Ampinvt GP 6000W 48V Split Phase
A low-cost split-phase inverter-charger for an off-grid home that may add units later. Strong charger and parallel support, but no safety listing.
Amazon $685$685
The Ampinvt GP 6000W 48V Split Phase is the better 48V inverter overall, rated 3.6 to 3.3. The Ampinvt GP 6000W 48V Split Phase leads on warranty and features. The Ampinvt GP 6000W 48V Split Phase costs $60 less ($685 vs $745).
Ampinvt FT 6000W 48V Split Phase
A budget low-frequency split-phase inverter-charger for an off-grid cabin with a 240 V generator. It handles heavy loads, but documentation is thin and it cannot be stacked.
Amazon $745$745
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 Ampinvt GP 6000W 48V Split Phase for warranty (2-year warranty vs 1-year warranty) and features (app, lithium charge profile, 120/240 V split-phase, display vs optional remote, app add-on, lithium charge profile, 120/240 V split-phase, display).
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 | Ampinvt GP 6000W 48V Split Phase | Ampinvt FT 6000W 48V Split Phase |
|---|---|---|
| Overall rating | 3.6/5 | 3.3/5 |
| Value 30% | 97 $0.11 per continuous watt | 95 $0.12 per continuous watt |
| Idle draw 15% | 50 idle draw not published (neutral score used) | 50 idle draw not published (neutral score used) |
| Safety listing 15% | 0 no UL 458 or UL 1741 listing stated | 0 no UL 458 or UL 1741 listing stated |
| Warranty 15% | 25 2-year warranty | 0 1-year warranty |
| Features 15% | 85 app, lithium charge profile, 120/240 V split-phase, display | 75 optional remote, app add-on, lithium charge profile, 120/240 V split-phase, display |
| Efficiency 10% | 56 90% peak efficiency (maker rating) | 56 90% peak efficiency (maker rating) |
Specifications
| Ampinvt GP 6000W 48V Split Phase | Ampinvt FT 6000W 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 | 6,000 W | 6,000 W |
| Surge power | 18,000 W | 18,000 W |
| Peak efficiency | 90% | 90% |
| Connections | ||
| Transfer switch | Yes | Yes |
| Charger | 80 A | 35 A |
| Lithium charge profile | Yes | Yes |
| Parallel units | Yes | No |
| Control and build | ||
| Remote | - | Optional extra |
| App | Built in | Optional add-on |
| Display | Yes | Yes |
| Safety listing | No | No |
| Design | Low-frequency (transformer) | Low-frequency (transformer) |
| Cooling | fan | fan |
| Dimensions | - | 25.59 x 6.7 x 10.2 in |
| Weight | 70.5 lb | - |
| Warranty | 2 years | 1 year |