FoxESS HS17.5 vs SMA Home Storage 16.4
VS
The verdict
10 differences, and they point both ways
The largest is usable energy: 0.28 kWh apart. 5 of 15 comparable parameters are identical, with 18 more left out because at least one datasheet does not publish them.
See all 10 differencesHow alike are they
5
of 15 comparable
parameters are identical
parameters are identical
identical
differs
not published
01
10 of 15 parameters
What actually differs
Parameter
HS17.5
SMA Home Storage 16.4
Difference
Usable energy
16.68 kWh
16.40 kWh
0.28 kWh apart
Cycle life
6000 cycles
8000 cycles
2000 cycles more
Max system capacity
19.6 kWh
16.4 kWh
3.2 kWh more room to expand
Nominal energy
17.20 kWh
16.40 kWh
0.80 kWh apart
Nominal voltage
358 V
480 V
122 V apart
Cycle test depth
80 %
100 %
20 pp apart
Max operating temperature
55 °C
50 °C
5 °C more heat tolerant
Ingress protection
IP21
IP65
IP21 vs IP65
Modules per stack
2-8
1-5
2-8 vs 1-5
Operating voltage
302.4-408.8 V
450-540 V
302.4-408.8 V vs 450-540 V
02
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HS17.5
SMA Home Storage 16.4
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03
Full specification
Parameter
HS17.5
SMA Home Storage 16.4
Difference
Capacity
Usable energy
16.68 kWh
16.40 kWh
0.28 kWh apart
Nominal energy
17.20 kWh
16.40 kWh
0.80 kWh apart
Depth of discharge
-
100 %
Not published by FoxESS
Max system capacity
19.6 kWh
16.4 kWh
+3.2 kWh for HS17.5
Modules per stack
2-8
1-5
2-8 vs 1-5
Power
Continuous discharge power
-
17.28 kW
Not published by FoxESS
Continuous charge power
-
17.28 kW
Not published by FoxESS
Peak discharge power
-
-
Neither datasheet publishes this
Power per kWh
-
1.05 kW/kWh
Not published by FoxESS
Efficiency and lifetime
Round-trip efficiency
-
94.5 %
Not published by FoxESS
Cycle life
6000 cycles
8000 cycles
+2000 cycles for SMA Home Storage 16.4
Cycle test depth
80 %
100 %
20 pp apart
Capacity at end of life
-
-
Neither datasheet publishes this
Self-discharge
-
-
Neither datasheet publishes this
Electrical
Voltage class
High voltage
High voltage
Same
Nominal voltage
358 V
480 V
122 V apart
Operating voltage
302.4-408.8 V
450-540 V
302.4-408.8 V vs 450-540 V
Cell chemistry
LFP
LFP
Same
Active cell balancing
-
-
Neither datasheet publishes this
Thermal management
-
-
Neither datasheet publishes this
Built-in inverter
Inverter
None (battery only)
None (battery only)
Same
Inverter power
-
-
Neither datasheet publishes this
Grid connection
-
-
Neither datasheet publishes this
Backup power
-
-
Neither datasheet publishes this
Physical
Weight
-
190.0 kg
Not published by FoxESS
Weight per kWh
-
11.6 kg/kWh
Not published by FoxESS
Dimensions
-
-
Neither datasheet publishes this
Ingress protection
IP21
IP65
IP21 vs IP65
Outdoor-rated
-
Yes
Not published by FoxESS
Min operating temperature
-10 °C
-10 °C
Same
Max operating temperature
55 °C
50 °C
+5 °C for HS17.5
Warranty
Warranty
10 yrs
10 yrs
Same
Warranted throughput
-
-
Neither datasheet publishes this
04
Open all batteries
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05
Written summary
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Every figure here is from the manufacturers' own datasheets - a dash means the value is not published, never an estimate.
