A popular low-frequency inverter-charger for off-grid cabins and backup systems with big motor loads.
Price checked October 24, 2026. As an Amazon Associate we earn from qualifying purchases.
Every SunGoldPower LFP 12V model we rank, smallest first. Ratings compare each against its own size.
| Model | Continuous | Rating | Price |
|---|---|---|---|
| SunGoldPower 2000W LF Inverter Charger | 2,000 W | 3.1/5 | $730 |
| SunGoldPower 3000W LF Inverter Charger (this one) | 3,000 W | 3.2/5 | $859 |
| SunGoldPower 4000W LF Inverter Charger | 4,000 W | 3.3/5 | $1,020 |
| SunGoldPower 4000W LF Split-Phase 12V | 4,000 W | 3.0/5 | $1,040 |
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.
| Model number | LFP3K12V120VSG |
|---|---|
| Output | |
| Type | Pure sine wave inverter-charger |
| Continuous power | 3,000 W |
| Surge power | 9,000 W for 20 s |
| DC input range | 10 to 16 V |
| Power-saving draw | 2.1 A |
| Peak efficiency | 88% |
| Connections | |
| GFCI outlets | Yes |
| Hardwire terminal | Yes |
| Transfer switch | Yes |
| Charger | 90 A |
| Lithium charge profile | Yes |
| Control and build | |
| Remote | Included |
| App | No |
| Display | No |
| Safety listing | No |
| Cooling | load-controlled fan |
| Dimensions | 19.9 x 9.5 x 7.8 in |
| Weight | 52.9 lb |
| Warranty | 1 year |
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 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.
Amazon $499.99A low-cost 3000 W inverter-charger for home backup or a DIY RV that wants UPS changeover and shore charging in one box. Pricier listed units make more sense for RVs that need certification.
Amazon $469.99Compare the SunGoldPower 3000W LF Inverter Charger with any other 12V inverter →
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