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Renault Zoe Battery for Home Energy Storage

Renault Zoe was the highest-volume small EV in Europe from 2013 to 2023 and its packs are now widely available on the used market. Three distinct generations — 22 kWh, 41 kWh and 52 kWh — each with different chemistry and CAN behaviour.

Battery generations

Generation	Capacity	Years	Chemistry	Cell manufacturer	Cooling	Nominal V
Zoe Gen1 Q210/R240	22 kWh	2013–2016	NMC pouch	LG Chem	Air (passive)	~360 V
Zoe Gen1 R90/Q90 ZE40	41 kWh	2017–2019	NMC pouch	LG Chem	Air (passive)	~400 V
Zoe Gen2 R135 ZE50	52 kWh	2019–2023	LFP prismatic	CATL	Liquid	~400 V

Pack topology and cell configuration

• Gen1 22 kWh: 192 cells in series (192s1p), 12 modules of 16 cells. Operating range roughly 300–410 V. Pack weight ~280 kg.
• Gen1 41 kWh: 96s2p (192 LGX E63 3.6 V / 65.6 Ah pouch cells, per pushevs.com teardown), LG Chem NMC chemistry. Nominal ~360 V, operating range 300–410 V. Pack weight ~305 kg.
• Gen2 52 kWh / ZE50: 96s2p (192 LG Chem LGX E78 3.65 V / 78 Ah pouch cells, NCM 712 chemistry, per pushevs.com teardown). Nominal ~360 V, operating range 300–410 V. Pack weight ~326 kg. Air-cooled with optional heater.

Original Renault BMS

Renault engineered the pack around an LG Chem-supplied master BMS on Gen1 packs; Gen2 uses a CATL/LG hybrid supervisory design. Cell balancing, isolation monitoring, overtemperature and overvoltage cutoffs all remain the responsibility of the factory BMS. The BMS-EV controller does not disable, replace or bypass any of these functions — it reads them and forwards the health data to the inverter.

CAN protocol notes

• Gen1 22 kWh vs 41 kWh: the CAN message layout differs subtly. Message IDs for SoC, current and cell voltages are the same family but scaling factors and byte order changed between the two generations. Firmware selection at ordering time must match the exact model year.
• Gen1 22 kWh modules: the pack's 12 LG Chem modules can also be operated independently at ~36 V nominal — this is a common approach for low-voltage installations but is out of scope for the standard BMS-EV controller.
• Gen2 52 kWh: uses a newer CAN-FD compatible payload structure. The BMS-EV firmware reads it on classic CAN by locking the frame rate to the legacy 500 kbps subset.
• Contactor sequencing (precharge → main +) is driven by the original Renault CMM (contactor management module). The BMS-EV controller wakes the CMM by injecting the correct wake-up frames.

Compatible hybrid inverters

Inverter	DC input range	Compatible with	Notes
Deye SUN HP3	160–800 V	Gen1 41, Gen2 52	Uses BYD-Box or Pylontech-HV emulation
SOFAR HYD 5–20 KTL-3PH	180–750 V	Gen1 41, Gen2 52	SOFAR-HV protocol
GoodWe EH / ET series	200–650 V	Gen1 41, Gen2 52	GoodWe-native HV
SolaX X3 Hybrid G4 HV	180–650 V	Gen1 41, Gen2 52	Triple MPPT
SolaX X1 Hybrid LV / Growatt SPH	40–60 V	Gen1 22 (modules only)	Requires module-level rewiring

Known limitations

• Gen1 22 kWh modules can be operated independently at ~36 V each — some installers prefer this over the full 360 V pack. It has a more conservative operating profile for DIY but doubles the wiring complexity.
• CAN differences between Gen1 22 kWh and Gen1 41 kWh — do not assume firmware is interchangeable, always verify the vehicle VIN.
• Gen2 52 kWh ZE50 NCM 712 has a steeper discharge curve than LFP; SoC estimation from voltage is reasonable but the original BMS coulomb-counting SoC remains authoritative.
• Zoe Q210 45 kW motor variant has a slightly different BMS firmware than the R240 22 kW motor — treat as edge case.
• Passive air cooling on Gen1 limits sustained charge/discharge current to about 0.3 C in warm ambient; not a problem for typical residential use but worth noting.

Installation examples

Typical residential deployments we see:

• Gen1 41 kWh + Deye SUN 12K-SG04LP3-EU (HV variant) on a 10 kWp PV system — €4 100 total including controller and cabling.
• Gen2 52 kWh + SOFAR HYD 10KTL-3PH backing up a 15 kWp installation with EV charging — €4 800 total.
• Gen1 22 kWh split into 12 modules feeding a 48 V Growatt SPH — DIY-friendly, lower voltage exposure, €2 400 total.

Order a Renault Zoe controller

Pre-configured firmware for your exact Zoe generation + inverter pair

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Frequently asked questions