[!CAUTION] Working with high voltage is dangerous. Always follow local laws and regulations regarding high voltage work. If you are unsure about the rules in your country, consult a licensed electrician for more information.

Disclaimer and Safety notes

[!WARNING]
The entire Battery-Emulator project focuses on re-using EV batteries for stationary storage. The following support page for CHAdeMO connection to the in-vehicle battery is only to be used for emergencies, where the grid is down and you need backup power. It is not intended for daily usage, the following info is ONLY for emergency situations!

[!CAUTION]
🔥 The CHAdeMO connection requires a genuine CHAdeMO cable. This is to prevent electrical shock to the person plugging in the vehicle. Using 3d-printed parts where you are close to 500VDC is potentially lethal 💀 Do not use anything other than a genuine connector! Genuine connectors known to work will be listed in the wiring and parts detail below.

Be mindful that there is inherent risk to the rest of the vehicle and that you assume responsibility for that risk. Do not attempt on a vehicle you do not own. Be aware that some Nissan Leaf vehicles have experienced contactor welding when using other V2X equipment like Setec inverters; it is a possibility here even despite our best efforts to avoid such issues.

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Overview

Supported CHAdeMO vehicles

Generally: CHAdeMO vehicles v1.0 and forward are OK for V2X.

Make and Model	Supported	Tested	Note
Nissan LEAF 2011-2012	No	No	These implement CHAdeMO v0.9 and do not support V2X.
Nissan LEAF 2013-2019	Yes	Testing	These implement CHAdeMO v1.0-1.1 V2X, albeit with some unique idiosyncrasies
Mitsubishi i-MiEV	Maybe	No

Required major components

• CHAdeMO plug,
• Isabellenhütte IVT shunt (IVT-Modular or IVT-S),
• 3 x DC contactors (Precharge, Positive, Negative),
• Precharge resistor,
• 2 x DC fuses,
• GPIO connections, logic level converter...

Connection diagram

[!CAUTION]
Use only OEM CHAdeMO cables. Do not compromise your safety by using a 3d-printed connector. Your life depends on it.

• Connect pin 8 (CAN-H) to LilyGo CAN_H
• Connect pin 9 (CAN-L) to LilyGo CAN_L
• Connect pin 5 (HV-) to inverter -
• Connect pin 6 (HV+) to inverter +
• Connect pin 1 (Protective conductor) to Protection Ground and Ground (for 12V supply)
• Connect pin 7 (Connector proximity detection) to Ground (for 12V supply)
• Connect Start/Stop switch to LilyGo GPIO - CHADEMO_PIN_7 (not connect to CHAdeMO connector)
• Pin 2/10/4 should follow activation sequence for CHAdeMO (TODO add this info here)