeBIG realizes the annual mandatory maintenance of charging points as a general contractor. The annual maintenance includes the visual inspection, testing according to DIN VDE 0701/702, according to DGUV V3, according to DIN VDE 0105-100, testing of the PWM signal, testing of the backend connection, the E-Check eMobility, the repeat test of the permanently loaded circuits as well as the documentation of the maintenance. Due to the central arrangement of the components in the chargeBIG system can benefit from minimal maintenance costs.

Support, repair or fault clearance services are offered at different service levels via the qualified partner network.

In addition, chargeBIG offers a reliable service and support hotline for B2B and the end user. Since the chargeBIG system offers hardware and software from a single source, any faults that may occur can be quickly and remotely rectified. Service errors are avoided in particular because chargeBIG uses a fixed charging cable. The charging cable is always released on the vehicle side and the malfunction of a locked own charging cable is therefore not given.


The charging infrastructure does not necessarily have to be purchased. Companies often have different budgets for OPEX (operating expenses) than for CAPEX (capital expenditures). Often they do not want to make certain investments themselves. A possible reason could be that these are too far away from the core business. We offer the right solution for this: For private parking areas, we offer charging infrastructure not only as a purchase, but also as a leasing model. If a customer wishes to build charging infrastructure without the investment of CAPEX, the charging points can be offered as turnkey leasing. The monthly rate depends on the market conditions at the time the contract is signed. The leasing period is usually 8 years. Our offer goes one step further for (temporarily) public charging infrastructure: Temporary public also describes charging infrastructure at the employer’s premises, which is available to the public at night or on weekends, for example. For a one-time down payment, we take care of everything else, such as installation, maintenance, operation, billing, power supply contract, etc. There are no additional ongoing costs. There are no additional ongoing costs for the customer. This model is called “Charging as a Service (CaaS)”.

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