SunGold Power 12KW 48V Split Phase Inverter

The SunGold Power 12KW 48V Split Phase Inverter Delivers 12000 Watts of 120V and 240V Pure Sine Power With a 36KW Surge for Whole-Home Backup

The SunGold Power 12KW 48V Split Phase Inverter is an LF-PV Series low-frequency inverter charger. It combines a 12.0KW pure sine wave inverter, a 115A AC battery charger and an automatic transfer switch in one wall-mounted unit, running from a 48V battery bank and supplying 120V and 240V split phase power from a 240V grid or generator input.

It is built for large home and business loads, including refrigerators, freezers, microwaves, dryers, air conditioners and pumps. The unit has no built-in MPPT solar charger, so it suits backup systems on grid or generator power and off-grid systems that already use a separate solar charge controller.

SunGold Power 12KW 48V Split Phase Inverter Features

12KW Continuous and 36KW Surge

The inverter supplies 12.0KW of continuous output and handles a 36.0KW surge for 20 seconds, 300% of its rating. That reserve helps with the start-up current of well pumps, air conditioners and other motor loads.

115A Charger With Power Factor Correction

The AC battery charger is rated 115±5Amp and is selectable from 0% to 100%. It uses 4-step intelligent charging with PFC, and its battery type selector offers 8 preset types, including lithium LiFePO4, gel, AGM and lead acid, plus a de-sulphation cycle.

Utility, Battery and Generator Modes

AC priority is the default, with utility or generator power running the loads while the charger refills the bank. Battery priority, set with SW5, makes the inverter the preferred source, with a typical 6ms transfer to utility power if the inverter output is interrupted. A generator setting on SW2 accepts a wide input voltage and frequency so dirty generator power does not cause frequent switching.

8ms Transfer and a 15-Second Generator Delay

Transfers between utility and battery take about 8 ms, with a 10ms maximum. When AC comes back, a 15-second delay protects your loads while a generator spins up to a stable voltage.

Automatic Generator Start

When the battery reaches its low voltage alarm, the inverter can signal a compatible generator to start, then turn it off once charging finishes. The relay carries up to 16A.

Smart Remote and Battery Temperature Sensor

The included remote control duplicates the front switch panel and connects by standard telephone cable up to 10 meters long. The BTS adjusts charging to battery temperature and switches the charger off when the battery reaches 50°C.

Power Saver Mode

Idle draw is 180W with power saver off and 40W with power saver on. In power saver mode, the inverter wakes up for any load above 25W.

Real-World Applications

Whole-home backup. Feed a 240V panel through outages, with automatic transfer and a generator that starts on its own when the bank runs low.

Off-grid homes. Pair the inverter with an external solar charge controller and a 48V bank, and use battery priority with utility or generator backup.

Businesses and shops. Run large 240V equipment and 120V circuits from one inverter during grid failures.

Pumps and HVAC. Start motor loads that need a large surge, such as pumps and air conditioners.

How It Compares to Common Alternatives

Versus the 6000W 48V split phase model. The 6000W LFP unit has an 18000W surge and a 60A charger and weighs 76.7 lb, and SunGold notes it meets the UL1741 standard. This 12KW model doubles the output and nearly doubles the charge current, at 160 lb.

Versus the 15KW and 18KW models. SunGold's manual rates them at 15.0KW and 18.0KW continuous with 45.0KW and 54.0KW surges, and bypass breakers of 80A and 100A against 60A here. Their power saver off idle draw rises to 225W and 270W.

Versus an all-in-one solar inverter. This model has no MPPT, so solar charging needs a separate controller. In return, you can choose the charge controller and array independently of the inverter.

Is This Split Phase Inverter the Right Fit

• Battery bank. Requires a 48V bank. The inverter only turns on when connected to one.
• AC input. 240V only, not suitable for 120V input. Input wiring is two hot lines plus ground.
• 120V loads. Total 120V load cannot exceed 50% of the rated power, which is 6000W on this model.
• Phase. Dual phase 120V and 240V output only. It cannot work with a multiple phase system.
• Installation. Indoor use only, 160 lb, 27.6 x 16.5 x 8 inches. It is not reverse polarity protected, so check battery polarity before connecting.

This may be a good fit if

• You need 12KW of split phase output
• Your system runs on a 48V battery bank
• You already have a solar charge controller
• You back up a home with a generator

Common Questions

Can It Connect to a Home With a Multiple Phase System?

No. It has dual phase output only, 120V and 240V, and it cannot work with a multiple phase system.

Can It Run 120V and 240V Loads at the Same Time?

Yes. HOT1 will have two cables connected. The 120V load cannot exceed 50% of the inverter's rated power, so 120V output is limited to 6000W.

What Is the Power Consumption With No Load?

Idle consumption is 40W with power saver on and 180W with power saver off.

Is a Battery Necessary?

Yes. The inverter can only be turned on when it is connected to a 48V battery bank.

Does It Have a Built-In Solar Charge Controller?

No. This model comes without MPPT, so solar panels need an external charge controller.

What's Included

• 1 x 12000W 48V Split Phase Pure Sine Wave Power Inverter (LFPV12K48V240VSP)
• 1 x English Manual
• 1 x Remote Control
• 1 x BTS Cable

Large Split Phase Loads on 48V

The SunGold Power 12KW 48V Split Phase Inverter gives a 48V bank 12.0KW of 120V and 240V pure sine wave output, a 36.0KW surge and a 115A charger, with automatic transfer and generator start built in. At Outbound Power, we help customers size whole-home inverters, battery banks and generators. If you have questions, our team is happy to help.

SunGold Power LFPV12K48V240VSP Manual