What you need before touching anything
- Access to the setting. The manufacturer's app with your account, the charger's web interface (by its IP) or installer software. Some (Alfen) need the owner password the installer holds.
- Your platform's URL, the charger identity and its password. On askacharge.com, Chargers → Add shows the full URL and the password ready to copy; the password is required (Security Profile 2) and is shown only that once.
- The charger registered on the platform with that identity, before changing the URL: otherwise the server rejects the connection and it looks as if the URL is wrong.
- Stable internet at the charger: 2.4 GHz Wi-Fi with good signal, Ethernet, or a SIM with the right APN. Most "it won't connect" cases are this.
Guides by brand (31 manufacturers that open up)
WallboxPulsar Plus, Pulsar Max, Pulsar Pro, Commander 2, Copper SBAlfenEve Single S-line, Eve Single Pro-line, Eve Double Pro-line, TwinAutelMaxiCharger AC Lite, AC Wallbox, AC Elite, AC UltraGrizzl-EGrizzl-E Smart, Grizzl-E Smart v2 (North America)V2CTrydan, Trydan ProCircontroleNext Elite, eNext Park, Raption, Wallbox eHome (with communications module)ZaptecGo, Go 2, ProEaseeHome, Charge, Charge Core, Charge Lite, OneKEBAKeContact P30 x-series (and c-series as clients), P40ABBTerra AC (W7, W11, W22)Schneider ElectricEVlink Pro AC, EVlink Smart Wallbox, EVlink ParkingTeltonikaTeltoCharge (all variants)IngeteamINGEREV Fusion Wallbox, Fusion Street, RapidOrbisViaris Uni, Viaris Combi+, Viaris CityWebastoUnite, Unite MID, Next, PureOpenEVSEOpenEVSE, EmonEVSE (ESP32 WiFi module)SiemensVersiCharge 48A, VersiCharge Blue 80A, VersiCharge IECgo-eCharger Gemini, Gemini flex, Gemini 2.0, Pro, HOMEfix/HOME+ (V3)EtrelINCH Home, INCH Pro, INCH DuoEVBoxElvi, BusinessLine Gen4 (Everon closed 1 Dec 2025)myenergizappi v2.1 (built-in Wi-Fi/Ethernet)VestelEVC04 (AC7, AC11, AC22; also Home Smart and other-brand units built on the EVC04)MENNEKESAMTRON Professional / Professional+, AMEDIO Professional / Professional+, AMTRON Charge ControlABLeMH2 and eMH3 (Controller or standalone), eM4 (Controller and Single)AlpitronicHypercharger HYC50, HYC150, HYC200, HYC300, HYC400 (DC fast charging)CircutorURBAN T22, URBAN T22-C2, URBAN WBDeltaAC MAX SmartFroniusWattpilot Go, Wattpilot Home, Wattpilot FlexHuaweiFusionCharge AC (SCharger-7KS-S0, SCharger-22KT-S0)GAROGLB+, GTB+, Twin+, LS4, Entity ProSMAEV Charger Business
Brands that do not open up (and what to do)
They have OCPP on the datasheet or in the firmware, but give the owner no field for the URL. Each page says what there is as of today, what has been tried and what alternative remains.
TeslaWall Connector Gen 3, Gen 3 MID, Universal Wall ConnectorChargePointHome Flex (CPH50); CT4000/CP6000 commercial stations on the ChargePoint networkEmporiaEV Charger (Home, 48 A), Pro EV ChargerPod PointSolo 3 (no OCPP), Solo 3S (OCPP in firmware, no published field)OhmeHome Pro, ePod, GoJuiceBox (Enel X)JuiceBox 32/40/48, JuiceBox Pro, commercial units (Enel X Way shut down in North America in October 2024)EnphaseIQ EV Charger, IQ EV Charger 2FLOSmartTWO, CoRe+ (FLO network)BlinkIQ 200, Series 7/8/9 (OCPP inside; Blink sets the server)
If your brand isn't here
The procedure is always the same; what changes is where the setting lives: look in the manufacturer's app, in the charger's web interface (by its IP) or in the installer software for a section called OCPP, Back office, Central System or Server. You need to be able to enter the URL and, nearly always, the identity. If the field is locked or missing, the manufacturer has tied the charger to its own platform: read what to do when the manufacturer locks or switches off its server.
Related reading
- OCPP errors: why your charger won't connect or charge, and how to fix it
- Your charger manufacturer shut down: how to get back in control
- Charge point management software: what it is, what it costs and how to choose
- Your EV chargers in Home Assistant, without giving up billing
- askacharge.com technical documentation (OCPP, API)