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SigenStor BAT 8.0 system (5 modules) vs BOS-G40 Pro 3 of 16 identical Swap Change batteries

Sigenergy SigenStor BAT 8.0 system (5 modules) vs Deye BOS-G40 Pro

Sigenergy SigenStor BAT 8.0 system (5 modules)
SigenStor BAT 8.0 system (5 modules)
39 kWh LFP
Open battery page Datasheet PDF
VS
Deye BOS-G40 Pro
BOS-G40 Pro
36.86 kWh LFP HV
Open battery page Datasheet PDF
The verdict

BOS-G40 Pro leads on the differences that matter

The largest is usable energy: 2.14 kWh apart. 3 of 16 comparable parameters are identical, with 17 more left out because at least one datasheet does not publish them.

See all 13 differences
How alike are they
3 of 16 comparable
parameters are identical
identical differs not published
01

What actually differs

13 of 16 parameters
Parameter SigenStor BAT 8.0 system (5 modules) BOS-G40 Pro Difference
Usable energy 39.00 kWh 36.86 kWh 2.14 kWh apart
Continuous discharge power 20.00 kW 40.96 kW 20.96 kW more power
Max system capacity 48.4 kWh 81.9 kWh 33.6 kWh more room to expand
Nominal energy 40.30 kWh 40.96 kWh 0.66 kWh apart
Continuous charge power 20.00 kW 40.96 kW 20.96 kW faster charging
Peak discharge power 30.00 kW 51.20 kW 21.20 kW more surge
Power per kWh 0.51 kW/kWh 1.11 kW/kWh 0.60 kW/kWh more power for its size
Weight 383.0 kg 428.0 kg 45.0 kg lighter
Weight per kWh 9.8 kg/kWh 11.6 kg/kWh 1.8 kg/kWh lighter
Inverter Built in (all-in-one) None (battery only) Built in (all-in-one) vs None (battery only)
Ingress protection IP66 IP20 (battery enclosure) IP66 vs IP20 (battery enclosure)
Modules per stack 1-6 5-16 1-6 vs 5-16
Dimensions 1720x850x260 mm 1629x530x602 mm 1720x850x260 mm vs 1629x530x602 mm

Shop prices by brand: See 15 Sigenergy offers · See 44 Deye offers

02

Full specification

Parameter SigenStor BAT 8.0 system (5 modules) BOS-G40 Pro Difference
Capacity
Usable energy 39.00 kWh 36.86 kWh 2.14 kWh apart
Nominal energy 40.30 kWh 40.96 kWh 0.66 kWh apart
Depth of discharge - 90 % Not published by Sigenergy
Max system capacity 48.4 kWh 81.9 kWh +33.6 kWh for BOS-G40 Pro
Modules per stack 1-6 5-16 1-6 vs 5-16
Power
Continuous discharge power 20.00 kW 40.96 kW +20.96 kW for BOS-G40 Pro
Continuous charge power 20.00 kW 40.96 kW +20.96 kW for BOS-G40 Pro
Peak discharge power 30.00 kW 51.20 kW +21.20 kW for BOS-G40 Pro
Power per kWh 0.51 kW/kWh 1.11 kW/kWh +0.60 kW/kWh for BOS-G40 Pro
Efficiency and lifetime
Round-trip efficiency - - Neither datasheet publishes this
Cycle life - 6000 cycles Not published by Sigenergy
Cycle test depth - 90 % Not published by Sigenergy
Capacity at end of life - 70 % Not published by Sigenergy
Self-discharge - - Neither datasheet publishes this
Electrical
Voltage class - High voltage Not published by Sigenergy
Nominal voltage - 410 V Not published by Sigenergy
Operating voltage - 352-467.2 V Not published by Sigenergy
Cell chemistry LFP LFP Same
Active cell balancing - - Neither datasheet publishes this
Thermal management - - Neither datasheet publishes this
Built-in inverter
Inverter Built in (all-in-one) None (battery only) Built in (all-in-one) vs None (battery only)
Inverter power - - Neither datasheet publishes this
Grid connection - - Neither datasheet publishes this
Backup power - - Neither datasheet publishes this
Physical
Weight 383.0 kg 428.0 kg -45.0 kg for SigenStor BAT 8.0 system (5 modules)
Weight per kWh 9.8 kg/kWh 11.6 kg/kWh -1.8 kg/kWh for SigenStor BAT 8.0 system (5 modules)
Dimensions 1720x850x260 mm 1629x530x602 mm 1720x850x260 mm vs 1629x530x602 mm
Ingress protection IP66 IP20 (battery enclosure) IP66 vs IP20 (battery enclosure)
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 Not published by Sigenergy
Warranted throughput - - Neither datasheet publishes this
03

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Sigenergy SigenStor BAT 8.0 system (5 modules) vs Sigenergy SigenStor BAT stack (5 modules)
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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.