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HS20 vs BOS-G20 6 of 15 identical Swap Change batteries

FoxESS HS20 vs Deye BOS-G20

HS20
19.06 kWh LFP HV
Open battery page Datasheet PDF
VS
Deye BOS-G20
BOS-G20
18.43 kWh LFP HV
Open battery page Datasheet PDF
The verdict

BOS-G20 leads on the differences that matter

The largest is usable energy: 0.63 kWh apart. 6 of 15 comparable parameters are identical, with 18 more left out because at least one datasheet does not publish them.

See all 9 differences
How alike are they
6 of 15 comparable
parameters are identical
identical differs not published
01

What actually differs

9 of 15 parameters
Parameter HS20 BOS-G20 Difference
Usable energy 19.06 kWh 18.43 kWh 0.63 kWh apart
Max system capacity 19.6 kWh 61.4 kWh 41.8 kWh more room to expand
Nominal energy 19.66 kWh 20.48 kWh 0.82 kWh apart
Nominal voltage 410 V 205 V 205 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 IP20 IP21 vs IP20
Modules per stack 2-8 3-12 2-8 vs 3-12
Operating voltage 345.6-467.2 V 166.4-233.6 V 345.6-467.2 V vs 166.4-233.6 V

Shop prices by brand: See 31 FoxESS offers · See 44 Deye offers

02

Full specification

Parameter HS20 BOS-G20 Difference
Capacity
Usable energy 19.06 kWh 18.43 kWh 0.63 kWh apart
Nominal energy 19.66 kWh 20.48 kWh 0.82 kWh apart
Depth of discharge - 90 % Not published by FoxESS
Max system capacity 19.6 kWh 61.4 kWh +41.8 kWh for BOS-G20
Modules per stack 2-8 3-12 2-8 vs 3-12
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 410 V 205 V 205 V apart
Operating voltage 345.6-467.2 V 166.4-233.6 V 345.6-467.2 V vs 166.4-233.6 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 - 420.0 kg Not published by FoxESS
Weight per kWh - 22.8 kg/kWh Not published by FoxESS
Dimensions - 1629x530x602 mm Not published by FoxESS
Ingress protection IP21 IP20 IP21 vs IP20
Outdoor-rated - - Neither datasheet publishes this
Min operating temperature -10 °C -20 °C -10 °C for BOS-G20
Max operating temperature 55 °C 55 °C Same
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.