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G40 Pro vs G45 11 of 20 identical Swap Change batteries

Deye BOS-G40 Pro vs Deye BOS-G45

Deye BOS-G40 Pro
BOS-G40 Pro
36.86 kWh LFP HV
Open battery page Datasheet PDF
VS
Deye BOS-G45
BOS-G45
41.47 kWh LFP HV
Open battery page Datasheet PDF
The verdict

9 differences, and they point both ways

The largest is usable energy: 4.61 kWh apart. 11 of 20 comparable parameters are identical, with 13 more left out because at least one datasheet does not publish them.

See all 9 differences
How alike are they
11 of 20 comparable
parameters are identical
identical differs not published
01

What actually differs

9 of 20 parameters
Parameter G40 Pro G45 Difference
Usable energy 36.86 kWh 41.47 kWh 4.61 kWh apart
Max system capacity 81.9 kWh 61.4 kWh 20.5 kWh more room to expand
Nominal energy 40.96 kWh 46.08 kWh 5.12 kWh apart
Nominal voltage 410 V 461 V 51 V apart
Weight 428.0 kg 420.0 kg 8.0 kg lighter
Weight per kWh 11.6 kg/kWh 10.1 kg/kWh 1.5 kg/kWh lighter
Ingress protection IP20 (battery enclosure) IP20 IP20 (battery enclosure) vs IP20
Modules per stack 5-16 3-12 5-16 vs 3-12
Operating voltage 352-467.2 V 374.4-525.6 V 352-467.2 V vs 374.4-525.6 V

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02

Full specification

Parameter G40 Pro G45 Difference
Capacity
Usable energy 36.86 kWh 41.47 kWh 4.61 kWh apart
Nominal energy 40.96 kWh 46.08 kWh 5.12 kWh apart
Depth of discharge 90 % 90 % Same
Max system capacity 81.9 kWh 61.4 kWh +20.5 kWh for G40 Pro
Modules per stack 5-16 3-12 5-16 vs 3-12
Power
Continuous discharge power 40.96 kW - Not published by Deye
Continuous charge power 40.96 kW - Not published by Deye
Peak discharge power 51.20 kW - Not published by Deye
Power per kWh 1.11 kW/kWh - Not published by Deye
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 410 V 461 V 51 V apart
Operating voltage 352-467.2 V 374.4-525.6 V 352-467.2 V vs 374.4-525.6 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 428.0 kg 420.0 kg -8.0 kg for G45
Weight per kWh 11.6 kg/kWh 10.1 kg/kWh -1.5 kg/kWh for G45
Dimensions 1629x530x602 mm 1629x530x602 mm Same
Ingress protection IP20 (battery enclosure) IP20 IP20 (battery enclosure) vs IP20
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

More useful comparisons

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Deye BOS-G40 Pro vs Sigenergy SigenStor BAT 8.0 system (5 modules)
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Deye BOS-G45 vs Deye BOS-G50
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Deye BOS-G45 vs Deye BOS-A (7 modules in series)
9 differences, the largest is usable energy
04

Written summary

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