Power Pro · All-in-one
The entire battery system in one cabinet.
LFP cells, power conversion, BMS, EMS, air conditioning and fire suppression integrated and tested in one outdoor cabinet. From 112 to 522 kWh and from 50 to 250 kW.
1,000 × 1,350 × 2,300 mm · BK241 · BK261
1,900 × 1,350 × 2,300 mm · BK522
- 112–522kWh
- Energy per cabinet
- 50–250kW
- Rated AC power
- 8,000cycles
- Service life
- IP54–55
- Outdoor installation
Five models
400 Vac three-phase
0.5P, 25 ± 2 °C, down to 70% SOH
Up to 55 °C ambient and 2,000 m
The range
Five sizes, one architecture.
The hybrid BK112H, with PV input and island mode, for medium loads and off-grid systems. From BK241 to BK522 with liquid cooling for industry and EV charging. All run at 0.5P: around two hours of autonomy at rated power.
A single connection
400 V three-phase AC output with neutral. No shelter, container or integration works needed: it connects to the switchboard and is configured.
Modular growth
The modular architecture lets you match capacity and power to the project and expand later with more units in parallel.
Operator-ready
RS485, Ethernet and CAN depending on model. Integrates with SCADA, PPC and our EMS without third-party gateways.
Energy per model
On site and in the factory
Power Pro in operation, not in a catalogue.
Real installations in industry and off-grid systems, and units on the integration line before shipping to site.
BK integration
What goes inside a Power Pro
We don't resell boxes. We select every component, integrate it, test it and commission it with our own EMS. A single point of responsibility for the complete system.
- Integrated
- In the project
- Optional
- 01Integrated
314 Ah LFP cells
Lithium iron phosphate chemistry: cobalt-free, thermally stable and rated for 8,000 cycles down to 70% state of health (0.5P, 25 ± 2 °C).
- 02Integrated
BMS and BMU
Monitors the voltage and temperature of every cell, balances the system and trips on any deviation.
- 03Integrated
Bidirectional PCS
400 Vac three-phase, power factor adjustable from −1 to +1, THDi ≤ 3% and 100% unbalanced load. PCS with up to 98% efficiency. On the BK112H, hybrid inverter with PV input and island mode in under 20 ms.
- 04Integrated
Liquid or air cooling
Closed-loop liquid cooling (BK241–BK522) or forced ventilation (BK112H).
- 05Integrated
Detection and suppression
Detection integrated into the BMS and aerosol fire suppression on all models.
- 06Integrated
BK EMS
Self-consumption, peak shaving, arbitrage and backup with demand forecasting. 24/7 monitoring and predictive maintenance.
- 07Integrated
Communications
RS485 and Ethernet on all models; CAN on BK112H, BK289 and BK522; Modbus TCP on the BK289.
Models and datasheets
Choose the size. Get the full datasheet.
Select a model to see its key figures; the table highlights its column. Data from the BK Energies technical catalogue.
Air coolingBK112H
Published datasheet- 112kWh
- Rated energy
- 50kW
- AC power
- 100kW
- Max. PV input
- <20ms
- Switchover to island
Air-cooled hybrid: inverter with direct PV input (2 MPPT) and switchover to island mode in under 20 ms.
- IEC 62933
- IEC 62477
- IEC 62619
- IEC 63056
- IEC 61000
- UN 38.3
Liquid coolingBK241
Published datasheet- 241kWh
- Rated energy
- 125kW
- Rated power
- 137.5kW
- Maximum AC power
Compact 1 × 1.35 m footprint: around two hours of autonomy at rated power.
- GB/T 34120
- GB/T 36276
- IEC 62477
- IEC 62619
- IEC 61000
Liquid coolingBK261
Published datasheet- 261kWh
- Rated energy
- 125kW
- Rated power
- 314Ah
- LFP cell
Same enclosure as the BK241, with more energy.
- GB/T 34120
- GB/T 36276
- IEC 62477
- IEC 62619
- IEC 61000
- UN 38.3
Liquid coolingBK289
Published datasheet- 289kWh
- Rated energy
- 125kW
- Rated power
- 150kW
- Overload 60 s
The most energy in the 125 kW format: 289 kWh at 921.6 V.
- IEC 62619
- IEC 60730-1
- IEC 63056
- IEC 61000
- IEC 60529
- IEC 62040
- IEC 62477
- UN 38.3
Liquid coolingBK522
Published datasheet- 522kWh
- Rated energy
- 250kW
- Rated power
- 360A
- Rated current
The most powerful Power Pro: the equivalent of two 261 kWh units in a single cabinet.
- IEC 62933
- IEC 62477
- IEC 62619
- IEC 63056
- IEC 61000
- UN 38.3
Full datasheet · Power Pro All-in-One
Scroll the table sideways if you can't see every model
| Parameter | BK112H | BK241 | BK261 | BK289 | BK522 |
|---|---|---|---|---|---|
| Battery | |||||
| Cell | LFP 3.2 V · 314 Ah | LFP 3.2 V · 314 Ah | LFP 3.2 V · 314 Ah | LFP 3.2 V · 314 Ah | LFP 3.2 V · 314 Ah |
| Configuration | 1P112S | 1P240S | 1P260S | — | 2P260S |
| Rated energy | 112.53 kWh | 241 kWh | 261 kWh | 289 kWh | 522.5 kWh (25 °C, 0.5P) |
| DC range / rated voltage | 302.4–403.2 V / 358.4 V | 648–864 V | 702–936 V / 832 V | 720–1,000 V / 921.6 V | 702–936 V / 832 V |
| Service life | 8,000 cycles (0.5P, 25 ± 2 °C, 70% SOH) | 8,000 cycles (0.5P, 25 ± 2 °C, 70% SOH) | 8,000 cycles (0.5P, 25 ± 2 °C, 70% SOH) | ≥ 8,000 cycles (70% capacity) · 0.5P | 8,000 cycles (0.5P, 25 ± 2 °C, 70% SOH) |
| PV input | |||||
| Max. PV input power | 100 kW | — | — | — | — |
| Max. voltage · MPPT range / rated | 1,000 V · 180–850 V / 600 V | — | — | — | — |
| Start-up · number of MPPTs | 200 V · 2 | — | — | — | — |
| Max. input / short-circuit current | 6 × 45 A / 6 × 55 A | — | — | — | — |
| AC side | |||||
| Rated power | 50 kW | 125 kW | 125 kW | 125 kW | 250 kW |
| Maximum power / overload | — | 137.5 kW | 137.5 kW | 1.2 Pn for 1 min | 1.1× continuous · 1.2× for 1 min |
| Rated voltage | 400 V (340–436 V) · 3P+N+PE | 400 Vac · 340–440 V (−15% … +10%) | 400 Vac · 340–440 V (−15% … +10%) | 400 Vac · 300–460 V | 400 V (−15% … +15%) · 3P+N+PE |
| Current | 79.8 A max. output | 182 A rated | 182 A rated | 182 A rated | 360 A rated |
| Frequency | 50/60 Hz (45–55 / 55–65 Hz) | 50/60 Hz ± 2.5 Hz | 50/60 Hz ± 2.5 Hz | 50/60 Hz | 50/60 Hz (45–55 / 55–65 Hz) |
| Power factor · THDi | — | −1 … +1 · ≤ 3 % | −1 … +1 · ≤ 3 % | −1 … +1 · ≤ 3 % | −1 … +1 · ≤ 3 % |
| Isolated output (THDu) · unbalanced load | — | < 3% with linear load · 100% | < 3% with linear load · 100% | < 3% with linear load · 100% | < 3% with linear load · 100% |
| Island mode | Yes · switchover < 20 ms | — | — | — | — |
| System | |||||
| Efficiency | > 86% system | > 88% system · PCS 98% max. | > 88% system · PCS 98% max. | > 89% max. | ≥ 88% system |
| Cooling | Air | Liquid | Liquid | Liquid | Liquid |
| Fire suppression | Aerosol | Aerosol | Aerosol | Aerosol | Aerosol |
| Communication | RS485 · Ethernet · CAN | RS485 · Ethernet | RS485 · Ethernet | RS485 · CAN · Modbus TCP | Ethernet · CAN · RS485 |
| Noise | — | < 75 dB | < 75 dB | < 75 dB | < 75 dB |
| Environment | |||||
| Ingress protection rating | — | IP54 (IP67 pack) | IP54 (IP67 pack) | IP55 | IP55 |
| Ambient temperature | −20…55 °C | −30…55 °C | −30…55 °C | −30…55 °C (derates above 45 °C) | −30…55 °C |
| Humidity / max. altitude | ≤ 95% RH non-condensing · 2,000 m | ≤ 95% RH non-condensing · 2,000 m | ≤ 95% RH non-condensing · 2,000 m | 0–95% non-condensing · — | ≤ 95% RH non-condensing · 2,000 m |
| Mechanical | |||||
| Dimensions | 1,355 × 1,300 × 2,300 mm | 1,000 × 1,350 × 2,300 mm | 1,000 × 1,350 × 2,300 mm | 1,588 × 1,380 × 2,450 mm | 1,900 × 1,350 × 2,300 mm |
| Weight | 1,500 kg | 2,450 kg | 2,670 kg | 3,050 kg | 5,340 kg |
Indicative parameters, subject to final factory design and configuration (catalogue, pp. 12–16). Certifications per model in each datasheet. "—": figure not published in the datasheet.
Applications
Where a Power Pro works
A cabinet that arrives integrated and tested. It fits where the site and the space dictate.
Industry and C&I
Shaves power peaks and shifts consumption to P6. With PV, it stores the midday surplus.
E-mobility
A buffer for DC chargers: the battery delivers the peak and the grid connection only sees the average.
Uninterrupted backup (STS)
Keeps critical loads running when the grid fails, combined with static transfer.
Off-grid systems
Island mode with switchover in under 20 ms for farms, pumping stations and construction sites.
Agriculture and irrigation
Pumping and industrial refrigeration powered by the previous day's sun.
PV + BESS hybridisation
Several Power Pro units in parallel for small PV plants that want to sell in peak-price hours.
Safety and certifications
Detect, isolate, suppress.
Safety starts with LFP chemistry and continues through every layer of the cabinet. Four barriers before a fault can leave the cell.
- 01
LFP chemistry
Lithium iron phosphate contains no cobalt and is one of the most thermally stable chemistries.
- 02
Early detection
Combustible gas, smoke and temperature sensors connected to the BMS and EMS.
- 03
Aerosol fire suppression
Aerosol fire suppression system integrated into the cabinet, on all models.
- 04
Sealed pack
IP67 packs inside an IP54 or IP55 cabinet, depending on model, for outdoor installation.
Standards declared in the datasheet
IEC 62619
Industrial lithium battery safety
IEC 62477
Safety of power converters
IEC 62933
Grid-connected energy storage systems
IEC 63056
Safety of lithium batteries for energy storage
IEC 61000
Electromagnetic compatibility
UN 38.3
Transport of lithium batteries
Standards declared in the Power Pro datasheets (catalogue, pp. 12–16); each model has its own list in the datasheet above.
Which Power Pro does your installation need?
Send us your load curve or your bill and we will tell you the model, the power and the expected savings.