WZRELB 5000W Pure Sine (SEVC)
#17 in Over 2,000 WFull review
For buyers who want the biggest possible 12 V inverter for the money and can wire for 400+ A. Its ratings come only from the Amazon listing.
Amazon $461.69$461.69
3.2/5
A low-cost way to get 4000 W on a 12 V system with GFCI outlets. It needs a very large battery bank and heavy cabling to make use of it.
- 4,000 WContinuous
- 7,000 WSurge
- 2.5 AIdle draw
- NoUL listed
- 1.5 yearsWarranty
Check price at Amazon$398.95Check price at Giandel$386.95
Price checked October 24, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- 4000 W runs an RV air conditioner and microwave together on a big bank
- Four GFCI outlets plus a hardwire terminal
- Wired and wireless remotes included
- Adjustable low-voltage cutoff for lithium batteries
Cons
- Up to 2.5 A idle, about 60 Ah a day if left on
- At 4000 W it pulls over 330 A from 12 V, which needs very heavy cable
- No safety listing for the inverter itself
The Giandel GS family
Every Giandel GS model we rank, smallest first. Ratings compare each against its own size.
| Model | Continuous | Rating | Price |
|---|---|---|---|
| Giandel GS-1500SCR 1500W Pure Sine | 1,500 W | 3.2/5 | $186.82 |
| Giandel GS-2000SAR 2000W Pure Sine | 2,000 W | 2.9/5 | $238.82 |
| Giandel GS-4000KAR 4000W Pure Sine (this one) | 4,000 W | 3.2/5 | $386.95 |
How it scores
The rating comes from 6 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.
Specifications
| Model number | GS-4000KAR |
|---|---|
| Output | |
| Type | Pure sine wave inverter |
| Continuous power | 4,000 W |
| Surge power | 7,000 W for 2 s |
| DC input range | 9.5 to 16 V |
| Idle draw | 2.5 A (30 W) |
| Peak efficiency | 91% |
| Connections | |
| AC outlets | 4 |
| GFCI outlets | Yes |
| Hardwire terminal | Yes |
| Transfer switch | No |
| Parallel units | No |
| Control and build | |
| Remote | Included |
| App | No |
| Display | Yes |
| Safety listing | No |
| Dimensions | 14.3 x 8 x 6.8 in |
| Weight | 15.2 lb |
| Warranty | 1.5 years |
Alternatives in this size
Xantrex Freedom X 3000
#18 in Over 2,000 WFull review
For RVs with a separate charger that need 3000 W for kitchen loads. It is listed, light and switches to shore power automatically, but has no built-in charger.
Amazon $1,045.72$1,045.72
Go Power! ASW-3000-12-TS
#20 in Over 2,000 WFull review
For RVs that already have a converter or solar charging and want an inverter with a built-in transfer switch.
Amazon $941.57$941.57
Compare
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