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GB-SL-EU (2 modules in series) vs HS7.5 4 of 15 identical Swap Change batteries

Deye GB-SL-EU (2 modules in series) vs FoxESS HS7.5

Deye GB-SL-EU (2 modules in series)
GB-SL-EU (2 modules in series)
7.36 kWh LFP HV
Open battery page Datasheet PDF
VS
HS7.5
7.15 kWh LFP HV
Open battery page Datasheet PDF
The verdict

GB-SL-EU (2 modules in series) leads on the differences that matter

The largest is usable energy: 0.21 kWh apart. 4 of 15 comparable parameters are identical, with 18 more left out because at least one datasheet does not publish them.

See all 11 differences
How alike are they
4 of 15 comparable
parameters are identical
identical differs not published
01

What actually differs

11 of 15 parameters
Parameter GB-SL-EU (2 modules in series) HS7.5 Difference
Usable energy 7.36 kWh 7.15 kWh 0.21 kWh apart
Max system capacity 24.5 kWh 19.6 kWh 4.9 kWh more room to expand
Nominal energy 8.18 kWh 7.37 kWh 0.81 kWh apart
Nominal voltage 205 V 154 V 51 V apart
Min operating temperature -20 °C -10 °C 10 °C more cold tolerant
Cycle test depth 90 % 80 % 10 pp apart
Max operating temperature 60 °C 55 °C 5 °C more heat tolerant
Inverter Built in (all-in-one) None (battery only) Built in (all-in-one) vs None (battery only)
Ingress protection IP65 IP21 IP65 vs IP21
Modules per stack 2-6 2-8 2-6 vs 2-8
Operating voltage 179.2-691.2 V 129.6-175.2 V 179.2-691.2 V vs 129.6-175.2 V

Shop prices by brand: See 44 Deye offers · See 21 FoxESS offers

02

Full specification

Parameter GB-SL-EU (2 modules in series) HS7.5 Difference
Capacity
Usable energy 7.36 kWh 7.15 kWh 0.21 kWh apart
Nominal energy 8.18 kWh 7.37 kWh 0.81 kWh apart
Depth of discharge 90 % - Not published by FoxESS
Max system capacity 24.5 kWh 19.6 kWh +4.9 kWh for GB-SL-EU (2 modules in series)
Modules per stack 2-6 2-8 2-6 vs 2-8
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 - - Neither datasheet publishes this
Cycle life 6000 cycles 6000 cycles Same
Cycle test depth 90 % 80 % 10 pp apart
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 205 V 154 V 51 V apart
Operating voltage 179.2-691.2 V 129.6-175.2 V 179.2-691.2 V vs 129.6-175.2 V
Cell chemistry LFP LFP Same
Active cell balancing - - Neither datasheet publishes this
Thermal management Yes - Not published by FoxESS
Built-in inverter
Inverter Built in (all-in-one) None (battery only) Built in (all-in-one) vs None (battery only)
Inverter power - - Neither datasheet publishes this
Grid connection 3-phase - Not published by FoxESS
Backup power - - Neither datasheet publishes this
Physical
Weight 137.0 kg - Not published by FoxESS
Weight per kWh 18.6 kg/kWh - Not published by FoxESS
Dimensions 1100x540x385 mm - Not published by FoxESS
Ingress protection IP65 IP21 IP65 vs IP21
Outdoor-rated - - Neither datasheet publishes this
Min operating temperature -20 °C -10 °C -10 °C for GB-SL-EU (2 modules in series)
Max operating temperature 60 °C 55 °C +5 °C for GB-SL-EU (2 modules in series)
Warranty
Warranty 10 yrs 10 yrs Same
Warranted throughput - - Neither datasheet publishes this
03

More useful comparisons

Open all batteries
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Deye GB-SL-EU (2 modules in series) vs Deye GB-L8
5 differences, the largest is weight
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Deye GB-SL-EU (2 modules in series) vs Dyness Tower Pro TP7
15 differences, the largest is cycle life
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Deye GB-SL-EU (2 modules in series) vs FoxESS ECS4300H-H2
11 differences, the largest is max system capacity
Similar capacity
FoxESS HS7.5 vs Dyness Tower T7
6 differences, the largest is nominal energy
04

Written summary

Every figure here is from the manufacturers' own datasheets - a dash means the value is not published, never an estimate.