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BOS-G35 vs ECS4300H-H7 8 of 18 identical Swap Change batteries

Deye BOS-G35 vs FoxESS ECS4300H-H7

Deye BOS-G35
BOS-G35
32.25 kWh LFP HV
Open battery page Datasheet PDF
VS
FoxESS ECS4300H-H7
ECS4300H-H7
26.13 kWh 95.0 % round-trip LFP HV
Open battery page Datasheet PDF
The verdict

10 differences, and they point both ways

The largest is usable energy: 6.12 kWh apart. 8 of 18 comparable parameters are identical, with 15 more left out because at least one datasheet does not publish them.

See all 10 differences
How alike are they
8 of 18 comparable
parameters are identical
identical differs not published
01

What actually differs

10 of 18 parameters
Parameter BOS-G35 ECS4300H-H7 Difference
Usable energy 32.25 kWh 26.13 kWh 6.12 kWh apart
Max system capacity 61.4 kWh 29.0 kWh 32.5 kWh more room to expand
Nominal energy 35.84 kWh 29.03 kWh 6.81 kWh apart
Nominal voltage 358 V 403 V 45 V apart
Weight 420.0 kg 263.5 kg 156.5 kg lighter
Weight per kWh 13.0 kg/kWh 10.1 kg/kWh 2.9 kg/kWh lighter
Ingress protection IP20 IP65 IP20 vs IP65
Modules per stack 3-12 2-7 3-12 vs 2-7
Operating voltage 291.2-408.8 V 340.2-459.9 V 291.2-408.8 V vs 340.2-459.9 V
Dimensions 1629x530x602 mm 1006x570x380 mm 1629x530x602 mm vs 1006x570x380 mm

Shop prices by brand: See 44 Deye offers · See 21 FoxESS offers

02

Full specification

Parameter BOS-G35 ECS4300H-H7 Difference
Capacity
Usable energy 32.25 kWh 26.13 kWh 6.12 kWh apart
Nominal energy 35.84 kWh 29.03 kWh 6.81 kWh apart
Depth of discharge 90 % 90 % Same
Max system capacity 61.4 kWh 29.0 kWh +32.5 kWh for BOS-G35
Modules per stack 3-12 2-7 3-12 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 Deye
Cycle life 6000 cycles 6000 cycles Same
Cycle test depth 90 % 90 % Same
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 358 V 403 V 45 V apart
Operating voltage 291.2-408.8 V 340.2-459.9 V 291.2-408.8 V vs 340.2-459.9 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 263.5 kg -156.5 kg for ECS4300H-H7
Weight per kWh 13.0 kg/kWh 10.1 kg/kWh -2.9 kg/kWh for ECS4300H-H7
Dimensions 1629x530x602 mm 1006x570x380 mm 1629x530x602 mm vs 1006x570x380 mm
Ingress protection IP20 IP65 IP20 vs IP65
Outdoor-rated - Yes Not published by Deye
Min operating temperature -20 °C -20 °C Same
Max operating temperature 55 °C 55 °C Same
Warranty
Warranty 10 yrs - Not published by FoxESS
Warranted throughput - - Neither datasheet publishes this
03

More useful comparisons

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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.