Meet Firmware V8:Smarter Control. Stronger Protection. A Better Sol-Max Experience.

Smarter Backup Power with UPS Mode

UPS Mode is designed to keep batteries ready for backup while still putting solar to work. Solar serves the home first, the battery stays charged for outages, and the grid steps in as backup when PV is not available.

When PV is available

1. Step 1

   PV available

2. Step 2

   Power loads first

3. Step 3

   Charge battery

4. Step 4

   Export excess

   Where permitted

When PV Is Not Available

The grid powers the loads. If battery SOC drops below the configured Discharge End SOC on Grid setting, the system automatically recharges the battery to 100% at 12:00 AM.

Monthly Cycle

A scheduled monthly discharge cycle helps verify battery readiness while preventing unnecessary cycling.

Peak-Rate Timer

A timer can temporarily switch from UPS Mode to Self-Consumption during configured peak-rate periods.

Faster Commissioning with Quick Settings

Programming an inverter should not depend on remembering every setting. V8 adds a Quick Settings page that works hand in hand with the configurator tool, turning recommended settings into a simpler, more consistent commissioning workflow.

From configurator to commissioned

1. Step 1

   Select application

   Configurator tool

2. Step 2

   Choose battery type

   Configurator tool

3. Step 3

   Generate settings

   Recommended values

4. Step 4

   Apply in Quick Settings

   On the inverter

Faster setup. Fewer missed settings. Cleaner commissioning workflow.

• A dedicated Quick Settings page in the inverter interface
• Designed to work with the Sol-Max configurator tool
• The configurator generates the required settings
• Installers apply them directly from Quick Settings
• Helps prevent missed or incorrect programming steps

More Visibility. Better Diagnostics. Smarter Protection.

V8 brings more battery information directly into the inverter interface and adds protective behaviors for both lithium and lead-acid systems. Basic battery checks can now be made at the inverter, without reaching for separate tools.

Expanded BMS Data

Adds critical BMS parameters to the display, improving visibility into battery status, protection conditions, and system diagnostics.

SOC Drift Recovery

For Pylon and Sol-Max / MidNite / MNP batteries, generator-start logic during recovery charging helps prevent shutdown caused by SOC drift and recalibrates SOC by charging to 100%.

Lithium Protection

For lithium batteries, adds protection for battery absence or a DC-side short circuit. When triggered, the inverter transfers to bypass mode.

Lead-Acid Charging Visibility

Adds a charging-stage display and temperature-based charge-current limiting to improve charging behavior as temperatures change.

Lead-acid charging stages now displayed

BulkAbsorptionFloatEqualization

Generator Control That Adapts to Real-World Needs

Generator start and stop scheduling now lives directly under Time-Based Control. Installers can set the start time, stop time, charging power, and stop-charge SOC or voltage, while improved recovery charging and cool-down shutdown logic make each run more controlled.

Time-Based Control · Example day

Illustrative only — times are configurable

Quiet hours

Scheduled charge window

12 AM6 AM12 PM6 PM12 AM

A more controlled generator run

1. 1Start
2. 2Charge
3. 3Taper
4. 4Cool-down
5. 5Stop

Quiet Time

Schedule generator use around quiet hours or local restrictions.

Charge Target

Set charging power and a stop-charge SOC or voltage for each scheduled window.

Recovery Logic

Generator-start logic during recovery charging helps prevent inverter shutdown from SOC drift, with optimized cool-down shutdown.

Grid, Smart Load, and System Flexibility

V8 adds practical options for grid-interactive installations, from a Hawaii grid-standard selection and CT detection to a more flexible way of running smart loads when the grid is available.

• Hawaii Grid Standard

  A selectable Hawaii grid-standard option for projects that require Hawaii-specific grid-code settings.

• CT Detection

  Helps identify CT wiring or setup issues during commissioning.

• Smart Load: Always On with Grid

  A new Enable button keeps the smart load available while grid power is present.

• More Application Flexibility

  Broader configuration options for grid-connected and hybrid systems.

Grid present · Always On enabled

Smart Load ignores the battery SOC start/stop settings and remains available.

Grid not present, or Always On disabled

Smart Load follows the configured battery SOC start/stop settings.

Selecting a grid standard does not by itself make an installation compliant. Local codes, utility interconnection requirements, and required approvals still apply.

Better Performance for Complex Systems

Some of the most important V8 changes are ones you will not see on a settings page. Control logic has been restructured so that larger and more complex systems behave more consistently.

The Big Picture

Why Firmware V8 Matters

Executive Summary

Key Firmware V8 Highlights

Firmware V8 strengthens system control, simplifies commissioning, and improves service visibility across the Sol-Max inverter platform.

1. 01

   UPS Mode

2. 02

   Quick Settings + Configurator

3. 03

   Expanded BMS information

4. 04

   Generator recovery charging

5. 05

   Smart Load flexibility

6. 06

   Hawaii grid support

7. 07

   Time-based generator control

8. 08

   Parallel and AC-coupled improvements