E3/DC S10 X Compact vs Zendure SolarFlow 4000 Mix AC+
Technical comparison · All-in-one
These are storage systems for different homes: E3/DC S10 X Compact is three-phase and delivers 12000 W, Zendure SolarFlow 4000 Mix AC+ is single-phase and tops out at 3680 W. Which supply you have at home settles the choice before anything else.
| Parameter | ||
|---|---|---|
| Awards | — | |
| In brief | ||
| Usable capacity | 8.25 kWh | — |
| Continuous output | 12000 W | 3680 W |
| Cell chemistry | LFP (lithium iron phosphate) | — |
| Cost per kWh | — | 200 €/kWh |
| List price | — | 1600 € |
| Weight | 130 kg | 80 kg |
| Dimensions (W×D×H) | 59 × 50 × 120 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 | 63.5 Wh/kg | 100 Wh/kg |
| Power-to-capacity ratio | 1.45 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 | 11.2 kWh | — |
| Phases | Three-phase | Single-phase |
| Maximum charge power | 6 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
- Three-phase vs single-phase → the E3/DC backs up all three phases of the house, the Zendure a single line (values as declared by the manufacturer).
- 12000 W vs 3680 W continuous → the difference between running a three-phase home's big loads together and staying within one line's worth.
- Backup with a pause vs 10 ms switchover → equipment that cannot tolerate a gap in supply is better served by the Zendure.
- IP20 and 5–35 °C vs IP65 and −20–55 °C → the E3/DC wants an indoor room; the Zendure accepts a cold or exposed spot.
Which one to choose
Choose E3/DC S10 X Compact if…
you have a three-phase supply and a heat pump you want talking to the battery over Modbus TCP or EEBus, and you want backup on all three phases. The trade-off: 130 kg, IP20 and an operating range of 5 to 35 °C, so it needs a sheltered technical room. Switching to backup comes with a brief interruption.
Choose Zendure SolarFlow 4000 Mix AC+ if…
you have a single-phase supply and the battery has to sit somewhere cold or exposed: IP65, −20 to 55 °C, with a declared 10 ms switchover to backup. The trade-off is the ceiling: 3680 W continuous and 4 kW charging, and without internet it runs in a reduced mode.
Where to buy
Paid link: the price for you does not change.
As an Amazon Associate I earn from qualifying purchases.
The purchase links are the same as on the two product pages and don't influence the verdict. The product pages have the complete data.