Voltronic Power Axpert MAX II TWIN 12K Off-Grid Solar Inverter

Voltronic Axpert MAX II TWIN 12K Off-Grid Solar Inverter

The Axpert MAX II TWIN 12K is an off-grid solar inverter rated Axpert MAX II TWIN 12K.

  • Parallel Capability: YES, 6 units
  • Selectable Voltage Range: 170-280 VAC (For Personal Computers)
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Full SpecificationsDownload datasheet (PDF)

About the Voltronic Axpert MAX II TWIN 12K Off-Grid Solar Inverter

The Axpert MAX II TWIN 12K is an off-grid solar inverter rated Axpert MAX II TWIN 12K. Every figure on this page is read from the manufacturer's manual for the Axpert MAX II TWIN series.

Specifications last updated 18 August 2026

Voltronic Axpert MAX II TWIN 12K Off-Grid Solar Inverter full specifications

Electrical

Parallel CapabilityYES, 6 units
Selectable Voltage Range170-280 VAC (For Personal Computers)
AC Voltage Regulation (Batt. Mode)230VAC ± 5%
Efficiency (Peak)93%
Communication InterfaceUSB/RS232/RS485/WiFi/Dry-contact
Compliance SafetyIEC 62109, IEC 61683, EN/IEC 61000-6-2, 61000-6-4, 61000-3-11, 61000-3-12
Rated Power12000VA/12000W
Surge Power24000VA
Maximum PV Array Power18000W (Max. 12000W per tracker)
Maxmum Solar Charge Current200A
Maximum AC Charge Current200A
Maximum Charge Current200A
High Loss Frequency65±1Hz
High Loss Return Frequency63±1Hz
High Loss Return Voltage270Vac±7V
High Loss Voltage280Vac±7V
Low Loss Frequency40±1Hz
Low Loss Return Frequency42±1Hz
Low Loss Return Voltage180Vac±7V (UPS); 100Vac±7V (Appliances)
Low Loss Voltage170Vac±7V (UPS) 90Vac±7V (Appliances)
Max AC Input Voltage300Vac
Max. PV Array Open Circuit Voltage500Vdc
Nominal Input Frequency50Hz/60Hz (Auto detection)
Output Short Circuit ProtectionLine mode: Circuit Breaker (70A) Battery mode: Electronic Circuits
PV Array MPPT Voltage Range90Vdc 450Vdc
Start-up Voltage80V +/- 5Vdc
Low DC Cut-off Voltage44Vdc
Nominal DC Input Voltage48Vdc
Charging Current150A UPS
Cold Start Voltage46.0Vdc
Floating Charging Voltage54Vdc
Input Voltage WaveformSinusoidal (utility or generator) Nominal
OutputCharge Time to
Overload ProtectionSurge
Safety CertificationCE
WaveformPure sine wave
Solar Charger TypeMPPT
Parallel KitYES
Parallel communicationCAN
Output PowerFor 8KW model, when

Environmental

Humidity5% to 95%
Operating Temperature-10°C to 50°C
Storage Temperature-15°C to 60°C

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