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SG2.5RS-S vs SB2.5-1VL-40 (Sunny Boy 2.5) 14 of 24 identical Swap Change inverters

Sungrow SG2.5RS-S vs SMA Solar SB2.5-1VL-40 (Sunny Boy 2.5)

Sungrow SG2.5RS-S
Sungrow
SG2.5RS-S
2.5 kW 97.2 % euro Grid-tie
Open inverter page Datasheet PDF
VS
SMA Solar SB2.5-1VL-40 (Sunny Boy 2.5)
SMA Solar
SB2.5-1VL-40 (Sunny Boy 2.5)
2.5 kW 96.7 % euro Grid-tie
Open inverter page Datasheet PDF
The verdict

SG2.5RS-S leads on the differences that matter

The largest is european efficiency: 0.5 pp more efficient. 14 of 24 comparable parameters are identical, with 8 more left out because at least one datasheet does not publish them.

See all 10 differences
How alike are they
14 of 24 comparable
parameters are identical
identical differs not published
01

What actually differs

10 of 24 parameters
Parameter SG2.5RS-S SB2.5-1VL-40 (Sunny Boy 2.5) Difference
European efficiency 97.2 % 96.7 % 0.5 pp more efficient
Max input current per tracker 16.0 A 10.0 A 6.0 A more headroom
Max efficiency 97.8 % 97.2 % 0.6 pp more efficient
Max PV power 3.75 kW 5.00 kW 1.25 kW apart
DC/AC ratio 1.50 2.00 0.50 more oversizing headroom
Weight 6.0 kg 9.2 kg 3.2 kg lighter
Weight per kW 2.4 kg/kW 3.7 kg/kW 1.3 kg/kW lighter
Start voltage 50 V 80 V 30 V earlier start
MPPT voltage range 40-560 V 160-500 V 40-560 V vs 160-500 V
Dimensions 225x320x120 mm 357x460x122 mm 225x320x120 mm vs 357x460x122 mm
02

Full specification

Parameter SG2.5RS-S SB2.5-1VL-40 (Sunny Boy 2.5) Difference
AC output
Rated AC power 2.50 kW 2.50 kW Same
Max AC power 2.50 kW 2.50 kW Same
Grid connection Single-phase Single-phase Same
Nominal AC voltage 230 V 230 V Same
Max AC current 11.4 A 11.0 A Effectively the same
PV input
Max PV power 3.75 kW 5.00 kW 1.25 kW apart
DC/AC ratio 1.50 2.00 +0.50 for SB2.5-1VL-40 (Sunny Boy 2.5)
Max DC voltage 600 V 600 V Same
MPPT voltage range 40-560 V 160-500 V 40-560 V vs 160-500 V
Start voltage 50 V 80 V -30 V for SG2.5RS-S
MPP trackers 1 1 Same
Strings per tracker 1 1 Same
Max input current per tracker 16.0 A 10.0 A +6.0 A for SG2.5RS-S
Efficiency
European efficiency 97.2 % 96.7 % +0.5 pp for SG2.5RS-S
Max efficiency 97.8 % 97.2 % +0.6 pp for SG2.5RS-S
CEC efficiency - - Neither datasheet publishes this
Battery
Battery input - - Neither datasheet publishes this
Battery voltage - - Neither datasheet publishes this
Max charge current - - Neither datasheet publishes this
Backup power - - Neither datasheet publishes this
Physical
Weight 6.0 kg 9.2 kg -3.2 kg for SG2.5RS-S
Weight per kW 2.4 kg/kW 3.7 kg/kW -1.3 kg/kW for SG2.5RS-S
Dimensions 225x320x120 mm 357x460x122 mm 225x320x120 mm vs 357x460x122 mm
Ingress protection IP65 IP65 Same
Cooling natural natural Same
Noise - 25 dB Not published by Sungrow
Max operating temperature 60 °C 60 °C Same
Connectivity and safety
Wi-Fi Yes Yes Same
Ethernet Yes Yes Same
Arc fault protection Yes - Not published by SMA Solar
Integrated DC switch Yes Yes Same
Warranty
Warranty - 5 yrs Not published by Sungrow
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.