Ampinvt FT 5000W 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 $645$645
The Ampinvt FT 5000W 48V Split Phase rates 3.3 among split-phase inverter-chargers 48V inverters; the WZRELB 5000W 48V Pure Sine (SEVC) rates 3.2 among over 1,500 W ones. The WZRELB 5000W 48V Pure Sine (SEVC) costs $157.01 less ($487.99 vs $645).
WZRELB 5000W 48V Pure Sine (SEVC)
#7 in Over 1,500 WFull review
A rock-bottom 5,000 W inverter for DIY 48 V builds that want a hardwire terminal. With no spec sheet or safety listing, it suits buyers who prize price over documentation.
Amazon $487.99$487.99
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
These two sit in different size classes (split-phase inverter-chargers and over 1,500 W), and each is scored against the reference points for its own class, so a rating says how well each does among its own size peers. How we rank explains each factor.
| Factor weight | Ampinvt FT 5000W 48V Split Phase | WZRELB 5000W 48V Pure Sine (SEVC) |
|---|---|---|
| Overall rating | 3.3/5 | 3.2/5 |
| Value 30% | 94 $0.13 per continuous watt | 95 $0.10 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% | 0 1-year warranty | 0 1-year warranty |
| Features 15% | 75 optional remote, app add-on, lithium charge profile, 120/240 V split-phase, display | 40 remote included, hardwire terminal, display; no app |
| Efficiency 10% | 56 90% peak efficiency (maker rating) | 56 90% peak efficiency (maker rating) |
Specifications
| Ampinvt FT 5000W 48V Split Phase | WZRELB 5000W 48V Pure Sine (SEVC) | |
|---|---|---|
| Output | ||
| Type | Pure sine wave inverter-charger | Pure sine wave inverter |
| AC output | 120/240 V split-phase | 120 V |
| Continuous power | 5,000 W | 5,000 W |
| Surge power | 15,000 W | 10,000 W |
| Peak efficiency | 90% | 90% |
| Connections | ||
| AC outlets | - | 4 |
| Hardwire terminal | - | Yes |
| Transfer switch | Yes | No |
| Charger | 35 A | - |
| Lithium charge profile | Yes | - |
| Parallel units | No | No |
| Control and build | ||
| Remote | Optional extra | Included |
| App | Optional add-on | No |
| Display | Yes | Yes |
| Safety listing | No | No |
| Design | Low-frequency (transformer) | - |
| Cooling | fan | fan |
| Dimensions | 23.8 x 6.7 x 10.2 in | 15.7 x 7.2 x 2.9 in |
| Weight | 70.5 lb | 9.2 lb |
| Warranty | 1 year | 1 year |