FoxESS ECS2900-H6 vs Sigenergy SigenStor BAT 8.0 system (2 modules)
VS
The verdict
SigenStor BAT 8.0 system (2 modules) leads on the differences that matter
The largest is max system capacity: 28.2 kWh more room to expand. 3 of 12 comparable parameters are identical, with 21 more left out because at least one datasheet does not publish them.
See all 9 differencesHow alike are they
3
of 12 comparable
parameters are identical
parameters are identical
identical
differs
not published
01
9 of 12 parameters
What actually differs
Parameter
ECS2900-H6
SigenStor BAT 8.0 system (2 modules)
Difference
Max system capacity
20.2 kWh
48.4 kWh
28.2 kWh more room to expand
Nominal energy
17.28 kWh
16.12 kWh
1.16 kWh apart
Weight
196.3 kg
164.0 kg
32.3 kg lighter
Weight per kWh
12.6 kg/kWh
10.5 kg/kWh
2.1 kg/kWh lighter
Usable energy
15.55 kWh
15.60 kWh
0.05 kWh apart
Inverter
None (battery only)
Built in (all-in-one)
None (battery only) vs Built in (all-in-one)
Ingress protection
IP65
IP66
IP65 vs IP66
Modules per stack
2-7
1-6
2-7 vs 1-6
Dimensions
830x570x380 mm
910x850x260 mm
830x570x380 mm vs 910x850x260 mm
Shop prices by brand: See 21 FoxESS offers · See 15 Sigenergy offers
02
Full specification
Parameter
ECS2900-H6
SigenStor BAT 8.0 system (2 modules)
Difference
Capacity
Usable energy
15.55 kWh
15.60 kWh
0.05 kWh apart
Nominal energy
17.28 kWh
16.12 kWh
1.16 kWh apart
Depth of discharge
90 %
-
Not published by Sigenergy
Max system capacity
20.2 kWh
48.4 kWh
+28.2 kWh for SigenStor BAT 8.0 system (2 modules)
Modules per stack
2-7
1-6
2-7 vs 1-6
Power
Continuous discharge power
-
8.00 kW
Not published by FoxESS
Continuous charge power
-
8.00 kW
Not published by FoxESS
Peak discharge power
-
12.00 kW
Not published by FoxESS
Power per kWh
-
0.51 kW/kWh
Not published by FoxESS
Efficiency and lifetime
Round-trip efficiency
95.0 %
-
Not published by Sigenergy
Cycle life
6000 cycles
-
Not published by Sigenergy
Cycle test depth
90 %
-
Not published by Sigenergy
Capacity at end of life
-
-
Neither datasheet publishes this
Self-discharge
-
-
Neither datasheet publishes this
Electrical
Voltage class
High voltage
-
Not published by Sigenergy
Nominal voltage
346 V
-
Not published by Sigenergy
Operating voltage
291.6-394.2 V
-
Not published by Sigenergy
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)
Built in (all-in-one)
None (battery only) vs Built in (all-in-one)
Inverter power
-
-
Neither datasheet publishes this
Grid connection
-
-
Neither datasheet publishes this
Backup power
-
-
Neither datasheet publishes this
Physical
Weight
196.3 kg
164.0 kg
-32.3 kg for SigenStor BAT 8.0 system (2 modules)
Weight per kWh
12.6 kg/kWh
10.5 kg/kWh
-2.1 kg/kWh for SigenStor BAT 8.0 system (2 modules)
Dimensions
830x570x380 mm
910x850x260 mm
830x570x380 mm vs 910x850x260 mm
Ingress protection
IP65
IP66
IP65 vs IP66
Outdoor-rated
Yes
-
Not published by Sigenergy
Min operating temperature
-20 °C
-20 °C
Same
Max operating temperature
55 °C
55 °C
Same
Warranty
Warranty
-
-
Neither datasheet publishes this
Warranted throughput
-
-
Neither datasheet publishes this
03
Open all batteries
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04
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.