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

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

BOS-B (15 modules in series; system config shown)
193.05 kWh 90.0 % round-trip LFP HV
Open battery page Datasheet PDF
VS
KSTAR BC197DE
BC197DE
177.3 kWh 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 BOS-B (15 modules in series; system config shown) BC197DE Difference
Usable energy 193.05 kWh 177.30 kWh 15.75 kWh apart
Nominal energy 214.50 kWh 197.00 kWh 17.50 kWh apart
Nominal voltage 720 V 704 V 16 V apart
Weight 1850.0 kg 2500.0 kg 650.0 kg lighter
Weight per kWh 9.6 kg/kWh 14.1 kg/kWh 4.5 kg/kWh lighter
Min operating temperature -20 °C -30 °C 10 °C more cold tolerant
Max operating temperature 55 °C 50 °C 5 °C more heat tolerant
Inverter None (battery only) Built in (all-in-one) None (battery only) vs Built in (all-in-one)
Ingress protection IP20 IP54 (battery cabinet); IP65 (inverter) IP20 vs IP54 (battery cabinet); IP65 (inverter)
Dimensions 1136x2150x800 mm 2380x1300x1200 mm 1136x2150x800 mm vs 2380x1300x1200 mm

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02

Full specification

Parameter BOS-B (15 modules in series; system config shown) BC197DE Difference
Capacity
Usable energy 193.05 kWh 177.30 kWh 15.75 kWh apart
Nominal energy 214.50 kWh 197.00 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 720 V 704 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 None (battery only) Built in (all-in-one) None (battery only) vs Built in (all-in-one)
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 1850.0 kg 2500.0 kg -650.0 kg for BOS-B (15 modules in series; system config shown)
Weight per kWh 9.6 kg/kWh 14.1 kg/kWh -4.5 kg/kWh for BOS-B (15 modules in series; system config shown)
Dimensions 1136x2150x800 mm 2380x1300x1200 mm 1136x2150x800 mm vs 2380x1300x1200 mm
Ingress protection IP20 IP54 (battery cabinet); IP65 (inverter) IP20 vs IP54 (battery cabinet); IP65 (inverter)
Outdoor-rated - Yes Not published by Deye
Min operating temperature -20 °C -30 °C -10 °C for BC197DE
Max operating temperature 55 °C 50 °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

More useful comparisons

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Deye BOS-B (15 modules in series; system config shown) vs Huawei LUNA2000-200KWH-2H1
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Deye BOS-B (15 modules in series; system config shown) vs Huawei LUNA2000-161KWH-2H1
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Deye BOS-B (15 modules in series; system config shown) vs Deye BOS-A (23 modules in series)
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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.