SunGoldPower 18000W 48V Split Phase
For a large off-grid home on 48 V that needs 18 kW of 120/240 V from one box on a budget. The short warranty and unverified listing are the trade-offs.
Amazon $3,950$3,950
The SunGoldPower 18000W 48V Split Phase and the SunGoldPower 15000W 48V Split Phase are evenly matched, rated 2.8 and 2.8. The SunGoldPower 15000W 48V Split Phase costs $600 less ($3,350 vs $3,950).
SunGoldPower 15000W 48V Split Phase
For a large off-grid home on 48 V that needs 15 kW of 120/240 V from one box on a budget. The short warranty and unverified listing are the trade-offs.
Amazon $3,463.43 SunGoldPower $3,350$3,350
Prices were last checked October 24, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every split-phase inverter-chargers 48V inverter; a clear win is highlighted. How we rank explains each one.
| Factor weight | SunGoldPower 18000W 48V Split Phase | SunGoldPower 15000W 48V Split Phase |
|---|---|---|
| Overall rating | 2.8/5 | 2.8/5 |
| Value 30% | 74 $0.22 per continuous watt | 73 $0.22 per continuous watt |
| Idle draw 15% | 0 270 W idle with nothing plugged in | 0 225 W idle with nothing plugged in |
| Safety listing 15% | 0 no UL 458 or UL 1741 listing stated | 0 no UL 458 or UL 1741 listing stated |
| Warranty 15% | 0 1-year warranty | 0 1-year warranty |
| Features 15% | 80 remote included, lithium charge profile, 120/240 V split-phase, hardwire terminal, display; no app | 80 remote included, lithium charge profile, 120/240 V split-phase, hardwire terminal, display; no app |
| Efficiency 10% | 33 88% peak efficiency (maker rating) | 33 88% peak efficiency (maker rating) |
Specifications
| SunGoldPower 18000W 48V Split Phase | SunGoldPower 15000W 48V Split Phase | |
|---|---|---|
| Output | ||
| Type | Pure sine wave inverter-charger | Pure sine wave inverter-charger |
| AC output | 120/240 V split-phase | 120/240 V split-phase |
| Continuous power | 18,000 W | 15,000 W |
| Surge power | 54,000 W for 20 s | 45,000 W for 20 s |
| DC input range | 40 to 64 V | 40 to 64 V |
| Idle draw | 270 W (5.6 A at 48 V) | 225 W (4.7 A at 48 V) |
| Power-saving draw | 50 W | 45 W |
| Peak efficiency | 88% | 88% |
| Connections | ||
| AC outlets | 0 | 0 |
| GFCI outlets | No | No |
| Hardwire terminal | Yes | Yes |
| USB ports | None | None |
| Transfer switch | Yes | Yes |
| Pass-through rating | 100 A | 100 A |
| Charger | 95 A | 135 A |
| Lithium charge profile | Yes | Yes |
| Parallel units | No | No |
| Control and build | ||
| Remote | Included | Included |
| App | No | No |
| Display | Yes | Yes |
| Safety listing | No | No |
| Design | Low-frequency (transformer) | Low-frequency (transformer) |
| Cooling | load-controlled fan | load-controlled fan |
| Dimensions | 706 x 415 x 230 mm (27.8 x 16.3 x 9.1 in) | 706 x 415 x 230 mm (27.8 x 16.3 x 9.1 in) |
| Weight | 177.5 lb | 170.9 lb |
| Warranty | 1 year | 1 year |