AI-W5.1 All-in-One BESS · 3.6–12 kW + up to 50 kWh
AI-W5.1-B-ESS (Spring Series)
3.6–12 kW
Complete all-in-one energy storage system — a Deye hybrid inverter plus stackable AI-W5.1-B LFP batteries in one floor-standing stack. 3.6–10 kW single-phase or 5–12 kW three-phase, 5–50 kWh tool-free storage, 4 ms backup switchover. Suncloud's most popular residential BESS.
- System
- Hybrid inverter + battery (all-in-one)
- Inverter power
- 3.6–10 kW (1-phase) · 5–12 kW (3-phase)
- Battery
- AI-W5.1-B · 5.12 kWh modules → 5–50 kWh
- Backup switchover
- 4 ms
- Chemistry
- LiFePO4 (cobalt-free)
- Stacking
- Tool-free, no external combiner
- Grid standard
- AS/NZS 4777.2
- Warranty
- 10 years
✓ Specs verified against the official Deye datasheet.
Specifications
System
- Architecture
- 6-in-1: EMS, battery PCS, battery pack, solar inverter, gateway & DC bus built-in
- Inverter power (single-phase)
- 3.6 / 5 / 6 / 7 / 7.6 / 8 / 10 kW
- Inverter power (three-phase)
- 5 / 6 / 8 / 10 / 12 kW
- Scalable energy
- 5.12 kWh per module → up to 50 kWh per system
- Backup switchover
- 4 ms
- Inputs
- Solar + Generator + Grid + EPS + EMS
- Monitoring
- App · PC · on-unit touch display
Battery
- Battery module
- AI-W5.1-B — 5.12 kWh LFP (full specs on the battery page)
- Modules per system
- Up to 6 per cluster; scalable across clusters
Inverter (electrical)
- Battery voltage
- 40–60 V
- Max. PV input voltage
- 500 V (1-ph) · 800 V (3-ph)
- MPPT voltage range
- 150–425 V (1-ph) · 200–650 V (3-ph)
- MPP trackers
- 2
- Grid voltage
- 230/240 V (1-ph) · 230/400 · 240/415 V (3-ph)
- Peak power (off-grid)
- 2× rated, 10 s
General
- Communication
- WiFi / Web / GPRS / App
- Warranty
- 10 years
Downloads
- Datasheet — AI-W5.1-B-ESS Series (AU)Datasheet · 12.5 MB · PDFDownload
- User manual — AI-W5.1-B (PDU1)Manual · 6.3 MB · PDFDownload
- User manual — single-phase inverter (3.6–10 kW, all models)Manual · 49 MB · PDFDownload
- Quick guide — AI-W5.1-B (PDU3)Quick guide · 3.4 MB · PDFDownload
- 10-year warranty — All-in-One inverterWarranty · 253 KB · PDFDownload
Highlights
- All-in-one system — a Deye hybrid inverter and stackable AI-W5.1-B LFP batteries in a single wall-mounted unit. This page covers the system; full battery specs are on the AI-W5.1-B battery page.
- 6-in-one integrated design — hybrid inverter, battery PCS, battery pack, solar inverter, gateway and DC bus all built in. No external combiner box needed.
- Tool-free stacking — expand from 5 kWh to 50 kWh by adding 5.12 kWh modules; one-click setup.
- 4 ms seamless switchover to backup for genuine energy security during outages.
- Single- or three-phase inverter (3.6–10 kW 1-ph / 5–12 kW 3-ph) from one product family.
- 10 kW single-phase now available —
AI-W5.1-10P1-AU-B, the largest single-phase unit in the range.
Single-phase lineup (AU)
All single-phase models share one user manual and the same PDU, base and battery stacking. Figures below are from the AU model table in that manual.
| 3.6P1 | 5P1 | 6P1 | 7P1 | 7.6P1 | 8P1 | 10P1 | |
|---|---|---|---|---|---|---|---|
| Rated AC in/out power (W) | 3600 | 5000 | 6000 | 7000 | 7600 | 8000 | 10000 |
| Max. apparent power (VA) | 3960 | 5500 | 6600 | 7700 | 8360 | 8800 | 11000 |
| Rated AC current (A) | 16.4/15.7 | 22.7/21.7 | 27.3/26.1 | 31.9/30.5 | 34.5/33 | 36.4/34.8 | 45.5/43.5 |
| Max. battery charge/discharge (A) | 90 | 120 | 135 | 175 | 190 | 190 | 210 |
| Max. PV access power (W) | 7200 | 10000 | 12000 | 14000 | 15200 | 16000 | 20000 |
| Max. PV input power (W) | 5760 | 8000 | 9600 | 11200 | 12160 | 12800 | 16000 |
Full model codes take the form AI-W5.1-<rating>P1-AU-B. Common to every single-phase model: 40–60 V
battery (1 input), 500 V max PV input, 125–500 V PV input range, 150–425 V MPPT, 220/230 V L+N+PE,
97.6% max efficiency, IP65, floor-mounted.
AI-W5.1-10P1-AU-B — the 10 kW single-phase
- 10 kW / 11 kVA, rated AC current 45.5/43.5 A, max AC current 50/47.9 A
- 20 kW max PV access (16 kW max PV input) — 2 MPP trackers, 2+2 strings, 32+32 A max operating PV current
- 210 A max battery charge/discharge — the highest in the single-phase range
- 50 A max continuous AC passthrough (grid→load); max output fault current 100 A; OCP 140 A
- Full-load MPPT range 250–425 V; 48+48 A max input short-circuit current
- Peak power 2× rated for 10 s; 97.6% max efficiency (96.5% Euro, >99% MPPT)
Typical configuration
- Main system (with inverter): 1 × hybrid inverter + 1 × PDU3 + battery modules + 1 × Base
- Battery-only cluster (PDU1): 1 × PDU1 + battery modules + 1 × Base — a standalone battery cluster that adds storage without another inverter
The inverter comes in single-phase (3.6–10 kW) or three-phase (5–12 kW) variants — the PDU and battery stacking are the same either way. Up to 6 modules per cluster, with a built-in parallel interface to scale without an external combiner box.
Single-phase figures are from the AU model tables in the Deye AI-W5.1-B-ESS single-phase user manual; three-phase and system figures are from the AI-W5.1-B-ESS (AU) brochure; battery figures are on the AI-W5.1-B battery page. Confirm the exact single/three-phase model variant against the linked documents before quoting or commissioning.
