Sigineer HP15048D
For large unpermitted off-grid homes that want 15 kW of split-phase power from one 48 V box, accepting high idle draw.
Sigineer $3,099$3,099
The Sigineer HP15048D and the SunGoldPower 18000W 48V Split Phase are evenly matched, rated 2.8 and 2.8. The Sigineer HP15048D leads on efficiency. The SunGoldPower 18000W 48V Split Phase wins on features. The Sigineer HP15048D costs $851 less ($3,099 vs $3,950).
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
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.
Which should you buy?
- Choose the Sigineer HP15048D for efficiency (90% peak efficiency (maker rating) vs 88% peak efficiency (maker rating)).
- Choose the SunGoldPower 18000W 48V Split Phase for features (remote included, lithium charge profile, 120/240 V split-phase, hardwire terminal, display; no app vs optional remote, lithium charge profile, 120/240 V split-phase, hardwire terminal; no app).
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 | Sigineer HP15048D | SunGoldPower 18000W 48V Split Phase |
|---|---|---|
| Overall rating | 2.8/5 | 2.8/5 |
| Value 30% | 76 $0.21 per continuous watt | 74 $0.22 per continuous watt |
| Idle draw 15% | 0 300 W idle with nothing plugged in | 0 270 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% | 60 optional remote, lithium charge profile, 120/240 V split-phase, hardwire terminal; no app | 80 remote included, lithium charge profile, 120/240 V split-phase, hardwire terminal, display; no app |
| Efficiency 10% | 56 90% peak efficiency (maker rating) | 33 88% peak efficiency (maker rating) |
Specifications
| Sigineer HP15048D | SunGoldPower 18000W 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 | 15,000 W | 18,000 W |
| Surge power | 45,000 W for 20 s | 54,000 W for 20 s |
| DC input range | 40 to 64 V | 40 to 64 V |
| Idle draw | 300 W (6.2 A at 48 V) | 270 W (5.6 A at 48 V) |
| Power-saving draw | 40 W | 50 W |
| Peak efficiency | 90% | 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 |
| Charger | 100 A | 95 A |
| Lithium charge profile | Yes | Yes |
| Parallel units | No | No |
| Control and build | ||
| Remote | Optional extra | Included |
| App | No | No |
| Display | No | Yes |
| Safety listing | No | No |
| Design | Low-frequency (transformer) | Low-frequency (transformer) |
| Cooling | fan | load-controlled fan |
| Dimensions | 28 x 16.3 x 8.8 in (706 x 415 x 232 mm) | 706 x 415 x 230 mm (27.8 x 16.3 x 9.1 in) |
| Weight | 182 lb | 177.5 lb |
| Warranty | 1 year | 1 year |