---
title: "Growatt SPM 4000TL-HU vs Growatt WIT 4K-HU - Inverter Comparison | ComparePV"
description: "Compare Growatt SPM 4000TL-HU vs Growatt WIT 4K-HU side by side: what actually differs, efficiency, MPP trackers, battery input and the full specification."
source: "https://comparepv.com/compare-inverters/growatt-spm-4000tl-hu/growatt-wit-4k-hu"
updated: 2026-01-16
---

# Growatt SPM 4000TL-HU vs Growatt WIT 4K-HU

SPM 4000TL-HU leads on the differences that matter

The largest is european efficiency: 0.6 pp more efficient. 4 of 22 comparable parameters are identical, with 10 more left out because at least one datasheet does not publish them.


## The two inverters


| Attribute | A | B |
| --- | --- | --- |
| Inverter | [Growatt SPM 4000TL-HU](https://comparepv.com/inverter/growatt-spm-4000tl-hu) | [Growatt WIT 4K-HU](https://comparepv.com/inverter/growatt-wit-4k-hu) |
| Manufacturer | Growatt | Growatt |
| Rated AC power | 4 kW | 4 kW |
| Type | Hybrid | Hybrid |


## Where they differ

Ranked by how much the difference matters, not by datasheet order.


| Parameter | SPM 4000TL-HU | WIT 4K-HU | Difference |
| --- | --- | --- | --- |
| European efficiency | 97.6 % | 97.0 % | +0.6 pp for SPM 4000TL-HU |
| Max DC voltage | 600 V | 1000 V | 400 V apart |
| Max AC power | 4.00 kW | 4.40 kW | 0.40 kW apart |
| Max PV power | 6.00 kW | 6.40 kW | 0.40 kW apart |
| Max charge current | 140 A | 290 A | +150 A for WIT 4K-HU |
| Weight | 26.0 kg | 38.0 kg | -12.0 kg for SPM 4000TL-HU |
| Weight per kW | 6.5 kg/kW | 9.5 kg/kW | -3.0 kg/kW for SPM 4000TL-HU |
| Noise | 30 dB | 50 dB | -20 dB for SPM 4000TL-HU |
| Max efficiency | 98.1 % | 97.6 % | +0.5 pp for SPM 4000TL-HU |
| DC/AC ratio | 1.50 | 1.60 | +0.10 for WIT 4K-HU |
| Grid connection | Single-phase | 3-phase | Single-phase vs 3-phase |
| Nominal AC voltage | 230 V | 400 V | 170 V apart |
| Start voltage | 130 V | 180 V | -50 V for SPM 4000TL-HU |
| Ingress protection | IP65 | IP66 | IP65 vs IP66 |
| MPPT voltage range | 150-550 V | 150-850 V | 150-550 V vs 150-850 V |
| Battery voltage | 40-60V | 40-60V (rated 51.2V) | 40-60V vs 40-60V (rated 51.2V) |
| Dimensions | 330x580x230 mm | 698x475x240 mm | 330x580x230 mm vs 698x475x240 mm |
| Cooling | natural | forced-air | natural vs forced-air |


## Every compared parameter


| Parameter | SPM 4000TL-HU | WIT 4K-HU |
| --- | --- | --- |
| Rated AC power | 4.00 kW | 4.00 kW |
| Max AC power | 4.00 kW | 4.40 kW |
| Grid connection | Single-phase | 3-phase |
| Nominal AC voltage | 230 V | 400 V |
| Max AC current | 17.4 A | - |
| Max PV power | 6.00 kW | 6.40 kW |
| DC/AC ratio | 1.50 | 1.60 |
| Max DC voltage | 600 V | 1000 V |
| MPPT voltage range | 150-550 V | 150-850 V |
| Start voltage | 130 V | 180 V |
| MPP trackers | 2 | - |
| Strings per tracker | 1 | - |
| Max input current per tracker | 22.0 A | - |
| European efficiency | 97.6 % | 97.0 % |
| Max efficiency | 98.1 % | 97.6 % |
| CEC efficiency | - | - |
| Battery input | Yes | Yes |
| Battery voltage | 40-60V | 40-60V (rated 51.2V) |
| Max charge current | 140 A | 290 A |
| Backup power | - | - |
| Weight | 26.0 kg | 38.0 kg |
| Weight per kW | 6.5 kg/kW | 9.5 kg/kW |
| Dimensions | 330x580x230 mm | 698x475x240 mm |
| Ingress protection | IP65 | IP66 |
| Cooling | natural | forced-air |
| Noise | 30 dB | 50 dB |
| Max operating temperature | 60 °C | 60 °C |
| Wi-Fi | Yes | - |
| Ethernet | Yes | - |
| Arc fault protection | - | - |
| Integrated DC switch | - | Yes |
| Warranty | 5 yrs | 5 yrs |


## Related comparisons

- [Growatt SPM 4000TL-HU vs SolarEdge SE4000H](https://comparepv.com/compare-inverters/growatt-spm-4000tl-hu/solaredge-se4000h) - 9 differences, the largest is european efficiency
- [Growatt SPM 4000TL-HU vs Huawei SUN2000L-4KTL](https://comparepv.com/compare-inverters/growatt-spm-4000tl-hu/huawei-sun2000l-4ktl) - 12 differences, the largest is max input current per tracker
- [Growatt SPM 4000TL-HU vs Growatt MOD 4000TL3-HU](https://comparepv.com/compare-inverters/growatt-spm-4000tl-hu/growatt-mod-4000tl3-hu) - 19 differences, the largest is warranty


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Source: https://comparepv.com/compare-inverters/growatt-spm-4000tl-hu/growatt-wit-4k-hu

Not in this file, on the page: a written summary generated on request.