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Battery-Box Premium HVS 7.7 vs ECS4300H-H2 4 of 19 identical Swap Change batteries

BYD Battery-Box Premium HVS 7.7 vs FoxESS ECS4300H-H2

Battery-Box Premium HVS 7.7
7.68 kWh 96.0 % round-trip LFP HV
Open battery page Datasheet PDF
VS
FoxESS ECS4300H-H2
ECS4300H-H2
7.46 kWh 95.0 % round-trip LFP HV
Open battery page Datasheet PDF
The verdict

ECS4300H-H2 leads on the differences that matter

The largest is usable energy: 0.22 kWh apart. 4 of 19 comparable parameters are identical, with 14 more left out because at least one datasheet does not publish them.

See all 15 differences
How alike are they
4 of 19 comparable
parameters are identical
identical differs not published
01

What actually differs

15 of 19 parameters
Parameter Battery-Box Premium HVS 7.7 ECS4300H-H2 Difference
Usable energy 7.68 kWh 7.46 kWh 0.22 kWh apart
Max system capacity 12.8 kWh 29.0 kWh 16.2 kWh more room to expand
Round-trip efficiency 96.0 % 95.0 % 1.0 pp less lost per cycle
Nominal energy 7.68 kWh 8.29 kWh 0.61 kWh apart
Depth of discharge 100 % 90 % 10 pp more of the cells usable
Nominal voltage 307 V 115 V 192 V apart
Weight 129.0 kg 78.5 kg 50.5 kg lighter
Weight per kWh 16.8 kg/kWh 10.5 kg/kWh 6.3 kg/kWh lighter
Min operating temperature -10 °C -20 °C 10 °C more cold tolerant
Cycle test depth 100 % 90 % 10 pp apart
Max operating temperature 50 °C 55 °C 5 °C more heat tolerant
Ingress protection IP55 IP65 IP55 vs IP65
Modules per stack 2-5 2-7 2-5 vs 2-7
Operating voltage 240-360 V 97.2-131.4 V 240-360 V vs 97.2-131.4 V
Dimensions 995x585x298 mm 366x570x380 mm 995x585x298 mm vs 366x570x380 mm
02

Price offers

3 shops we track
Shop Battery-Box Premium HVS 7.7 ECS4300H-H2 At this shop
Solaris Energy Poland 13 720 zł incl. VAT - Only Battery-Box Premium HVS 7.7
Consor Energia Poland 31 000 zł incl. VAT - Only Battery-Box Premium HVS 7.7
www.solar-outlet.nl Netherlands 3 298.95 € incl. VAT - Only Battery-Box Premium HVS 7.7

All 3 offers for Battery-Box Premium HVS 7.7

Shop prices by brand: See 121 BYD offers · See 21 FoxESS offers

03

Full specification

Parameter Battery-Box Premium HVS 7.7 ECS4300H-H2 Difference
Capacity
Usable energy 7.68 kWh 7.46 kWh 0.22 kWh apart
Nominal energy 7.68 kWh 8.29 kWh 0.61 kWh apart
Depth of discharge 100 % 90 % +10 pp for Battery-Box Premium HVS 7.7
Max system capacity 12.8 kWh 29.0 kWh +16.2 kWh for ECS4300H-H2
Modules per stack 2-5 2-7 2-5 vs 2-7
Power
Continuous discharge power 7.68 kW - Not published by FoxESS
Continuous charge power 7.68 kW - Not published by FoxESS
Peak discharge power 15.36 kW - Not published by FoxESS
Power per kWh 1.00 kW/kWh - Not published by FoxESS
Efficiency and lifetime
Round-trip efficiency 96.0 % 95.0 % +1.0 pp for Battery-Box Premium HVS 7.7
Cycle life - 6000 cycles Not published by BYD
Cycle test depth 100 % 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 307 V 115 V 192 V apart
Operating voltage 240-360 V 97.2-131.4 V 240-360 V vs 97.2-131.4 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 129.0 kg 78.5 kg -50.5 kg for ECS4300H-H2
Weight per kWh 16.8 kg/kWh 10.5 kg/kWh -6.3 kg/kWh for ECS4300H-H2
Dimensions 995x585x298 mm 366x570x380 mm 995x585x298 mm vs 366x570x380 mm
Ingress protection IP55 IP65 IP55 vs IP65
Outdoor-rated Yes Yes Same
Min operating temperature -10 °C -20 °C -10 °C for ECS4300H-H2
Max operating temperature 50 °C 55 °C +5 °C for ECS4300H-H2
Warranty
Warranty 10 yrs - Not published by FoxESS
Warranted throughput - - Neither datasheet publishes this
04

More useful comparisons

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05

Written summary

Every figure here is from the manufacturers' own datasheets - a dash means the value is not published, never an estimate.