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BC197DE vs BOS-B (15 modules in series; system config shown) 4 of 14 identical Swap Change batteries

KSTAR BC197DE vs Deye BOS-B (15 modules in series; system config shown)

KSTAR BC197DE
BC197DE
177.3 kWh LFP HV
Open battery page Datasheet PDF
VS
BOS-B (15 modules in series; system config shown)
193.05 kWh 90.0 % round-trip LFP HV
Open battery page Datasheet PDF
The verdict

BOS-B (15 modules in series; system config shown) leads on the differences that matter

The largest is usable energy: 15.75 kWh apart. 4 of 14 comparable parameters are identical, with 19 more left out because at least one datasheet does not publish them.

See all 10 differences
How alike are they
4 of 14 comparable
parameters are identical
identical differs not published
01

What actually differs

10 of 14 parameters
Parameter BC197DE BOS-B (15 modules in series; system config shown) Difference
Usable energy 177.30 kWh 193.05 kWh 15.75 kWh apart
Nominal energy 197.00 kWh 214.50 kWh 17.50 kWh apart
Nominal voltage 704 V 720 V 16 V apart
Weight 2500.0 kg 1850.0 kg 650.0 kg lighter
Weight per kWh 14.1 kg/kWh 9.6 kg/kWh 4.5 kg/kWh lighter
Min operating temperature -30 °C -20 °C 10 °C more cold tolerant
Max operating temperature 50 °C 55 °C 5 °C more heat tolerant
Inverter Built in (all-in-one) None (battery only) Built in (all-in-one) vs None (battery only)
Ingress protection IP54 (battery cabinet); IP65 (inverter) IP20 IP54 (battery cabinet); IP65 (inverter) vs IP20
Dimensions 2380x1300x1200 mm 1136x2150x800 mm 2380x1300x1200 mm vs 1136x2150x800 mm

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02

Full specification

Parameter BC197DE BOS-B (15 modules in series; system config shown) Difference
Capacity
Usable energy 177.30 kWh 193.05 kWh 15.75 kWh apart
Nominal energy 197.00 kWh 214.50 kWh 17.50 kWh apart
Depth of discharge 90 % 90 % Same
Max system capacity - 214.5 kWh Not published by KSTAR
Modules per stack - 5-15 Not published by KSTAR
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 - 90.0 % Not published by KSTAR
Cycle life - 6000 cycles Not published by KSTAR
Cycle test depth - 90 % Not published by KSTAR
Capacity at end of life - 70 % Not published by KSTAR
Self-discharge - - Neither datasheet publishes this
Electrical
Voltage class High voltage High voltage Same
Nominal voltage 704 V 720 V 16 V apart
Operating voltage 616-792 V - Not published by Deye
Cell chemistry LFP LFP Same
Active cell balancing - Yes Not published by KSTAR
Thermal management Yes Yes Same
Built-in inverter
Inverter Built in (all-in-one) None (battery only) Built in (all-in-one) vs None (battery only)
Inverter power 50.0 kW - Not published by Deye
Grid connection 3-phase - Not published by Deye
Backup power 50.0 kW - Not published by Deye
Physical
Weight 2500.0 kg 1850.0 kg -650.0 kg for BOS-B (15 modules in series; system config shown)
Weight per kWh 14.1 kg/kWh 9.6 kg/kWh -4.5 kg/kWh for BOS-B (15 modules in series; system config shown)
Dimensions 2380x1300x1200 mm 1136x2150x800 mm 2380x1300x1200 mm vs 1136x2150x800 mm
Ingress protection IP54 (battery cabinet); IP65 (inverter) IP20 IP54 (battery cabinet); IP65 (inverter) vs IP20
Outdoor-rated Yes - Not published by Deye
Min operating temperature -30 °C -20 °C -10 °C for BC197DE
Max operating temperature 50 °C 55 °C +5 °C for BOS-B (15 modules in series; system config shown)
Warranty
Warranty - 10 yrs Not published by KSTAR
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.