Charging at home · 4 min read
What is ISO 15118 and Should I Care?
The technical name behind smarter EV charging — Plug & Charge, bidirectional power and why it matters for your next charger.
The confusing name behind smarter EV charging
ISO 15118 is a technical name for a simple idea: it allows your electric vehicle and charger to communicate with each other. This communication enables smarter charging features that go beyond simply transferring electricity.
A simple analogy
Think about Bluetooth. Years ago, your phone could still make calls without Bluetooth. Today, Bluetooth allows your phone to connect automatically to your car, headphones and other devices. ISO 15118 works in a similar way — your EV can still charge without it, but compatible vehicles and chargers can communicate more intelligently.
What can ISO 15118 enable?
- ✓Plug & Charge — plug in and go, no app or card needed
- ✓Automatic vehicle identification
- ✓Smarter charging schedules
- ✓Better energy management
- ✓Vehicle-to-Grid (V2G)
- ✓Vehicle-to-Home (V2H)
What is ISO 15118-20?
ISO 15118-20 is the latest version of the standard. It improves support for bidirectional charging, allowing electricity to flow both into and out of compatible vehicles. This technology could allow EV owners to use their vehicle battery as part of their home's energy system.
Do I need ISO 15118 today?
Not necessarily. Most EV owners will continue charging normally without noticing. However, if you are installing a charger that you expect to keep for many years, choosing one compatible with ISO 15118-20 could help future-proof your investment.
Did you know?
Some future EV charging systems could allow drivers to simply plug in and automatically authenticate themselves, without using an app, card or payment screen.
Carautonomy tip
You don't need to understand every technical detail. Just remember: ISO 15118 helps your car and charger communicate more intelligently.