SGPWATT SUNGOLDPOWER 10000W 48V Solar Inverter, Built-in 2 MPPT Solar Controllers, Max 200A Battery Charging, AC Input/Output 120V/240V(settable),Pure Sine Wave Inverter(WiFi and BMS COMM) UL1741

I put the Sungoldpower 10kW inverter at the center of a small split‑phase backup system and asked it to do a bit of everything: run 240 V loads, keep a lithium bank happy, harvest from two PV strings facing different directions, and play nicely with the grid during time‑of‑use peaks. It’s a lot to ask of a single box. After living with it, I’m convinced it’s one of the more capable all‑in‑ones in its class—powerful and flexible—with a few practical quirks you’ll want to account for before installation.

Build, layout, and installation

This is a sizable unit, and it feels it. The chassis is stout, the mounting bracket is up to the task, and the internal busbars and heat sinks are arranged sensibly. Plan for two people to hang it safely and give it good side and bottom clearance for airflow.

Wiring is straightforward, but there’s one design decision worth calling out: the AC output terminals top out at 8 AWG. For a 10 kW split‑phase inverter that can easily feed a 50 A subpanel, I would have preferred lugs that accept 6 AWG or even 4 AWG. My workaround was to use properly crimped reducers/pigtails to step down to the terminal size, and to keep runs short to stay within voltage‑drop and ampacity limits. It’s not a showstopper—just plan your terminations and strain relief accordingly.

On the DC side, the battery lugs are robust, and the dual MPPT PV inputs are clearly labeled. With a 500 VDC open‑circuit limit, series strings are long enough to keep combiner complexity down; cold‑weather VOC calculations are still a must. Grounding and neutral bonding are managed appropriately inside the unit; as always, confirm your local code requirements and bonding strategy, especially for transfer scenarios.

Menus are dense, but logically grouped. I set split‑phase output, battery chemistry (lithium with BMS comms), charge limits, and the operating mode in a few minutes. The included Wi‑Fi dongle made it easier to confirm settings via the mobile app than clicking through the front panel.

Power and performance

On pure sine output quality, the Sungoldpower 10kW is excellent. Inductive loads like a 1.5 HP well pump and a small compressor started cleanly, and sensitive electronics didn’t hiccup. The 20 kW peak capability is real enough to handle motor inrush without dimming lights across the subpanel. At 240 V, it ran a 32 A EVSE (about 7.7 kW) while still supplying a couple of 120 V branch circuits without complaint.

Transfer behavior is quick. In UPS‑style operation with utility present, switching to inverter power was fast enough that the media center and network gear stayed online—no reboots, no blinking clocks. The same was true going the other direction. If you’ve used slower hybrids before, the difference is noticeable.

Thermals and acoustics are well controlled. Under light to moderate loads, the unit is quiet; the fans ramp audibly during heavy charge or discharge but remain unobtrusive in a garage or utility room. Efficiency is competitive for this class—no surprise given the short cable runs inherent to an all‑in‑one.

Solar and battery integration

The two independent MPPT trackers make array design flexible. I ran an east string on one and a west string on the other; both tracked well through the day and recovered quickly from passing clouds. MPPT windows are broad enough to tolerate real‑world voltage sag without dropping out.

Battery support is a strong point. You can choose from preset profiles for AGM/gel/flooded or lithium, or define custom voltages and limits. With lithium, CAN/RS485 communication let the inverter pull state‑of‑charge and adhere to BMS charge/discharge ceilings. The advertised max 200 A charging capability is generous; it allowed aggressive bulk charging from PV or grid when I needed to turn the bank around quickly. There’s also a true battery‑free mode if you’re using it primarily as a solar‑assist power conditioner, though you give up the obvious benefits of storage.

One small note: after an early round of experimentation with mode settings, I performed a factory reset to clear a parameter that wasn’t taking. After that, changes applied as expected. Treat configuration as a system—some behaviors depend on related menu items—and you’ll avoid chasing your tail.

Operating modes and time‑of‑use logic

You get four charging strategies (hybrid, utility priority, solar priority, solar‑only) and four output priorities (utility priority, hybrid, solar priority, inverter priority). In practice, this covers most real‑world use cases. I landed on solar‑priority for both charge and output during the day, and hybrid output at night to let the grid help if load spikes above a setpoint.

The time‑slot charging/discharging feature is a highlight. I set off‑peak grid charging for a narrow overnight window, then scheduled peak‑time discharge across late afternoon. The inverter respected those windows, preserving battery capacity for the expensive hours without micromanagement. If you’re on time‑of‑use rates, this is the kind of feature that pays for itself.

Monitoring and communications

Out of the box, Wi‑Fi monitoring gives you the basics: power flows, PV harvest, battery SOC, and alarms. It’s perfectly serviceable for daily checks, but historical analytics and deeper battery telemetry are limited. You do get USB/CAN/RS485 for tying into a compatible BMS or third‑party data logger, which is how I pulled extended data and set up remote dashboards. If you care about long‑term insights, plan on integrating with external software or a home automation gateway.

Safety, compliance, and protections

The inverter carries UL1741 certification, which matters for both safety and inspector confidence. In daily operation, it flagged mis‑wires and out‑of‑range conditions helpfully, and it includes the expected protections: PV and AC over/under‑voltage, battery over‑voltage, and overload. The 6 HP motor load rating aligns with what I experienced on pump starts. As always, compliance with interconnection and export rules is site‑specific; this unit can operate in non‑export hybrid modes, which is how I used it.

What could be better

• AC terminal size: Output terminals limited to 8 AWG are a mismatch for the power class. Plan for reducers or a short pigtail to a subpanel.
• Documentation: The manual covers everything, but some setting interactions aren’t clearly explained. Expect a bit of trial and error on your first pass.
• App depth: The stock app is fine for status checks, but it’s light on granular battery data and historical reporting. Communications ports help, but it’s another piece to configure.
• Weight and footprint: To be expected for 10 kW, but still something to plan for during installation.

None of these are dealbreakers, but they’re the kind of practicalities that separate a smooth install from a frustrating one.

Who it suits

• Off‑grid and backup systems that need split‑phase 120/240 V, including well pumps, shop tools, and HVAC air handlers.
• Hybrid users on time‑of‑use plans who want to schedule charging and prioritize solar without exporting.
• Installers who value dual MPPTs with high string voltage to simplify array wiring and reduce balance‑of‑system costs.
• Lithium battery users who want BMS comms, plus folks with legacy AGM/gel banks who need flexible charge profiles.

If you’re building a code‑inspected hybrid system, UL1741 helps. If you’re trying to do advanced export controls or need utility‑certified grid‑tie features beyond non‑export hybrid operation, confirm requirements—this unit shines most as an off‑grid/backup/hybrid workhorse rather than a utility‑interactive microinverter.

Final take

The Sungoldpower 10kW inverter is a capable, high‑value all‑in‑one that delivers where it matters: clean split‑phase power, stout surge capacity, efficient dual‑MPPT solar harvest, fast transfer, and intelligent time‑of‑use scheduling. Battery support is broad and well executed, and the hardware feels purpose‑built rather than cobbled together. You’ll trade a bit of convenience in wiring and you may outgrow the stock app if you like deep data, but the core power electronics and control logic are solid.

Recommendation: I recommend it. If you need a single box to anchor a 48 V, 10 kW hybrid or off‑grid system, this inverter offers strong performance, meaningful configurability, and the right safety pedigree. Plan your wiring terminations, set aside time to understand the operating modes, and consider augmenting monitoring—and you’ll have a reliable backbone for your system.