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 wall-mounted unit. 3.6–8 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
- 3.6–8 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 / 8 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
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 (3.6–8 kW 1-ph / 5–12 kW 3-ph) from one product family.
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 (3.6–8 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.
Inverter figures are from the official Deye 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.
