Home › Integrations › VW MEB + SOFAR
Reusing a Volkswagen MEB platform battery (ID.3, ID.4, ID.5, Skoda Enyaq, Audi Q4 e-tron, Cupra Born) with a SOFAR HYD 5–20KTL-3PH three-phase hybrid inverter. Covers both NMC and LFP MEB variants.
Short answer. A VW MEB pack (48/62/77/82 kWh, 310–460 V DC depending on module count and SoC) fits inside the SOFAR HYD 5–20KTL-3PH battery input window of 180–800 V. The BMS-EV controller emulates a BYD Battery-Box Premium HVS stack on the SOFAR BMS-CAN port. It auto-detects the underlying chemistry (NMC in 82 kWh Pro / GTX, LFP in 55 kWh Pure variants) and reports appropriate charge/discharge limits.
| Inverter | Battery DC range | Power | Phase | Notes |
|---|---|---|---|---|
| SOFAR HYD 5KTL-3PH | 180–800 V | 5 kW | Three-phase | MEB 310–460 V fits, but check 350 V lower limit |
| SOFAR HYD 6KTL-3PH | 180–800 V | 6 kW | Three-phase | MEB fits |
| SOFAR HYD 8KTL-3PH | 180–800 V | 8 kW | Three-phase | MEB fits |
| SOFAR HYD 10KTL-3PH | 180–800 V | 10 kW | Three-phase | MEB fits |
| SOFAR HYD 15KTL-3PH | 180–800 V | 15 kW | Three-phase | MEB fits |
| SOFAR HYD 20KTL-3PH | 180–800 V | 20 kW | Three-phase | MEB fits |
VW MEB pack voltages across SoC (typical 96s NMC configuration for 77/82 kWh):
| SoC | Voltage NMC (approx.) | Voltage LFP (approx.) |
|---|---|---|
| 0% (cutoff) | ~310 V | ~290 V |
| 20% | ~350 V | ~320 V |
| 50% (nominal) | ~390 V | ~330 V |
| 100% | ~460 V | ~365 V |
NMC MEB packs fit fully inside the SOFAR 180–800 V window from ~20% SoC upward. Below 20% SoC on NMC and across most of the LFP range, the pack sits below the SOFAR minimum of 350 V. In practice VW BMS limits discharge before this happens; commissioning starts with a charge cycle to bring the pack above 350 V before enabling discharge.
The 82 kWh NMC "Pro" pack has the fullest useful voltage overlap with SOFAR. The 55 kWh LFP "Pure" pack is a poor match for SOFAR HYD-3PH and is better paired with a lower-voltage inverter.
SOFAR HYD-3PH accepts BYD Battery-Box HVS/HVM protocol on the BMS-CAN port at 500 kbps. The BMS-EV controller:
SOFAR menu: battery type BYD HVS or BYD Premium HV depending on firmware.
Engineering values below are examples. Final conductor cross-section and protective-device sizing must be calculated for the actual pack, maximum current, cable length, installation method, ambient temperature and applicable local standards (IEC 60364-7-712, VDE-AR-N 4105, NEC 690).
The 77 or 82 kWh NMC pack (ID.4 Pro, Enyaq 80, Q4 50) gives the fullest overlap with SOFAR's 180–800 V window and the most usable energy.
Technically possible, but the LFP voltage curve mostly sits below SOFAR's 350 V minimum. GoodWe ET (180–600 V) or SolaX X3 Hybrid HV (90–800 V) are better matches for LFP MEB.
Battery type: BYD HVS. Some firmware calls it "BYD Premium HV". The BMS-EV controller is factory-configured to match — check your invoice.
Yes on SOFAR HYD-3PH. Backup output continues to draw from the MEB pack during grid outages, sized to the discharge limit VW BMS reports.
The MEB BMS reports pack chemistry ID on the vehicle CAN bus. BMS-EV reads this at wake-up and configures voltage/current limits appropriately — nothing to set manually.
Only recommended before purchase to verify pack SoH and no active DTCs. Not needed for operation.
PPE is a different platform and voltage class (800 V). Not covered on this MEB page. SOFAR HYD-3PH accepts up to 800 V DC so PPE integration is theoretically possible but currently limited by MEB-specific firmware.
Estimates 8–15 years at low daily cycling depth (20–80%). MEB NMC cells (CATL, LG, SDI depending on year) are current-generation and durable.