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HS15 vs GB-SL-EU (4 modules in series) 4 of 15 identical Swap Change batteries

FoxESS HS15 vs Deye GB-SL-EU (4 modules in series)

HS15
14.29 kWh LFP HV
Open battery page Datasheet PDF
VS
Deye GB-SL-EU (4 modules in series)
GB-SL-EU (4 modules in series)
14.72 kWh LFP HV
Open battery page Datasheet PDF
The verdict

GB-SL-EU (4 modules in series) leads on the differences that matter

The largest is usable energy: 0.43 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 HS15 GB-SL-EU (4 modules in series) Difference
Usable energy 14.29 kWh 14.72 kWh 0.43 kWh apart
Max system capacity 19.6 kWh 24.5 kWh 4.9 kWh more room to expand
Nominal energy 14.74 kWh 16.36 kWh 1.62 kWh apart
Nominal voltage 307 V 410 V 102 V apart
Min operating temperature -10 °C -20 °C 10 °C more cold tolerant
Cycle test depth 80 % 90 % 10 pp 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)
Ingress protection IP21 IP65 IP21 vs IP65
Modules per stack 2-8 2-6 2-8 vs 2-6
Operating voltage 259.2-350.4 V 179.2-691.2 V 259.2-350.4 V vs 179.2-691.2 V

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

02

Full specification

Parameter HS15 GB-SL-EU (4 modules in series) Difference
Capacity
Usable energy 14.29 kWh 14.72 kWh 0.43 kWh apart
Nominal energy 14.74 kWh 16.36 kWh 1.62 kWh apart
Depth of discharge - 90 % Not published by FoxESS
Max system capacity 19.6 kWh 24.5 kWh +4.9 kWh for GB-SL-EU (4 modules in series)
Modules per stack 2-8 2-6 2-8 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 - - Neither datasheet publishes this
Cycle life 6000 cycles 6000 cycles Same
Cycle test depth 80 % 90 % 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 307 V 410 V 102 V apart
Operating voltage 259.2-350.4 V 179.2-691.2 V 259.2-350.4 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 - 215.0 kg Not published by FoxESS
Weight per kWh - 14.6 kg/kWh Not published by FoxESS
Dimensions - 1540x540x385 mm Not published by FoxESS
Ingress protection IP21 IP65 IP21 vs IP65
Outdoor-rated - - Neither datasheet publishes this
Min operating temperature -10 °C -20 °C -10 °C for GB-SL-EU (4 modules in series)
Max operating temperature 55 °C 60 °C +5 °C for GB-SL-EU (4 modules in series)
Warranty
Warranty 10 yrs 10 yrs Same
Warranted throughput - - 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.