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ISolar SMR II 3.5KW vs SPF 3500 ES 7 of 14 identical Swap Change inverters

Easun Power ISolar SMR II 3.5KW vs Growatt SPF 3500 ES

Easun Power
ISolar SMR II 3.5KW
3.5 kW Off-grid
Open inverter page Datasheet PDF
VS
Growatt SPF 3500 ES
Growatt
SPF 3500 ES
3.5 kW Off-grid
Open inverter page Datasheet PDF
The verdict

ISolar SMR II 3.5KW leads on the differences that matter

The largest is max dc voltage: 50 V apart. 7 of 14 comparable parameters are identical, with 18 more left out because at least one datasheet does not publish them.

See all 7 differences
How alike are they
7 of 14 comparable
parameters are identical
identical differs not published
01

What actually differs

7 of 14 parameters
Parameter ISolar SMR II 3.5KW SPF 3500 ES Difference
Max DC voltage 500 V 450 V 50 V apart
Max PV power 5.50 kW 4.50 kW 1.00 kW apart
DC/AC ratio 1.57 1.29 0.28 more oversizing headroom
Max efficiency 93.5 % 93.0 % 0.5 pp more efficient
Max operating temperature 50 °C 55 °C 5 °C more heat tolerant
MPPT voltage range 120-450 V 120-430 V 120-450 V vs 120-430 V
Dimensions 550x420x225 mm 485x330x135 mm 550x420x225 mm vs 485x330x135 mm
02

Full specification

Parameter ISolar SMR II 3.5KW SPF 3500 ES Difference
AC output
Rated AC power 3.50 kW 3.50 kW Same
Max AC power 3.50 kW 3.50 kW Same
Grid connection Single-phase Single-phase Same
Nominal AC voltage 230 V 230 V Same
Max AC current - - Neither datasheet publishes this
PV input
Max PV power 5.50 kW 4.50 kW 1.00 kW apart
DC/AC ratio 1.57 1.29 +0.28 for ISolar SMR II 3.5KW
Max DC voltage 500 V 450 V 50 V apart
MPPT voltage range 120-450 V 120-430 V 120-450 V vs 120-430 V
Start voltage - - Neither datasheet publishes this
MPP trackers - 1 Not published by Easun Power
Strings per tracker - 1 Not published by Easun Power
Max input current per tracker - - Neither datasheet publishes this
Efficiency
European efficiency - - Neither datasheet publishes this
Max efficiency 93.5 % 93.0 % +0.5 pp for ISolar SMR II 3.5KW
CEC efficiency - - Neither datasheet publishes this
Battery
Battery input Yes Yes Same
Battery voltage - 48VDC Not published by Easun Power
Max charge current - - Neither datasheet publishes this
Backup power - - Neither datasheet publishes this
Physical
Weight 11.5 kg 11.5 kg Same
Weight per kW 3.3 kg/kW 3.3 kg/kW Same
Dimensions 550x420x225 mm 485x330x135 mm 550x420x225 mm vs 485x330x135 mm
Ingress protection - IP20 Not published by Easun Power
Cooling - - Neither datasheet publishes this
Noise - - Neither datasheet publishes this
Max operating temperature 50 °C 55 °C +5 °C for SPF 3500 ES
Connectivity and safety
Wi-Fi - - Neither datasheet publishes this
Ethernet - - Neither datasheet publishes this
Arc fault protection - - Neither datasheet publishes this
Integrated DC switch - - Neither datasheet publishes this
Warranty
Warranty - - Neither datasheet publishes this
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.