Growatt SPF 3500TL LVM-US
#10 in 120 VFull review
For a cabin, shed or backup circuit that needs 3.5 kW of 120 V power from a 48 V battery at a low price. Add a second unit later for 240 V.
Amazon$699
The Growatt SPF 3500TL LVM-US is the better hybrid solar inverter overall, rated 2.9 to 2.7. The Growatt SPF 3500TL LVM-US leads on features and warranty. The Renogy 3500W 48V Solar Inverter Charger wins on efficiency. The Growatt SPF 3500TL LVM-US costs $70.99 less ($699 vs $769.99).
Renogy 3500W 48V Solar Inverter Charger
#16 in 120 VFull review
For a 120 V cabin or shed on a 48 V battery with a modest array. The newer RIV4835PCS-1SS adds a UL listing and a longer warranty for about the same price.
Amazon Renogy $769.99$769.99
Prices were last checked October 23, 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 Growatt SPF 3500TL LVM-US for features (UL 1741 listed, Wi-Fi add-on, parallel stacking; no grid sell-back vs Wi-Fi add-on, battery communication; not UL 1741 listed) and warranty (2-year warranty vs 1-year warranty).
- Choose the Renogy 3500W 48V Solar Inverter Charger for efficiency (90% peak efficiency, 48 W idle vs 90% peak efficiency, 60 W idle).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 120 V hybrid solar inverter; a clear win is highlighted. How we rank explains each one.
| Factor weight | Growatt SPF 3500TL LVM-US | Renogy 3500W 48V Solar Inverter Charger |
|---|---|---|
| Overall rating | 2.9/5 | 2.7/5 |
| Value 30% | 67 $200 per kW of continuous output | 60 $220 per kW of continuous output |
| Solar input 20% | 34 4,500 W of panels, 280 V max, 1 MPPT | 29 4,800 W of panels, 145 V max, 1 MPPT |
| Efficiency 20% | 17 90% peak efficiency, 60 W idle | 27 90% peak efficiency, 48 W idle |
| Features 15% | 60 UL 1741 listed, Wi-Fi add-on, parallel stacking; no grid sell-back | 32 Wi-Fi add-on, battery communication; not UL 1741 listed |
| Warranty 15% | 11 2-year warranty | 0 1-year warranty |
Specifications
| Growatt SPF 3500TL LVM-US | Renogy 3500W 48V Solar Inverter Charger | |
|---|---|---|
| Output | ||
| Output voltage | 120 V single-phase | 120 V single-phase |
| Continuous output | 3,500 W | 3,500 W |
| Surge | 7,000 W | 7,000 W |
| Peak efficiency | 90% | 90% |
| Idle draw | 60 W | 48 W |
| Transfer time | 10 ms | 10 ms |
| Parallel units | Up to 6 units | - |
| Solar | ||
| Max PV power | 4,500 W | 4,800 W |
| Max PV voltage (Voc) | 280 V | 145 V |
| MPPT range | 120 to 225 V | 60 to 115 V |
| MPPT trackers | 1 | 1 |
| PV current per tracker | 22 A | 50 A |
| Runs without battery | Yes | - |
| Battery and grid | ||
| Battery voltage | 48 V | 48 V |
| Battery types | Lithium, lead-acid | Lithium, lead-acid |
| Max charge current | 80 A | 120 A |
| AC charge current | 40 A | 40 A |
| Battery communication | - | Yes |
| Grid sell-back | No | No |
| Generator input | No | - |
| UL 1741 | Yes | No |
| Build | ||
| App monitoring | Optional add-on | Optional add-on |
| Enclosure | IP20 (NEMA Type 1) | IP20 |
| Dimensions | 330 x 485 x 135 mm | 426 x 322 x 124 mm |
| Weight | 26.5 lb | 23.8 lb |
| Warranty | 2 years | 1 year |
| Released | 2023-02 | 2021-01 |