All in One Fox ESS PQ1 8.0kW Hybrid Off-Grid Inverter & 9.84-29.52 EQ5000-S Battery
A high-output single-phase solar battery system for larger homes, workshops and light-commercial premises, combining an 8.0kW Fox ESS PQ1 hybrid off-grid inverter with scalable EQ5000-S LFP battery storage.
- 8.0kW rated AC output, 8.8kVA maximum apparent power and 8kVA EPS backup capability.
- Four independent MPPTs, 20A per MPPT and up to 24kW connected PV array power for flexible solar-array design.
- EQ5000-S battery storage from 9.84kWh to 29.52kWh nominal capacity, using two to six 4.92kWh modules.
Fox ESS PQ1 8.0kW Hybrid Off-grid Inverter with EQ5000-S Battery Storage
The Fox ESS All-in-One PQ1 8.0kW Hybrid Off-Grid Inverter & EQ5000-S Battery Storage System is a floor-mounted, stackable energy-storage platform for single-phase solar installations. It brings together PV conversion, high-voltage LFP storage, grid interaction and supported essential-load backup within one modular system.
The PQ1-8.0 inverter offers 8.0kW rated output and four MPPT trackers for sites with multiple roof orientations or differently configured solar strings. A complete system requires two to six compatible EQ5000-S battery modules, providing 9.84kWh to 29.52kWh of nominal battery storage.
Key features
- 8.0kW hybrid output: suitable for higher-demand single-phase solar and battery-storage applications, subject to site design and supply capacity.
- Four independent MPPTs: 20A maximum input current per tracker supports flexible PV-string design.
- Scalable LFP storage: use two to six EQ5000-S modules for 9.84kWh to 29.52kWh nominal capacity.
- Backup-ready design: 8kVA EPS output, 63A maximum bypass current and a stated transfer time of less than 4ms.
- Outdoor-capable construction: IP66 inverter protection rating; install to Fox ESS instructions and provide suitable mounting, cable routing and environmental clearances.
Where to use
This Fox ESS PQ1 8.0kW hybrid inverter and EQ5000-S battery system is suited to larger homes, home offices, small commercial buildings, farm offices, workshops and rural properties with a suitable single-phase supply. It can help increase solar self-consumption and provide battery power when solar generation is low.
The four MPPTs are useful where PV modules are split across several roof aspects, buildings or string lengths. With correctly designed backup circuits, the system can support selected essential loads during a grid outage; the final load schedule must remain within the EPS rating and the site’s installation design.
This system requires professional installation, commissioning and, where grid-connected, appropriate DNO approval and electrical compliance. We recommend using a trusted installation partner for system design, PV-string sizing, protective devices, battery configuration and backup-circuit arrangements.
Technical specifications
| Inverter model | Fox ESS PQ1-8.0 |
| System type | Single-phase stackable all-in-one hybrid energy-storage system |
| Compatible battery | Fox ESS EQ5000-S battery module |
| Battery chemistry | Lithium iron phosphate (LiFePO₄) |
| Battery module nominal capacity | 4.92kWh |
| Battery module quantity | 2–6 modules |
| Nominal storage capacity | 9.84–29.52kWh |
| Battery depth of discharge | 90% |
| Maximum PV array power | 24,000W |
| Maximum PV input power | 20,000W |
| Maximum input voltage | 600V |
| Minimum input voltage | 75V |
| PV start-up voltage | 80V |
| Nominal PV input voltage | 360V |
| MPPT voltage range | 80–550V |
| MPPT voltage range at full load | 105–550V |
| Independent MPPT trackers | 4 |
| Strings per MPPT | 1 + 1 + 1 + 1 |
| Maximum PV input current | 20A / 20A / 20A / 20A |
| Maximum PV short-circuit current | 25A / 25A / 25A / 25A |
| Maximum battery charge power | 12,000W |
| Maximum battery discharge power | 8,000W |
| Rated AC output power | 8,000W |
| Rated AC apparent power | 8,000VA |
| Maximum AC apparent power | 8,800VA |
| Rated grid voltage | 220V / 230V / 240V, single phase, L / N / PE |
| Rated grid frequency | 50Hz / 60Hz |
| Rated output current | 36.4A |
| Maximum output current | 40.0A |
| Maximum AC input apparent power | 14,500VA |
| Maximum AC input current | 63.0A |
| EPS maximum apparent power | 8,000VA |
| Maximum EPS bypass current | 63A |
| EPS transfer time | Less than 4ms |
| Parallel operation | Up to 3 units, subject to current Fox ESS guidance and system design |
| Installation | Floor-mounted upper module of a PowerQ stack |
| Dimensions | 570 × 420 × 380mm |
| Net weight | Approximately 35kg |
| Ingress protection | IP66 |
| Operating temperature | -25°C to 60°C; derating from 45°C |
| Relative humidity | 0–95%, non-condensing |
| Maximum operating altitude | Below 4,000m; derating above 2,000m |
| Cooling | Fan cooling |
| Noise level | Less than 50dB |
| Standby consumption | Less than 15W when PV and grid are available |
Documents available for download
Shipping
Available for delivery to the UK, Ireland, Africa, the Caribbean and worldwide. If the shipping rate is not shown at checkout, please contact us on +44 2080 640335 or info@energian.co.uk for a quote.
UK expert support
UK expert support is available. Contact Energian with questions or support requests by telephone, email or live chat, or visit our office for an in-person consultation. We can help with PV-string design, expected load assessment, battery sizing, backup-circuit planning and identifying an appropriate installation partner.