FoxESS HS5 vs BYD Battery-Box Premium HVS 5.1
VS
The verdict
HS5 leads on the differences that matter
The largest is usable energy: 0.36 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 differencesHow alike are they
5
of 14 comparable
parameters are identical
parameters are identical
identical
differs
not published
01
9 of 14 parameters
What actually differs
Parameter
HS5
Battery-Box Premium HVS 5.1
Difference
Usable energy
4.76 kWh
5.12 kWh
0.36 kWh apart
Max system capacity
19.6 kWh
12.8 kWh
6.8 kWh more room to expand
Nominal energy
4.91 kWh
5.12 kWh
0.21 kWh apart
Nominal voltage
102 V
205 V
102 V apart
Cycle test depth
80 %
100 %
20 pp apart
Max operating temperature
55 °C
50 °C
5 °C more heat tolerant
Ingress protection
IP21
IP55
IP21 vs IP55
Modules per stack
2-8
2-5
2-8 vs 2-5
Operating voltage
86.4-116.8 V
160-240 V
86.4-116.8 V vs 160-240 V
02
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HS5
Battery-Box Premium HVS 5.1
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03
Full specification
Parameter
HS5
Battery-Box Premium HVS 5.1
Difference
Capacity
Usable energy
4.76 kWh
5.12 kWh
0.36 kWh apart
Nominal energy
4.91 kWh
5.12 kWh
0.21 kWh apart
Depth of discharge
-
100 %
Not published by FoxESS
Max system capacity
19.6 kWh
12.8 kWh
+6.8 kWh for HS5
Modules per stack
2-8
2-5
2-8 vs 2-5
Power
Continuous discharge power
-
5.12 kW
Not published by FoxESS
Continuous charge power
-
5.12 kW
Not published by FoxESS
Peak discharge power
-
10.24 kW
Not published by FoxESS
Power per kWh
-
1.00 kW/kWh
Not published by FoxESS
Efficiency and lifetime
Round-trip efficiency
-
96.0 %
Not published by FoxESS
Cycle life
6000 cycles
-
Not published by BYD
Cycle test depth
80 %
100 %
20 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
102 V
205 V
102 V apart
Operating voltage
86.4-116.8 V
160-240 V
86.4-116.8 V vs 160-240 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
-
91.0 kg
Not published by FoxESS
Weight per kWh
-
17.8 kg/kWh
Not published by FoxESS
Dimensions
-
762x585x298 mm
Not published by FoxESS
Ingress protection
IP21
IP55
IP21 vs IP55
Outdoor-rated
-
Yes
Not published by FoxESS
Min operating temperature
-10 °C
-10 °C
Same
Max operating temperature
55 °C
50 °C
+5 °C for HS5
Warranty
Warranty
10 yrs
10 yrs
Same
Warranted throughput
-
-
Neither datasheet publishes this
04
Open all batteries
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05
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.