FoxESS HS12.5 vs BYD Battery-Box Premium HVM 11.0
VS
The verdict
Battery-Box Premium HVM 11.0 leads on the differences that matter
The largest is usable energy: 0.87 kWh apart. 5 of 11 comparable parameters are identical, with 22 more left out because at least one datasheet does not publish them.
See all 6 differencesHow alike are they
5
of 11 comparable
parameters are identical
parameters are identical
identical
differs
not published
01
6 of 11 parameters
What actually differs
Parameter
HS12.5
Battery-Box Premium HVM 11.0
Difference
Usable energy
11.91 kWh
11.04 kWh
0.87 kWh apart
Max system capacity
19.6 kWh
33.1 kWh
13.5 kWh more room to expand
Nominal voltage
256 V
205 V
51 V apart
Max operating temperature
55 °C
50 °C
5 °C more heat tolerant
Ingress protection
IP21
IP55
IP21 vs IP55
Operating voltage
216-292 V
160-236 V
216-292 V vs 160-236 V
02
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Price offers
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HS12.5
Battery-Box Premium HVM 11.0
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Shop prices by brand: See 21 FoxESS offers · See 121 BYD offers
03
Full specification
Parameter
HS12.5
Battery-Box Premium HVM 11.0
Difference
Capacity
Usable energy
11.91 kWh
11.04 kWh
0.87 kWh apart
Nominal energy
12.28 kWh
-
Not published by BYD
Depth of discharge
-
-
Neither datasheet publishes this
Max system capacity
19.6 kWh
33.1 kWh
+13.5 kWh for Battery-Box Premium HVM 11.0
Modules per stack
2-8
-
Not published by BYD
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
-
96.0 %
Not published by FoxESS
Cycle life
6000 cycles
-
Not published by BYD
Cycle test depth
80 %
-
Not published by BYD
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
256 V
205 V
51 V apart
Operating voltage
216-292 V
160-236 V
216-292 V vs 160-236 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
-
-
Neither datasheet publishes this
Weight per kWh
-
-
Neither datasheet publishes this
Dimensions
-
1228x585x298 mm
Not published by FoxESS
Ingress protection
IP21
IP55
IP21 vs IP55
Outdoor-rated
-
-
Neither datasheet publishes this
Min operating temperature
-10 °C
-10 °C
Same
Max operating temperature
55 °C
50 °C
+5 °C for HS12.5
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.