
Voltronic Axpert VM III-3000-24 Off-Grid Solar Inverter
- AC Voltage Regulation (Batt. Mode):230VAC ± 5%
- Efficiency (Peak):90%-93%

The Axpert VMIII Axpert VM III-1500-24 is an off-grid solar inverter rated Axpert VM III-1500-24.
In stock
The Axpert VMIII Axpert VM III-1500-24 is an off-grid solar inverter rated Axpert VM III-1500-24. Every figure on this page is read from the manufacturer's manual for the Axpert VMIII series.
Specifications last updated 18 August 2026
| AC Voltage Regulation (Batt. Mode) | 230VAC ± 5% |
|---|---|
| Efficiency (Peak) | 90%-93% |
| Maximum Charge Current | 60A |
| Communication Interface | USB/RS232/RS485/Bluetooth/Dry-contact |
| Rated Power | 1500VA/1500W |
| Selectable Voltage Range | 170-280 VAC (For Personal Computers) |
| Surge Power | 3000VA |
| Maximum PV Array Power | 2000W |
| Floating Charge Voltage | 27 VDC |
| Maximum PV Array Open Circuit Voltage | 400 VDC |
| MPP Range @ Operating Voltage | 120 ~ 380 VDC |
| Maximum AC Charge Current | 40A |
| Waveform | Pure sine wave |
| Transfer Time | 15 ms (For Personal Computers) 20 ms (For Home Appliances) |
| Solar Charger type | MPPT |
| Net Weight (kgs) | 8.5 |
|---|
| Humidity | 5% to 95% |
|---|---|
| Operating Temperature | -10°C to 50°C |
| Storage Temperature | -15°C to 60°C |








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Read: How to Monitor Voltronic Inverters and UPS via WiFi →The Axpert VM III-1500-24 is rated 1500VA/1500W continuous, with 3000VA available on surge for the second a motor or a compressor starts. Size the load you actually intend to run against the continuous figure, never against the surge one.
The Axpert VM III-1500-24 takes up to 2000W of PV array. The string has to stay below 400 VDC open-circuit — that ceiling is reached on a cold bright morning, not at noon. The tracker works over 120 ~ 380 VDC, so wire the modules to land inside that window.
Peak efficiency is 90%-93%. Whatever is not converted leaves as heat, so the Axpert VM III-1500-24 needs clear air around it and a mounting spot that is not the hottest wall in the building.