E3/DC S10 X vs Zendure SolarFlow 4000 Mix AC+
Technical comparison · All-in-one
They do not do the same job: the E3/DC is a three-phase store installed into a house's electrical system, the Zendure a single-phase unit for an apartment. What decides it is the supply you have: three-phase up to 12,000 W or single-phase up to 3,680 W.
| Parameter | ||
|---|---|---|
| Awards | — | |
| In brief | ||
| Usable capacity | 17.4 kWh | — |
| Continuous output | 12000 W | 3680 W |
| Cell chemistry | LFP (lithium iron phosphate) | — |
| Cost per kWh | — | 200 €/kWh |
| List price | — | 1600 € |
| Weight | 155 kg | 80 kg |
| Dimensions (W×D×H) | 61 × 44 × 141 cm | — |
| How long it lasts | ||
| Battery life cycles | 3650 cicli | 3650 cicli |
| The limit that runs out first | anni di garanzia | anni di garanzia |
| Rated cycles | — | 10000 cicli |
| Capacity at end of cycle life | — | 70 % |
| Warranty | 10 anni | 10 anni |
| Guaranteed remaining capacity | 80 % | — |
| The numbers | ||
| Cost of stored energy | — | 0.061 €/kWh |
| Energy density | 112.3 Wh/kg | 100 Wh/kg |
| Power-to-capacity ratio | 0.69 C | 0.46 C |
| Identity | ||
| Use tier | F4 — House-sized (8–20 kWh) | F3 — Flat-sized (3–8 kWh) |
| Price | ||
| Price | — | 1999 € |
| Universal specs | ||
| Voltage | 230 V | — |
| Category specs | ||
| Expandable | Yes | — |
| Maximum expanded capacity | 20.6 kWh | — |
| Phases | Three-phase | Single-phase |
| Maximum charge power | 11 kW | 4 kW |
| Backup power | EPS (brief interruption) | UPS |
| Backup phases | Three-phase | — |
| Switchover time | — | 10 ms |
| Grid charging | Yes | Yes |
| Dynamic tariffs | Built in | Built in |
| Heat pump integration | Yes | — |
| Round-trip efficiency | — | 90 % |
| Ingress protection | IP20 | IP65 |
| Minimum temperature | 5 °C | -20 °C |
| Maximum temperature | 35 °C | 55 °C |
| Works without internet | Fully | With limitations |
| Local control | Modbus | — |
| Open protocols | Modbus TCP, CAN bus, EEBus | — |
| Declared standards | CE, UN 38.3, VDE-AR-N 4105, IEC 62619, VDE 2510-50 | — |
| Grid connection power | — | 3 kW |
JouleSpecs Awards
No awards in this tier.
Best value Flat-sized (3–8 kWh)
Best balance of technical score and price among the 3 sheets in the All-in-one category (flat-sized tier): list price €1999, technical score 79/100.
How we assign awards →The differences that matter
- Continuous output 12,000 W vs 3,680 W, grid charging 11 kW vs 4 kW → the Zendure fills more slowly and the heavier loads stay on the grid.
- Three-phase vs single-phase → on the E3/DC the load is spread over three phases; on the Zendure it all sits on one.
- Backup EPS vs UPS → on the E3/DC a blackout means a brief interruption; the Zendure is declared as continuous.
- IP20 and 5–35 °C vs IP65 and −20–55 °C → the E3/DC needs an enclosed, temperate room; the Zendure tolerates an unheated spot.
Figures are as declared by the manufacturer.
Which one to choose
Choose E3/DC S10 X if…
you have a three-phase house and want it to keep working when the internet is down: the E3/DC is declared fully operational offline. It goes indoors and weighs 155 kg against the Zendure's 80, so plan on giving it a room of its own.
Choose Zendure SolarFlow 4000 Mix AC+ if…
you live in an apartment on a single-phase supply and have no utility room: it weighs 80 kg against 155 and does not take over a room. You accept much lower power and, without internet, reduced operation: the E3/DC is declared to run fully.
Where to buy
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