FoxESS ECS4300H-H2 vs Deye GB-SL-EU (2 modules in series)
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The verdict
ECS4300H-H2 leads on the differences that matter
The largest is max system capacity: 4.4 kWh more room to expand. 7 of 18 comparable parameters are identical, with 15 more left out because at least one datasheet does not publish them.
See all 11 differencesHow alike are they
7
of 18 comparable
parameters are identical
parameters are identical
identical
differs
not published
01
11 of 18 parameters
What actually differs
Parameter
ECS4300H-H2
GB-SL-EU (2 modules in series)
Difference
Max system capacity
29.0 kWh
24.5 kWh
4.4 kWh more room to expand
Usable energy
7.46 kWh
7.36 kWh
0.10 kWh apart
Nominal voltage
115 V
205 V
90 V apart
Weight
78.5 kg
137.0 kg
58.5 kg lighter
Weight per kWh
10.5 kg/kWh
18.6 kg/kWh
8.1 kg/kWh lighter
Nominal energy
8.29 kWh
8.18 kWh
0.11 kWh apart
Max operating temperature
55 °C
60 °C
5 °C more heat tolerant
Inverter
None (battery only)
Built in (all-in-one)
None (battery only) vs Built in (all-in-one)
Modules per stack
2-7
2-6
2-7 vs 2-6
Operating voltage
97.2-131.4 V
179.2-691.2 V
97.2-131.4 V vs 179.2-691.2 V
Dimensions
366x570x380 mm
1100x540x385 mm
366x570x380 mm vs 1100x540x385 mm
Shop prices by brand: See 21 FoxESS offers · See 44 Deye offers
02
Full specification
Parameter
ECS4300H-H2
GB-SL-EU (2 modules in series)
Difference
Capacity
Usable energy
7.46 kWh
7.36 kWh
0.10 kWh apart
Nominal energy
8.29 kWh
8.18 kWh
0.11 kWh apart
Depth of discharge
90 %
90 %
Same
Max system capacity
29.0 kWh
24.5 kWh
+4.4 kWh for ECS4300H-H2
Modules per stack
2-7
2-6
2-7 vs 2-6
Power
Continuous discharge power
-
-
Neither datasheet publishes this
Continuous charge power
-
-
Neither datasheet publishes this
Peak discharge power
-
-
Neither datasheet publishes this
Power per kWh
-
-
Neither datasheet publishes this
Efficiency and lifetime
Round-trip efficiency
95.0 %
-
Not published by Deye
Cycle life
6000 cycles
6000 cycles
Same
Cycle test depth
90 %
90 %
Same
Capacity at end of life
-
70 %
Not published by FoxESS
Self-discharge
-
-
Neither datasheet publishes this
Electrical
Voltage class
High voltage
High voltage
Same
Nominal voltage
115 V
205 V
90 V apart
Operating voltage
97.2-131.4 V
179.2-691.2 V
97.2-131.4 V vs 179.2-691.2 V
Cell chemistry
LFP
LFP
Same
Active cell balancing
-
-
Neither datasheet publishes this
Thermal management
-
Yes
Not published by FoxESS
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
-
3-phase
Not published by FoxESS
Backup power
-
-
Neither datasheet publishes this
Physical
Weight
78.5 kg
137.0 kg
-58.5 kg for ECS4300H-H2
Weight per kWh
10.5 kg/kWh
18.6 kg/kWh
-8.1 kg/kWh for ECS4300H-H2
Dimensions
366x570x380 mm
1100x540x385 mm
366x570x380 mm vs 1100x540x385 mm
Ingress protection
IP65
IP65
Same
Outdoor-rated
Yes
-
Not published by Deye
Min operating temperature
-20 °C
-20 °C
Same
Max operating temperature
55 °C
60 °C
+5 °C for GB-SL-EU (2 modules in series)
Warranty
Warranty
-
10 yrs
Not published by FoxESS
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.