For 50 A RVs that want an inverter-charger able to pass both shore power legs through.
Amazon $2,040.98
A budget 3000 W inverter-charger for off-grid cabins and DIY RV builds that need a big charger. Specs come only from the Amazon listing.
- 3,000 WContinuous
- 6,000 WSurge
- NoUL listed
- 1 yearWarranty
Price checked October 24, 2026. As an Amazon Associate we earn from qualifying purchases.
- 100 A charger refills a 200 Ah LiFePO4 bank in about two hours
- Runs a microwave, coffee maker or small air conditioner
- Passes shore power through and switches to battery in an outage
- Low price for a 3000 W inverter-charger
- Display and remote panel cost extra
- No published idle draw or spec sheet, and no safety listing
- One-year warranty
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 | L03NBCDQ3KWUS |
|---|---|
| Output | |
| Type | Pure sine wave inverter-charger |
| Continuous power | 3,000 W |
| Surge power | 6,000 W |
| Peak efficiency | 90% |
| Connections | |
| Transfer switch | Yes |
| Charger | 100 A |
| Lithium charge profile | Yes |
| Parallel units | No |
| Control and build | |
| Remote | Optional extra |
| App | No |
| Display | No |
| Safety listing | No |
| Dimensions | 17.0 x 11.3 x 4.3 in |
| Weight | 16.3 lb |
| Warranty | 1 year |
Alternatives in this size
The largest 12 V model in SunGoldPower’s low-frequency line, for cabins that need surge capacity. At this size a 24 V or 48 V system is usually the better choice.
SunGoldPower $1,020A popular low-frequency inverter-charger for off-grid cabins and backup systems with big motor loads.
Amazon $911 SunGoldPower $859Compare
Compare the ECO-WORTHY 3000W Inverter Charger with any other 12V inverter →
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