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G35 vs G40 15 of 20 identical Swap Change batteries

Deye BOS-G35 vs Deye BOS-G40

Deye BOS-G35
BOS-G35
32.25 kWh LFP HV
Open battery page Datasheet PDF
VS
Deye BOS-G40
BOS-G40
36.86 kWh LFP HV
Open battery page Datasheet PDF
The verdict

G40 leads on the differences that matter

The largest is usable energy: 4.61 kWh apart. 15 of 20 comparable parameters are identical, with 13 more left out because at least one datasheet does not publish them.

See all 5 differences
How alike are they
15 of 20 comparable
parameters are identical
identical differs not published
01

What actually differs

5 of 20 parameters
Parameter G35 G40 Difference
Usable energy 32.25 kWh 36.86 kWh 4.61 kWh apart
Nominal energy 35.84 kWh 40.96 kWh 5.12 kWh apart
Nominal voltage 358 V 410 V 51 V apart
Weight per kWh 13.0 kg/kWh 11.4 kg/kWh 1.6 kg/kWh lighter
Operating voltage 291.2-408.8 V 332.8-467.2 V 291.2-408.8 V vs 332.8-467.2 V

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02

Full specification

Parameter G35 G40 Difference
Capacity
Usable energy 32.25 kWh 36.86 kWh 4.61 kWh apart
Nominal energy 35.84 kWh 40.96 kWh 5.12 kWh apart
Depth of discharge 90 % 90 % Same
Max system capacity 61.4 kWh 61.4 kWh Same
Modules per stack 3-12 3-12 Same
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 90 % 90 % Same
Capacity at end of life 70 % 70 % Same
Self-discharge - - Neither datasheet publishes this
Electrical
Voltage class High voltage High voltage Same
Nominal voltage 358 V 410 V 51 V apart
Operating voltage 291.2-408.8 V 332.8-467.2 V 291.2-408.8 V vs 332.8-467.2 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 420.0 kg Same
Weight per kWh 13.0 kg/kWh 11.4 kg/kWh -1.6 kg/kWh for G40
Dimensions 1629x530x602 mm 1629x530x602 mm Same
Ingress protection IP20 IP20 Same
Outdoor-rated - - Neither datasheet publishes this
Min operating temperature -20 °C -20 °C Same
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.