EV Charging Compatibility and Interoperability: Future Trends in E-Mobility

Compatibility Issues: A Shared Industry Challenge

In Q1 2025, EV charging software provider Driivz conducted a survey across North America and Europe, revealing that vehicle-to-charger compatibility issues accounted for 45% of charging failures—the top cause. The study involved 300 senior professionals from Charge Point Operators (CPOs) and Electric Vehicle Service Providers (EVSPs), who agreed that poor compatibility not only frustrates drivers but also slows the growth of charging networks.

Vehicle-specific compatibility issues (45%) was as the top of issues preventing successful EV charging sessions for drivers.

Graphic: Driivz

What Is Charger Compatibility?

Compatibility refers to the seamless interoperability between EVs and chargers across physical connectors, communication protocols, and authentication systems. Standards vary by region:

• North America largely uses CCS1 and the increasingly adopted NACS;
• Europe relies on CCS2 and Type 2;
• On the protocol side, standards like OCPP and ISO 15118 play a critical role.

When connectors, protocols, and security mechanisms align, the “handshake” between the vehicle and charger completes smoothly. Otherwise, drivers may face issues like failed session starts or unexpected charging interruptions.

Why Does Compatibility Matter?

Compatibility goes far beyond simply “charging or not charging.” It underpins both user experience and network efficiency:

• Higher Success Rates: Prevents failed sessions caused by mismatched connectors or unsupported protocols, building user confidence.
• Operational Efficiency: Reduces support requests and maintenance overhead, ensuring more reliable network operations.
• Future-Proof Investments: As standards like NACS rapidly gain traction, only chargers with broad compatibility can remain relevant and protect infrastructure ROI.

In short, compatibility has become a defining benchmark of charger quality and brand strength.

Why Choose Injet New Energy Chargers?

As compatibility remains one of the biggest challenges in EV charging, Injet New Energy stands out with its design philosophy of “Open Access × Extreme Compatibility,” delivering reliable and seamless charging for both operators and drivers.

• Full Protocol Coverage, Higher Success Rate
With comprehensive support for mainstream vehicle communication protocols, Injet chargers achieve a charging success rate above 90%. Drivers enjoy true plug-and-charge convenience, with fewer on-site issues, across both North American and European EV standards.

• Certified and Secure by Design
OCA-certified, fully compliant with OCPP1.6J and Level 3 security. Injet will support OCPP 2.0.1 in Q4, 2025. ISO 15118-2 Plug & Charge ensures automatic vehicle recognition and session start—offering drivers a truly seamless, “frictionless” charging experience.

• Smart Connectivity and Remote Management
Built-in secure communication and cloud integration enable full remote control, data reporting, status monitoring, and diagnostics. This one-stop connectivity makes network integration and operations significantly easier.