What the product is and who it suits

SolaX X1 Mini G4 1.5kW is a single-phase residential on-grid string inverter designed for small PV systems where a compact housing, simple one-string layout and dependable day-to-day performance are all important. As part of the X1 Mini G4 family, it sits above the smallest outputs while still keeping the same compact chassis and installation logic.

This exact X1-MINI-1.5K-G4 variant suits small homes, garages, annexes, outbuildings and compact domestic rooftops where the PV system needs more headroom than the 0.7kW class but does not justify stepping into a much larger inverter. It is a good fit where the array is relatively simple, roof orientation is consistent and the buyer wants clean solar conversion rather than hybrid battery control.

Like the rest of the Mini G4 family, this is an on-grid string inverter rather than a hybrid storage inverter. That distinction matters because it keeps the product focused on solar generation, export control and installation simplicity rather than direct battery charging functions.

Key features and practical benefits

SolaX lists the X1-MINI-1.5K-G4 with 1500W rated output power, up to 3kWp recommended PV array power, 1 MPPT in a 1/1 layout and 16A maximum input current. The official product page also lists a 40 to 450V MPPT voltage range for this model. Those values make it a practical choice for small one-string arrays using modern high-power panels.

SolaX also highlights 200% PV oversizing and 16A input support across the X1 Mini G4 platform. On a small PV system, that matters because it gives more freedom to use powerful modules without immediately running into inverter input constraints. The platform also includes global MPP tracking with shade optimisation, which helps on installations where light conditions are not perfectly uniform across the day.

Further product-page features include 10-second data refresh on SolaXCloud, I-V curve diagnosis, built-in export control function, smart loads management and support for up to 5 inverters in parallel without external EMS. That gives the 1.5kW version more intelligence than many small inverters with otherwise similar output.

• 1500W rated output power
• Up to 3kWp recommended PV array power
• 1 MPPT with 1/1 string layout
• 40 to 450V MPPT voltage range
• 16A maximum input current per MPPT
• Built-in export control and smart loads management

Installation, protection and operating detail

SolaX lists IP66 ingress protection for the X1 Mini G4 family and includes Type II surge protection on the AC and DC side, ready-for-rapid-shutdown support and optional AFCI. Those are strong protective features for a compact residential string inverter and help keep the product suitable for both indoor and outdoor siting when installed correctly.

For this model, SolaX lists dimensions of 290 x 206 x 120mm and a net weight of 5.2kg. That compact size matters on small domestic installs because wall space is often limited and the inverter may need to fit into garages, service areas or other tight spaces. Cooling is natural, keeping the unit simple and maintenance-light.

The latest official datasheet lists 98.0% maximum efficiency across the series. Communications are listed as RS485, DRM and optional meter or CT support. In practical terms, that means the inverter is built to integrate into a more controlled residential solar system rather than acting as a basic standalone box.

Why this variant may be the right choice

The 1.5kW version is the right fit where a project needs more day-to-day output than the 0.7kW variant but still wants to stay in the small compact end of the X1 Mini G4 family. That makes it a good match for smaller family homes, modest rooftop arrays and customers who want a clean one-string design without unnecessary complexity.

It is also a good stepping point for buyers who value platform features as much as raw inverter size. Export control, SolaXCloud support, smart load management and parallel capability mean the model remains more flexible than many small-string alternatives even when the array itself is relatively simple.

FAQs

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