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HS20 vs ECS4300H-H5 5 of 14 identical Swap Change batteries

FoxESS HS20 vs FoxESS ECS4300H-H5

HS20
19.06 kWh LFP HV
Open battery page Datasheet PDF
VS
FoxESS ECS4300H-H5
ECS4300H-H5
18.67 kWh 95.0 % round-trip LFP HV
Open battery page Datasheet PDF
The verdict

ECS4300H-H5 leads on the differences that matter

The largest is usable energy: 0.39 kWh apart. 5 of 14 comparable parameters are identical, with 19 more left out because at least one datasheet does not publish them.

See all 9 differences
How alike are they
5 of 14 comparable
parameters are identical
identical differs not published
01

What actually differs

9 of 14 parameters
Parameter HS20 ECS4300H-H5 Difference
Usable energy 19.06 kWh 18.67 kWh 0.39 kWh apart
Max system capacity 19.6 kWh 29.0 kWh 9.4 kWh more room to expand
Nominal energy 19.66 kWh 20.74 kWh 1.08 kWh apart
Nominal voltage 410 V 288 V 122 V apart
Min operating temperature -10 °C -20 °C 10 °C more cold tolerant
Cycle test depth 80 % 90 % 10 pp apart
Ingress protection IP21 IP65 IP21 vs IP65
Modules per stack 2-8 2-7 2-8 vs 2-7
Operating voltage 345.6-467.2 V 243-328.5 V 345.6-467.2 V vs 243-328.5 V

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02

Full specification

Parameter HS20 ECS4300H-H5 Difference
Capacity
Usable energy 19.06 kWh 18.67 kWh 0.39 kWh apart
Nominal energy 19.66 kWh 20.74 kWh 1.08 kWh apart
Depth of discharge - 90 % Not published by FoxESS
Max system capacity 19.6 kWh 29.0 kWh +9.4 kWh for ECS4300H-H5
Modules per stack 2-8 2-7 2-8 vs 2-7
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 FoxESS
Cycle life 6000 cycles 6000 cycles Same
Cycle test depth 80 % 90 % 10 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 410 V 288 V 122 V apart
Operating voltage 345.6-467.2 V 243-328.5 V 345.6-467.2 V vs 243-328.5 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 - 189.5 kg Not published by FoxESS
Weight per kWh - 10.2 kg/kWh Not published by FoxESS
Dimensions - 750x570x380 mm Not published by FoxESS
Ingress protection IP21 IP65 IP21 vs IP65
Outdoor-rated - Yes Not published by FoxESS
Min operating temperature -10 °C -20 °C -10 °C for ECS4300H-H5
Max operating temperature 55 °C 55 °C Same
Warranty
Warranty 10 yrs - Not published by FoxESS
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.