Containerised battery energy storage systems
Overview
A containerised storage system is a complete power block inside a 20-foot container: battery modules, cooling, fire suppression and controls are assembled and tested at the factory. What arrives on site is a finished product that only has to be connected.
It is used wherever the scale is measured in megawatt-hours: beside a solar plant, on the grounds of a plant with a heavy peak load, or as part of a microgrid.
What it addresses:
- peak tariffs — charging during the cheap hours, discharging at the peak;
- backup during outages, with no pause to start;
- extra capacity without increasing the contracted supply;
- working with a solar plant — surplus generation is stored rather than curtailed by the inverter.
Models and specifications
All figures are as stated by the manufacturer.
Turtle 5 MWh — 20-foot container, liquid cooling
| Parameter | Value |
|---|---|
| Capacity | 5.016 MWh |
| Charge / discharge power | 2.5 MW |
| DC voltage | 1331.2 V (range 1164.8–1497.6 V) |
| Battery | 314 Ah cells, liquid cooled |
| System efficiency | 88 % |
| Dimensions | 6058 × 2438 × 2896 mm (standard 20-foot) |
| Weight | up to 43 t |
| Degree of protection | IP55 (excluding the cooling and air-conditioning compartments) |
| Operating temperature | −30 to +50 °C (derating above +45 °C) |
| Protocols | CAN, IEC 61850, IEC 104, TCP, MODBUS RTU |
| Certification | IEC 62619:2022, IEC 62477-1, EN IEC 61000-6-2/-4, EN 55011, IEC 63056, UN 38.3 |
Turtle 3.85 MWh — liquid cooling
| Parameter | Value |
|---|---|
| Capacity | 3.85 MWh |
| Power | 2 MW |
| Battery | LFP, 314 Ah cells |
| DC voltage | 1228.8 V (range 1075.2–1382.4 V) |
| Efficiency | over 89 % |
| Dimensions | 20-foot container |
| Weight | 36 t |
| Degree of protection | IP55 · noise below 75 dB at 1 m |
| Installation altitude | up to 4000 m |
| Certification | IEC 62619 / 62933 / 62477 / 63056, UL 1973, UL 9540, UL 9540A, CE, UN 38.3, TÜV, DNV, NFPA 69 |
Turtle CL2.5 — container with integrated AC/DC equipment
Supplied in three capacity configurations — for the energy reserve you need at the same power rating.
| Parameter | Value |
|---|---|
| Capacity (three configurations) | 2.507 / 2.089 / 1.67 MWh |
| AC power | 1000 kW |
| Battery | LFP, 314 Ah cells (6P416S / 5P416S / 4P416S) |
| DC voltage | 1164.8–1497.6 V |
| Dimensions | 6058 × 2438 × 2896 mm (20-foot) |
| Weight | 27.5 / 25 / 22.5 t by configuration |
| Degree of protection | IP54 (battery compartment) · corrosion class C4H |
| Operating temperature | −25 to +55 °C |
| Fire suppression | aerosol, smoke and temperature detectors, explosion-proof ventilation |
Official dealership
LK Energy is an official dealer of Wincle Energy Pte. Ltd. (Singapore), the W ENERGY brand. The certificate runs from January 2026 to January 2027.
This equipment is already running on one of our sites
W ENERGY containerised storage systems totalling 20.064 MWh were installed as part of a 4.95 MW industrial solar plant on which LK Energy was the EPC contractor — from design through to commissioning. We service those same systems.
→ Case: 4.95 MW solar plant with 20.064 MWh of storage
See also
- Section: Battery energy storage systems
- Servicing: BESS servicing
- Related cards: Industrial cabinets · Hybrid · Mobile
- Case: 4.95 MW solar plant with 20.064 MWh of storage
What our own work covers
We supply the equipment as an official dealer. Our own part is everything around it:
- The switchgear. The container has to be brought into the switchgear: switching, protection, metering and reconciliation with the site's existing scheme. That switchgear is designed and built by our plant in Odesa — not subcontracted.
- Installation and commissioning — receiving the container by crane onto a prepared pad, connecting it, putting it into service.
- Servicing — scheduled maintenance, BMS checks, battery diagnostics: BESS servicing.
FAQ
What kind of pad does the container need?
A prepared base for the weight of the unit — between 22.5 and 43 t depending on the model — and access for a crane. All three models are standard 20-foot containers, so transport is routine.
Does the container work outdoors all year?
Yes, it is built for outdoor installation: IP54 to IP55 depending on the model, with its own cooling and heating, and an operating range of −30 to +50 °C on the Turtle 5 MWh and −25 to +55 °C on the CL2.5.
How is the container connected to the site?
It depends on the scheme: at low voltage through 0.4 kV switchgear, or at medium voltage through its own transformer substation. We determine the arrangement from your single-line diagram — and that part we design and build ourselves.
How long will the system last?
Life depends on depth of discharge and the temperature regime. For models where the manufacturer states a cycle life, we quote it in the proposal together with the manufacturer's documentation.
Can several containers be installed?
Yes, the systems scale — that is exactly how tens of megawatt-hours are assembled on large sites. We calculate the number of units and the connection arrangement for the power and energy required.
Price request:
Containerised battery energy storage systems
Send us your single-line diagram or specification — we will estimate the configuration, lead time and price. Preliminary estimate within 24 business hours.
+380 67 104 94 91