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SPM 4000TL-HU vs WIT 4K-HU 4 of 22 identical Swap Change inverters

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

Growatt SPM 4000TL-HU
Growatt
SPM 4000TL-HU
4 kW 97.6 % euro Hybrid
Open inverter page Datasheet PDF
VS
Growatt WIT 4K-HU
Growatt
WIT 4K-HU
4 kW 97.0 % euro Hybrid
Open inverter page Datasheet PDF
The verdict

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.

See all 18 differences
How alike are they
4 of 22 comparable
parameters are identical
identical differs not published
01

What actually differs

18 of 22 parameters
Parameter SPM 4000TL-HU WIT 4K-HU Difference
European efficiency 97.6 % 97.0 % 0.6 pp more efficient
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 faster charging
Weight 26.0 kg 38.0 kg 12.0 kg lighter
Weight per kW 6.5 kg/kW 9.5 kg/kW 3.0 kg/kW lighter
Noise 30 dB 50 dB 20 dB quieter
Max efficiency 98.1 % 97.6 % 0.5 pp more efficient
DC/AC ratio 1.50 1.60 0.10 more oversizing headroom
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 earlier start
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
02

Full specification

Parameter SPM 4000TL-HU WIT 4K-HU Difference
AC output
Rated AC power 4.00 kW 4.00 kW Same
Max AC power 4.00 kW 4.40 kW 0.40 kW apart
Grid connection Single-phase 3-phase Single-phase vs 3-phase
Nominal AC voltage 230 V 400 V 170 V apart
Max AC current 17.4 A - Not published by Growatt
PV input
Max PV power 6.00 kW 6.40 kW 0.40 kW apart
DC/AC ratio 1.50 1.60 +0.10 for WIT 4K-HU
Max DC voltage 600 V 1000 V 400 V apart
MPPT voltage range 150-550 V 150-850 V 150-550 V vs 150-850 V
Start voltage 130 V 180 V -50 V for SPM 4000TL-HU
MPP trackers 2 - Not published by Growatt
Strings per tracker 1 - Not published by Growatt
Max input current per tracker 22.0 A - Not published by Growatt
Efficiency
European efficiency 97.6 % 97.0 % +0.6 pp for SPM 4000TL-HU
Max efficiency 98.1 % 97.6 % +0.5 pp for SPM 4000TL-HU
CEC efficiency - - Neither datasheet publishes this
Battery
Battery input Yes Yes Same
Battery voltage 40-60V 40-60V (rated 51.2V) 40-60V vs 40-60V (rated 51.2V)
Max charge current 140 A 290 A +150 A for WIT 4K-HU
Backup power - - Neither datasheet publishes this
Physical
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
Dimensions 330x580x230 mm 698x475x240 mm 330x580x230 mm vs 698x475x240 mm
Ingress protection IP65 IP66 IP65 vs IP66
Cooling natural forced-air natural vs forced-air
Noise 30 dB 50 dB -20 dB for SPM 4000TL-HU
Max operating temperature 60 °C 60 °C Same
Connectivity and safety
Wi-Fi Yes - Not published by Growatt
Ethernet Yes - Not published by Growatt
Arc fault protection - - Neither datasheet publishes this
Integrated DC switch - Yes Not published by Growatt
Warranty
Warranty 5 yrs 5 yrs Same
03

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04

Written summary

Every figure here is from the manufacturers' own datasheets - a dash means the value is not published, never an estimate.