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Renault Zoe Gen1~

Zoe Generation 1 batteries are fully compatible with the Battery-Emulator.

Variants of the Zoe~

There are 3x batteries available for the Zoe, this page focuses on the Gen1 22/40kWh batteries.

Zoe 41kWh pictures and pinout~

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Testing a battery before purchasing~

You can connect the Battery-Emulator to a 12V source (AGM Battery, UPS, AC-DC source, etc.) and read the cell voltages and statistics before purchasing a battery. To do this, you will need Pin 1 3 4 5 6 7 12 (see the wiring diagram further down)

Example: Zoe battery being tested with a Stark CMR and lead-acid battery before purchase

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Software configuration~

For this battery type, select "Renault Zoe Gen1 22/40kWh" under the "Battery Protocol" setting.

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You can also enable "Contactor Control via GPIO" to automate contactor opening and closing.

Safety fuse/switch~

Note the battery fuse. Do not confuse it with the version from the 52kWh battery; using the wrong one could blow fuses or worse. Use the OEM fuse, part no: - 297C13111R for 22kWh. - 297C12645R for 40kWh.

Both 297C13111R and 297C12645R are interchangeable for 22/40 kWh batteries.

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Renault ZOE Gen 1 fuse has to have continuity between the two external sides (positive line): image image

Two other fuses are also inside the pack. One fuse is under the contactor cover, and another is at the join of the two halves of the pack at the opposite end from the connectors. If the middle fuse blows, this shows as a cell imbalance, with cell 48 around 0V. Replacing the fuse restores operation.

Part numbers for Renault Zoe 23/41kWh batteries~

Product Purchase Link
Battery communication connector, Yazaki 7282-8854-30 AliExpress OR Aliexpress wired - You need the Female plug
High voltage connector 80kW 297A6-5SH1A OR 297A22581R Ebay
Safety switch/fuse OEM Part no: 297C13111R for 22kWh and 297C12645R for 40kWh
Relays AliExpress DIN - get the "DC control DC CN" version (schematic to be added to this page)

Wiring diagrams~

IMPORTANT

This battery has no negative contactor. You only control the precharge and positive contactor.

Example of contactor control via SSR relays, connected to a LilyGo T-CAN485 board:

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Example of contactor control via SSR relays, connected to a Stark CMR board:

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Alternate version with one power supply and 2 SSR DD NO relays using StarkCMR v2 (this version does not have BMS reset relay/function): Image

Notes on balancing 🅱~

The Zoe Gen1 batteries appear to start top-balancing at around 93% SOC. Because of this, we recommend fully charging the battery from time to time to give it enough time to balance the cells.

You can observe cell-mV-delta at high SOC to confirm when balancing is active; unfortunately, the Zoe Gen1 battery does not send which specific cells are being balanced, so there is no visualisation in the Cellmonitor page.

Troubleshooting~

  • If the inverter does not want to use the battery with more than a few watts of power, check your precharge wiring. You might be pulling all the power through the precharge resistor instead of the contactor. A classic mistake is swapping them!
  • If the cell number 48 is low, your internal battery fuse most likely has blown. Then you need to open up the battery and replace the fuse.

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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.