Cotek SP-1000-148
#13 in Up to 1,500 WFull review
A plain, efficient 1,000 W inverter for a 48 V cabin or shop bank that plugs loads in directly.
Amazon $406$406
The Cotek SP-1000-148 is the better 48V inverter overall, rated 2.6 to 1.9. The Cotek SP-1000-148 leads on value, efficiency and warranty. The Exeltech XP-1100 48V wins on idle draw. The Cotek SP-1000-148 costs $557 less ($406 vs $963).
Exeltech XP-1100 48V
#18 in Up to 1,500 WFull review
For industrial or telecom 48 V systems that want a simple 1,100 W inverter with low idle draw; homes and RVs have better-listed options.
Toboa Energy $963$963
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 Cotek SP-1000-148 for value ($0.41 per continuous watt vs $0.88 per continuous watt), efficiency (93% peak efficiency (maker rating) vs 89% peak efficiency (maker rating)) and warranty (2-year warranty vs 1-year warranty).
- Choose the Exeltech XP-1100 48V for idle draw (20 W idle with nothing plugged in vs 24 W idle with nothing plugged in).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every up to 1,500 W 48V inverter; a clear win is highlighted. How we rank explains each one.
| Factor weight | Cotek SP-1000-148 | Exeltech XP-1100 48V |
|---|---|---|
| Overall rating | 2.6/5 | 1.9/5 |
| Value 30% | 49 $0.41 per continuous watt | 0 $0.88 per continuous watt |
| Idle draw 15% | 25 24 W idle with nothing plugged in | 42 20 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% | 25 2-year warranty | 0 1-year warranty |
| Features 15% | 10 optional remote; no app | 10 hardwire terminal; no remote |
| Efficiency 10% | 89 93% peak efficiency (maker rating) | 44 89% peak efficiency (maker rating) |
Specifications
| Cotek SP-1000-148 | Exeltech XP-1100 48V | |
|---|---|---|
| Output | ||
| Type | Pure sine wave inverter | Pure sine wave inverter |
| AC output | 120 V | 120 V |
| Continuous power | 1,000 W | 1,100 W |
| Surge power | 1,750 W for 3 s | 2,200 W for 3 s |
| DC input range | 42 to 66 V | 41.5 to 62 V |
| Idle draw | 24 W (0.5 A at 48 V) | 20 W (0.4 A at 48 V) |
| Power-saving draw | 2.4 W | - |
| Peak efficiency | 93% | 89% |
| Connections | ||
| AC outlets | 2 | 2 |
| GFCI outlets | Yes | No |
| Hardwire terminal | No | Yes |
| USB ports | None | None |
| Transfer switch | No | No |
| Parallel units | No | No |
| Control and build | ||
| Remote | Optional extra | No |
| App | No | No |
| Display | No | No |
| Safety listing | No | No |
| Cooling | load-controlled fan | fan |
| Dimensions | 200 x 83 x 372 mm (7.9 x 3.3 x 14.6 in) | 3.57 x 7.69 x 15.05 in (91 x 195 x 382 mm) |
| Weight | 7.2 lb | 10 lb |
| Warranty | 2 years | 1 year |