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8.0 system (2 modules) vs stack (2 modules) 13 of 16 identical Swap Change batteries

Sigenergy SigenStor BAT 8.0 system (2 modules) vs Sigenergy SigenStor BAT stack (2 modules)

Sigenergy SigenStor BAT 8.0 system (2 modules)
SigenStor BAT 8.0 system (2 modules)
15.6 kWh LFP
Open battery page Datasheet PDF
VS
Sigenergy SigenStor BAT stack (2 modules)
SigenStor BAT stack (2 modules)
16.12 kWh LFP
Open battery page Datasheet PDF
The verdict

stack (2 modules) leads on the differences that matter

The largest is usable energy: 0.52 kWh apart. 13 of 16 comparable parameters are identical, with 17 more left out because at least one datasheet does not publish them.

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

What actually differs

3 of 16 parameters
Parameter 8.0 system (2 modules) stack (2 modules) Difference
Usable energy 15.60 kWh 16.12 kWh 0.52 kWh apart
Inverter Built in (all-in-one) None (battery only) Built in (all-in-one) vs None (battery only)
Weight per kWh 10.5 kg/kWh 10.2 kg/kWh 0.3 kg/kWh lighter

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02

Full specification

Parameter 8.0 system (2 modules) stack (2 modules) Difference
Capacity
Usable energy 15.60 kWh 16.12 kWh 0.52 kWh apart
Nominal energy 16.12 kWh 16.12 kWh Same
Depth of discharge - - Neither datasheet publishes this
Max system capacity 48.4 kWh 48.4 kWh Same
Modules per stack 1-6 1-6 Same
Power
Continuous discharge power 8.00 kW 8.00 kW Same
Continuous charge power 8.00 kW 8.00 kW Same
Peak discharge power 12.00 kW 12.00 kW Same
Power per kWh 0.51 kW/kWh 0.50 kW/kWh Effectively the same
Efficiency and lifetime
Round-trip efficiency - - Neither datasheet publishes this
Cycle life - - Neither datasheet publishes this
Cycle test depth - - Neither datasheet publishes this
Capacity at end of life - - Neither datasheet publishes this
Self-discharge - - Neither datasheet publishes this
Electrical
Voltage class - - Neither datasheet publishes this
Nominal voltage - - Neither datasheet publishes this
Operating voltage - - Neither datasheet publishes this
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 164.0 kg 164.0 kg Same
Weight per kWh 10.5 kg/kWh 10.2 kg/kWh -0.3 kg/kWh for stack (2 modules)
Dimensions 910x850x260 mm 910x850x260 mm Same
Ingress protection IP66 IP66 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 - - Neither datasheet publishes this
Warranted throughput - - Neither datasheet publishes this
03

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Sigenergy SigenStor BAT stack (2 modules) vs BYD Battery-Box Premium HVM 16.6
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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.