7kW, 11kW or 22kW charger: which power should you choose to charge and share it?
Your charger's power directly determines charging speed — and so the number of sessions you can fit in if you share it. Here are the concrete differences between 7kW, 11kW and 22kW.
7.4kW charger (single-phase): the single-family home standard
A 7.4kW charger can fully charge a 22kWh battery in around 4 hours, or a 50kWh battery in around 7 hours — roughly 40 to 50km of range recovered per hour of charging. It's the most common power output in single-family homes, compatible with a standard single-phase electrical setup.
11kW charger (three-phase): the speed/cost compromise
An 11kW charger delivers around 11kWh per hour, bringing charging time for a 50kWh battery down to around 4 to 5 hours. It requires a three-phase connection, however, which means extra electrical work compared to a single-phase installation.
22kW charger (three-phase): the fastest, rarely found at home
The 22kW charger offers the fastest charging, but it's very rarely installed at home: it requires a reinforced three-phase connection, often beyond what a standard residential electrical setup can support without major work. It's mostly relevant for collective or high-traffic professional installations (hotels, business car parks).
What impact does this have on your earnings if you share your charger?
The faster the charge, the more sessions you can fit into the same time slot — a direct factor in your potential earnings. That's why a 7.4kW charger generally pays for itself faster than a simple reinforced socket: the extra upfront cost is often offset by a higher number of sessions. Full pricing by power output is in our <a href="/prix-installation-borne-recharge-maison">guide to charger installation prices in 2026</a>.
Our recommendation based on your use case
- Single-family home, occasional sharing → 7.4kW, the best cost-to-use ratio.
- Co-owned building or heavy use → 11kW, to reduce wait times between users.
- Hotel, campsite, high-traffic business car park → 22kW, to maximize the number of possible charges per day.
