---
title: "Deye BOS-B (15 modules in series; system config shown) vs KSTAR BC197DE - Battery Comparison | ComparePV"
description: "Compare Deye BOS-B (15 modules in series; system config shown) vs KSTAR BC197DE side by side: usable energy, round-trip efficiency, power, cycle life and the full specification."
source: "https://comparepv.com/compare-batteries/deye-bos-b-15-modules-in-series-system-config-shown/kstar-battery-cabinets-cells-by-catl-bc197de"
updated: 2026-01-11
---

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

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.


## The two batteries


| Attribute | A | B |
| --- | --- | --- |
| Battery | [Deye BOS-B (15 modules in series; system config shown)](https://comparepv.com/battery/deye-bos-b-15-modules-in-series-system-config-shown) | [KSTAR BC197DE](https://comparepv.com/battery/kstar-battery-cabinets-cells-by-catl-bc197de) |
| Manufacturer | Deye | KSTAR |
| Usable energy | 193.05 kWh | 177.3 kWh |
| Cells and voltage | LFP HV | LFP HV |

[See 44 Deye offers](https://comparepv.com/offers?manufacturer=deye&product_type=battery)


## Where they differ

Ranked by how much the difference matters, not by datasheet order.


| 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 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) |
| 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) |
| 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 |


## Every compared parameter


| Parameter | BOS-B (15 modules in series; system config shown) | BC197DE |
| --- | --- | --- |
| Usable energy | 193.05 kWh | 177.30 kWh |
| Nominal energy | 214.50 kWh | 197.00 kWh |
| Depth of discharge | 90 % | 90 % |
| Max system capacity | 214.5 kWh | - |
| Modules per stack | 5-15 | - |
| Continuous discharge power | - | - |
| Continuous charge power | - | - |
| Peak discharge power | - | - |
| Power per kWh | - | - |
| Round-trip efficiency | 90.0 % | - |
| Cycle life | 6000 cycles | - |
| Cycle test depth | 90 % | - |
| Capacity at end of life | 70 % | - |
| Self-discharge | - | - |
| Voltage class | High voltage | High voltage |
| Nominal voltage | 720 V | 704 V |
| Operating voltage | - | 616-792 V |
| Cell chemistry | LFP | LFP |
| Active cell balancing | Yes | - |
| Thermal management | Yes | Yes |
| Inverter | None (battery only) | Built in (all-in-one) |
| Inverter power | - | 50.0 kW |
| Grid connection | - | 3-phase |
| Backup power | - | 50.0 kW |
| Weight | 1850.0 kg | 2500.0 kg |
| Weight per kWh | 9.6 kg/kWh | 14.1 kg/kWh |
| Dimensions | 1136x2150x800 mm | 2380x1300x1200 mm |
| Ingress protection | IP20 | IP54 (battery cabinet); IP65 (inverter) |
| Outdoor-rated | - | Yes |
| Min operating temperature | -20 °C | -30 °C |
| Max operating temperature | 55 °C | 50 °C |
| Warranty | 10 yrs | - |
| Warranted throughput | - | - |


## Related comparisons

- [Deye BOS-B (15 modules in series; system config shown) vs Huawei LUNA2000-200KWH-2H1](https://comparepv.com/compare-batteries/deye-bos-b-15-modules-in-series-system-config-shown/huawei-luna2000-200kwh-2h1) - 9 differences, the largest is usable energy
- [Deye BOS-B (15 modules in series; system config shown) vs Huawei LUNA2000-161KWH-2H1](https://comparepv.com/compare-batteries/deye-bos-b-15-modules-in-series-system-config-shown/huawei-luna2000-161kwh-2h1) - 9 differences, the largest is usable energy
- [Deye BOS-B (15 modules in series; system config shown) vs Deye BOS-A (23 modules in series)](https://comparepv.com/compare-batteries/deye-bos-b-15-modules-in-series-system-config-shown/bos-a-23-modules-in-series) - 8 differences, the largest is usable energy


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Source: https://comparepv.com/compare-batteries/deye-bos-b-15-modules-in-series-system-config-shown/kstar-battery-cabinets-cells-by-catl-bc197de

Not in this file, on the page: a written summary generated on request.