EV chargers and your Wi-Fi

Outside, through a wall, and expected to work overnight.

What this kit needs from a network

2.4 GHz client mounted outside, through at least one external wall.

Bands: 2.4 GHz only on most models. It will not see a Wi-Fi name that is 5 GHz only, and setup fails silently if your phone is on the 5 GHz half of a split network.
How it's found on the network: Cloud-based; scheduling and cheap-rate charging depend on it staying online.
Background discovery traffic: Low.
Guest networks: Setup fails.
Separate IoT network (VLAN): Fine on an IoT network.

• Get the installer to check signal at the charger position before drilling.
• Many chargers also take a mobile SIM — worth it if the wall is thick.
• Stand next to your router while you set it up, then move the gadget to where it lives.
• Put your phone on the 2.4 GHz network name for the setup, or use one name for both bands so the phone can follow.
• If your router splits bands into two names, turn the 5 GHz one off for five minutes rather than fighting it.
• Turn mobile data off on your phone during setup — some apps quietly use it and never find the gadget.

• A mesh box in the room nearest the charger, or an outdoor unit in the garage, is the usual fix.

Ohme EV charger 60/100
Sits outside on a wall or in the garage — the furthest, thickest-walled spot in most homes.
Most common complaint: Charger loses Wi-Fi and misses the cheap overnight rate.
myenergi zappi charger 58/100
Uses a small hub indoors to reach the charger, so problems are usually between hub and charger, not hub and router.
Most common complaint: App shows the charger offline even though it charges the car fine.

Tell us what's happening in your own words — speak it, type it or send a photo.