AIMS Power 12000W 48V Split Phase ETL
For a large off-grid or backup home on 48 V that needs a listed, single-box 12 kW split-phase inverter-charger at a lower price than premium brands.
Amazon $4,733.99$4,733.99
The AIMS Power 12000W 48V Split Phase ETL is the better 48V inverter overall, rated 3.2 to 2.6. The AIMS Power 12000W 48V Split Phase ETL leads on safety listing, warranty and efficiency. The Sigineer HP18048D wins on value. The Sigineer HP18048D costs $1,134.99 less ($3,599 vs $4,733.99).
Sigineer HP18048D
For large unpermitted off-grid homes that want 18 kW of split-phase power from one 48 V box, accepting high idle draw.
Sigineer $3,599$3,599
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 AIMS Power 12000W 48V Split Phase ETL for safety listing (ETL listed to UL 1741 and CSA C22.2 No. 107.1 vs no UL 458 or UL 1741 listing stated), warranty (3-year warranty vs 1-year warranty) and efficiency (88% peak efficiency (maker rating) vs 85% peak efficiency (maker rating)).
- Choose the Sigineer HP18048D for value ($0.20 per continuous watt vs $0.39 per continuous watt).
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 | AIMS Power 12000W 48V Split Phase ETL | Sigineer HP18048D |
|---|---|---|
| Overall rating | 3.2/5 | 2.6/5 |
| Value 30% | 35 $0.39 per continuous watt | 78 $0.20 per continuous watt |
| Idle draw 15% | 0 200 W idle with nothing plugged in | 0 350 W idle with nothing plugged in |
| Safety listing 15% | 100 ETL listed to UL 1741 and CSA C22.2 No. 107.1 | 0 no UL 458 or UL 1741 listing stated |
| Warranty 15% | 50 3-year warranty | 0 1-year warranty |
| Features 15% | 80 optional remote, app add-on, lithium charge profile, 120/240 V split-phase, hardwire terminal, display | 60 optional remote, lithium charge profile, 120/240 V split-phase, hardwire terminal; no app |
| Efficiency 10% | 33 88% peak efficiency (maker rating) | 0 85% peak efficiency (maker rating) |
Specifications
| AIMS Power 12000W 48V Split Phase ETL | Sigineer HP18048D | |
|---|---|---|
| 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 | 12,000 W | 18,000 W |
| Surge power | 36,000 W for 20 s | 54,000 W for 20 s |
| DC input range | 40 to 64 V | 40 to 64 V |
| Idle draw | 200 W (4.2 A at 48 V) | 350 W (7.3 A at 48 V) |
| Power-saving draw | 40 W | 45 W |
| Peak efficiency | 88% | 85% |
| Connections | ||
| AC outlets | 2 | 0 |
| GFCI outlets | No | No |
| Hardwire terminal | Yes | Yes |
| USB ports | None | None |
| Transfer switch | Yes | Yes |
| Pass-through rating | 63 A | - |
| Charger | 120 A | 60 A |
| Lithium charge profile | Yes | Yes |
| Parallel units | No | No |
| Control and build | ||
| Remote | Optional extra | Optional extra |
| App | Optional add-on | No |
| Display | Yes | No |
| Safety listing | ETL listed to UL 1741 and CSA C22.2 No. 107.1 | No |
| Design | Low-frequency (transformer) | Low-frequency (transformer) |
| Cooling | load-controlled fan | fan |
| Dimensions | 23.3 x 16.3 x 7.9 in | 32 x 16.3 x 8 in (806 x 415 x 212 mm) |
| Weight | 154 lb | 220 lb |
| Warranty | 3 years | 1 year |
| Released | 2015-10 | - |