The Duracell Energy Dura-i G3 5.0 kW (model PD-DH1P-5.0K-G3) is a single-phase hybrid solar inverter engineered for UK homes that demand more from their energy system. Sitting at the top of the Dura-i G3 residential range before the transition to the 6 kW model, it delivers a rated AC output of 5,000 W, a peak backup capacity of 10,000 VA and a battery charge/discharge rate of 5,500 W (110 A) — making it well-matched to larger Dura5 battery stacks, high-draw appliances and homes with significant EV charging loads. The dual MPPT inputs accept up to 10 kWp of solar across a 70–540 V operating window, and the 10 ms emergency backup transfer keeps critical circuits running during grid outages. Like all G3 models it supports up to nine inverters in parallel, integrates with the Duracell Energy app and carries a 10-year manufacturer's warranty backed by Puredrive Energy in Gloucestershire.
5,500 W
Battery Charge Rate
10,000 VA
Peak Backup Output
⚠ G99 Application Required — Qualified Installer Only
At 5.0 kW, this model exceeds the
3.68 kW G98 notification threshold. A
formal G99 application to your DNO must be submitted and approved before commissioning. Allow
4–8 weeks for approval (network-operator dependent). The Dura-i G3 must be installed by a
suitably qualified electrician in accordance with
BS 7671, MCS requirements (where applicable) and the manufacturer's installation manual. For support, contact Duracell Energy:
01386 577845 /
sales.uk@duracellenergy.com.
⚡ 5,500 W Battery Throughput
With a 110 A / 5,500 W charge and discharge rate, the G3 5.0 kW keeps pace with larger Dura5 battery banks and can fully absorb surplus solar generation before grid export. This symmetrical throughput also means the battery can dispatch at full 5,500 W to supplement the inverter's output during periods of high demand — supporting EV chargers, heat pumps and high-draw kitchen appliances simultaneously.
🔋 Dura5 LiFePO₄ Ecosystem
The Dura-i G3 is designed to pair with the Duracell Energy Dura5 battery (48 V nominal, 40–65 V range). The inverter self-adapts its charge curve to the Dura5's BMS communication over CAN, meaning cell-level data — state of charge, temperature, individual cell voltages — flows continuously from battery to inverter, enabling precise charge control and early fault detection without manual calibration.
☀️ Dual MPPT, 10 kWp Solar Ready
Two independent MPPT inputs (one string per channel) track up to 10 kWp of solar PV across a 70–540 V operating window. The wide low-voltage start at 90 V means generation starts earlier in the morning and continues later in the evening compared to inverters with a higher start threshold — materially increasing annual yield on typical UK roof orientations.
💡 10 ms Emergency Backup
The G3 5.0 kW transfers to off-grid backup mode in a typical 10 ms — fast enough to protect computers, NAS drives and refrigeration from noticeable power interruption. Peak backup output of 10,000 VA for 10 seconds handles the inrush current of large motor loads at start-up. Rated continuous backup is 5,000 W at 21.7 A, sufficient to sustain whole-home critical circuits.
🔄 Smart Fan Cooling
Unlike the 3.6 kW model which relies on passive convection, the G3 5.0 kW uses smart fan cooling that activates only under thermal load. During low-power operation — overnight battery charging or light morning solar — the unit runs silently. Under full 5,500 W battery throughput or prolonged backup events, the fan ramps proportionally, keeping junction temperatures within safe limits and acoustic output below 35 dB(A) at idle.
📊 App, Tariff Intelligence & 9-Unit Parallel
Full monitoring and control flows through the Duracell Energy app (iOS & Android) via RS485, CAN, USB and optional Ethernet/Wi-Fi connectivity. The built-in Tariff Intelligence engine integrates with virtually every UK dynamic tariff, auto-scheduling cheap-rate grid charging. Where capacity demands exceed a single unit, up to 9 inverters can be connected in parallel for a combined AC output of 45 kW.
ℹ G99 vs G98 — Which Applies to This Model?
The 3.6 kW G3 model falls below the 3.68 kW G98 threshold, requiring only a simple DNO notification. The 5.0 kW, 4.6 kW and 6.0 kW models all exceed this threshold and therefore require a full G99 application with DNO approval before commissioning. This is a regulatory requirement under Engineering Recommendation G99 — not a Duracell Energy or AIZO policy. Your MCS-certified installer will handle the G99 submission; please factor in DNO approval time when planning your installation date.
| Parameter |
Dura-i G3 5.0 kW — PD-DH1P-5K-G3 |
| PV Input |
| Max. PV power (W) |
10,000 W |
| Max. PV input voltage (V) |
550 V |
| Start operating voltage (V) |
90 V |
| MPPT voltage range at full load (V) |
70–540 V |
| No. of MPPT / strings per MPPT |
2 / 1 per MPPT |
| Max. input current per MPPT (A) |
18 A / 18 A |
| Max. short-circuit current per MPPT (A) |
25 A / 25 A |
| Battery Input / Output |
| Compatible battery type |
Lithium-ion (Dura5, LiFePO₄) |
| Nominal battery voltage (V) |
48 V |
| Battery voltage range (V) |
40–65 V |
| Max. charge / discharge current (A) |
110 A / 110 A |
| Max. charge / discharge power (W) |
5,500 W / 5,500 W |
| AC Output (Grid) |
| Nominal AC output power (W) |
5,000 W |
| Max. AC output apparent power (VA) |
5,500 VA |
| Max. AC output current (A) |
25 A |
| Rated AC voltage (V) |
230 V |
| AC voltage range (V) |
215–253 V |
| Rated grid frequency (Hz) |
50 Hz |
| Grid connection |
Single phase |
| Power factor (rated) |
0.99 (adjustable 0.8 LG – 0.8 LD) |
| THDi |
<3% |
| Backup Output |
| Nominal backup output power (W) |
5,000 W |
| Rated backup output current (A) |
21.7 A |
| Peak backup output (>10 s) |
10,000 VA |
| Transfer time |
10 ms (typical) |
| THDv (100% R load) |
<3% |
| Efficiency |
| Max. efficiency (PV to AC) |
97.3% |
| European efficiency (PV to AC) |
96.8% |
| Max. efficiency (battery to AC) |
94.3% |
| General |
| Ingress protection |
IP65 |
| Dimensions (W × H × D) |
377 × 452 × 206 mm |
| Weight |
20 kg |
| Cooling method |
Smart fan cooling |
| Noise emission |
<35 dB(A) |
| Operating temperature (°C) |
−25 °C to +60 °C |
| Max. operating altitude (m) |
4,000 m |
| Communication interfaces |
RS485, CAN (BMS), USB, Ethernet, DRM; optional Wi-Fi/LAN |
| Monitoring |
Duracell Energy app (iOS / Android) |
| Display |
LED + App |
| DC connection type |
MC4 / H4 |
| Topology |
Transformerless |
| Mounting |
Wall bracket (included) |
| Grid certifications |
G98, G99, IEC 61727 / 62116, VDE4105, EN50549, AS4777.2 |
| Warranty |
10 years (Puredrive Energy Ltd, UK) |
ℹ About the G3 Range & Parallel Operation
The Dura-i G3 is available in 3.6 kW, 4.6 kW, 5.0 kW and 6.0 kW single-phase variants. All four share the same 377 × 452 × 206 mm footprint and 20 kg weight, making it simple to upgrade later by swapping in a higher-rated unit. Up to 9 inverters can be paralleled for a combined 45 kW single-phase output. All G3 units are manufactured under licence and warranty supported by Puredrive Energy Limited, Toddington GL54 5EB. Duracell is a registered trademark used under licence; Duracell Batteries BV is not involved in the design or manufacture of this product.
How does the 5.0 kW G3 differ from the 4.6 kW and 6.0 kW models?
All four G3 single-phase models share the same physical enclosure (377 × 452 × 206 mm, 20 kg), dual MPPT inputs, 10 kWp solar capacity, 97.3% peak efficiency and 10 ms backup transfer. The key differences are in AC output and battery throughput. The 3.6 kW delivers 4,000 W battery charge/discharge, uses passive cooling and falls under the simpler G98 notification process. The 4.6 kW and 5.0 kW both provide 5,500 W battery throughput (110 A). The 6.0 kW tops the range with 6,600 W battery throughput (135 A) and 6,000 W nominal AC output. The 5.0 kW is the natural choice when 4.6 kW AC feels limiting but a full G99 application is already needed.
Can I add a Dura-i G3 5.0 kW to an existing solar system?
Yes. The Dura-i G3 connects as an AC-coupled hybrid, which means it can sit alongside an existing solar string or microinverter installation. DC PV strings can also be connected directly to the Dura-i G3's MPPT inputs if the existing system is being restructured. The integrated energy meter monitors grid import and export in real time, so the inverter can prioritise battery charging from surplus generation without exporting unnecessarily. Your installer will advise on the best integration method for your existing equipment.
What battery should I pair with the Dura-i G3 5.0 kW?
The Dura-i G3 is designed for the Duracell Energy Dura5 battery (48 V nominal, LiFePO₄). Batteries connect to the inverter's dedicated DC connector, and the inverter communicates with each module's BMS over CAN to self-adapt its charging curve. The Dura5 is available in 5.12 kWh modules that can be stacked in parallel to match your storage requirements. The inverter supports a battery voltage range of 40–65 V, which accommodates both partially-discharged and fully-charged Dura5 stacks. Compatibility with third-party 48 V lithium batteries is not guaranteed by Duracell Energy.
Does the Dura-i G3 5.0 kW qualify for MCS certification?
MCS certification of the installation (not the product itself) is required to access the UK Smart Export Guarantee (SEG) and many home energy grants. Whether MCS certification applies depends on whether your project includes solar PV (MCS 012 standard) or battery storage only (MCS 020 standard). The Dura-i G3 is installed by Duracell Energy-approved installers who can confirm MCS eligibility for your specific project. Contact us or visit the Duracell Energy approved installer directory for guidance.
How does Tariff Intelligence work with this inverter?
The Duracell Energy app's Tariff Intelligence connects to your electricity supplier's API and automatically schedules grid charging during cheap-rate periods (such as Octopus Flux, Agile or Go overnight windows) and prioritises battery discharge during peak-rate periods. No manual scheduling is needed — the AI re-optimises the schedule each evening based on the next day's forecast tariff rates, weather data (for solar yield prediction) and your household consumption profile. The Dura-i G3 5.0 kW retrieves and implements these schedules automatically via its cloud connection.
