---
title: 2. Subsystems
slug: 20c1600k-bess/2-subsystems
description: 20C1600K datasheet
docTags: 
createdAt: 2025-10-18T11:48:11.420Z
---

### 2.1. Lithium Iron Phosphate Battery Specifications

| Item                                | Specs                                 | Remarks                                            |
| ----------------------------------- | ------------------------------------- | -------------------------------------------------- |
| Nominal capacity                    | 314Ah                                 | 0.5P Standard discharge,25±2℃                      |
| Nominal energy                      | 1,004.8                               |                                                    |
| Nominal power                       | 502.4W                                | 0.5P                                               |
| Operation voltage                   | 2.5 3.65V<br />2.0 3.65V              | Cell temperature T>0℃Cell temperature T≤0℃         |
| Delivery capacity                   | 3%-40% SOC                            | Within 10days form factory                         |
| Delivery voltage                    | 2.9\~3.40V                            |                                                    |
| Standard charge method              | 0.5P constant power charge to 3.65V   | 25±2℃                                              |
| Standard discharge method           | 0.5P constant power discharge to 2.5V |                                                    |
| Cell internal impedance             | 0.18±0.05mΩ                           | Fresh cell, Intimal resistance measured at AC 1KHz |
| Weight                              | 5.60±0.30Kg                           |                                                    |
| Max continuous charge power         | 1P                                    | 2.5\~3.65V,25±2℃,1P=896W                           |
| Max continuous discharge power      | 1P                                    |                                                    |
| Charge 0\~60℃<br />P rate           | 0\~5℃                                 | ≤0.12P                                             |
|                                     | 5\~10℃                                | ≤0.3P                                              |
|                                     | 10\~15℃                               | ≤0.5P                                              |
|                                     | 15\~55℃                               | ≤0.5P                                              |
|                                     | 55\~60℃                               | ≤0.5P                                              |
| Discharge -20\~60℃<br />P rate      | -30\~-20℃                             | ≤0.5P                                              |
|                                     | -20\~55℃                              | ≤0.5P                                              |
|                                     | 55\~60℃                               | ≤0.5P                                              |
| Operation humidity range            | ＜70% RH                               | No condensation                                    |
| Altitude                            | ≤4000m(Pollution degree II)           | Derating when >2000m                               |
| Storage temperature for a long time | -20 25℃                               | ≤6 months                                          |
|                                     | -20 45℃                               | ≤3 months                                          |
|                                     | -20 60℃                               | ≤1 months                                          |



:::hint{type="warning"}
Must stop charging/discharging once the cell temperature exceeds operation charge/discharge temperature range
:::

:::hint{type="warning"}
Do not store the battery more than half a year. Up to half a year must be charged once. The battery with protect circuit should be charged one time when stored for three mouths.
:::



### 2.2. Battery Pack Integration

In the 20C1600K system, each battery pack contains 48 battery cells - the smallest unit in the battery system. The battery pack is standardized, easy to install and maintain, and features high energy density, consistency, reliability, and stability. The battery pack is designed with independent liquid cooling ducts inside, which provides good heat dissipation. The battery management unit (BMU), voltage sensors, and thermal sensors are also integrated in the pack to ensure the cells' stable performance.

· BMU on-board, Active balance also

· Liquid cooling

· Multi-communication

· 47.002kWh with 1p48s cell configure, output 153.6Vdc

· UL9540A tested

Battery Pack Specifications:

| No | Item                   | Specs        |
| -- | ---------------------- | ------------ |
| 1  | Battery cell QTY (pcs) | 48           |
| 2  | Cell configuration     | 1P48S        |
| 4  | BMU QTY (pcs)          | 1            |
| 5  | Rated voltage (V)      | 153.6        |
| 6  | Voltage range (V)      | 134.4\~170.4 |
| 7  | Rated Capacity (Ah)    | 314          |
| 8  | Energy (kWh)           | 48.230       |

&#x20;

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LP47 Battery Pack

### 2.3. Battery string Integration

The battery string consists of 8 battery packs connected in series and mounted on 1 battery rack. The String is designed with battery module slots, CMU, DC power distribution space, fans and air ducts.

Each battery pack is equipped with a battery monitoring unit (BMU). The 8 BMUs are connected to the battery string management system (CMU) through CANBUS. The CMU manages the battery string and control the String's DC contactor. The CMU uploads battery information and DC switch status to the dispatch control terminal via Ethernet and receives control commands from the GPC.

· Comprehensive monitoring of battery operating status

· Reliable charge and discharge

· Built-in multi-level protection

· Modular design with high scalability

· Full metal frame

· UL9540A tested

· UL1973/IEC62619 certificated

Battery string Specifications:

| No | Item                | Specs          |
| -- | ------------------- | -------------- |
| 1  | Battery pack (pcs)  | 8              |
| 2  | Pack configuration  | 1P48S          |
| 3  | BMU QTY (pcs)       | 8              |
| 4  | CMU QTY (pcs)       | 1              |
| 5  | Rated voltage (V)   | 1228.8         |
| 6  | Voltage range (V)   | 1075.2\~1363.2 |
| 7  | Rated capacity (Ah) | 314            |
| 8  | Energy (kWh)        | 385.84         |

&#x20;

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LS376-8LP47 Battery string

### 2.4. Battery System Integration

The whole battery system comprises 8 battery strings connected. Each String's DC power distribution and battery management system are also integrated inside the cabinet and are modularly designed to be easy to install and maintain. The total capacity of the battery system is 3,008kWh.

Specifications are shown as below:

| No | Item                                | Specs          |
| -- | ----------------------------------- | -------------- |
| 1  | Battery string rated capacity (kWh) | 385.8          |
| 2  | Battery string QTY (pcs)            | 8              |
| 3  | Battery pack QTY (pcs)              | 64             |
| 4  | System total capacity (kWh)         | 3086           |
| 5  | DC busbar rated voltage (V)         | 1228.8         |
| 6  | DC busbar voltage range (V)         | 1075.2\~1363.2 |

### 2.5. Power Conversion System (PCS)

The energy storage bidirectional power conversion system enables the bidirectional energy conversion between batteries and the grid AC power. Its core part is an inverter composed of power electronic components with embedded control software.

− Three-level topology, up to 99% conversion efficiency, better power quality

− Integrated cluster-level battery management function, high battery availability

− Intelligent multi-stage fan speed regulation, wide temperature operation capacity, 50 °C no derating

− Support constant power, constant current, constant voltage control, with a frequency modulation, VSG, and other functions

− Support IEC61850 protocol, with MS-level responsiveness

− IP66 protection, outdoor can be installed vertically and horizontally

::Image[]{src="https://api.archbee.com/api/optimize/-Cub6q8SIjDSydOx8r8ZR/Ss31JJyNCu3AGpNvKjwS5_eh-200-inverter.png" size="50" width="882" height="897" darkWidth="882" darkHeight="897" position="center" showCaption="false"}

EH-0200-HA-M

![](https://api.archbee.com/api/optimize/-Cub6q8SIjDSydOx8r8ZR/ihDE9ueI0_xZED4QgemNQ_eh-200-diagram.jpg)

PCS diagram

Main specifications are shown as below：

| Item                  |                              | Description                               |
| --------------------- | ---------------------------- | ----------------------------------------- |
| Battery DC side       | Max. DC voltage              | 1,500Vdc                                  |
|                       | Max. DC current              | 224.5Adc                                  |
|                       | Battery system voltage range | 1,000-1,500Vdc                            |
| Grid AC side          | Rated power                  | 200kW                                     |
|                       | Max. AC power                | 220kW                                     |
|                       | Rated grid voltage           | 690Vac, 3W+PE                             |
|                       | Grid voltage range           | 586.5\~759V(settable)                     |
|                       | Max. AC current              | 184.1Aac                                  |
|                       | Rated grid frequency         | 50/60Hz                                   |
|                       | THDi                         | \<1.5%                                    |
|                       | AC PF                        | -1\~+1                                    |
| System characteristic | Isolated                     | None                                      |
|                       | Max. efficiency              | 98.7%                                     |
|                       | IP protection                | IP66                                      |
|                       | Operation temperature        | -40\~+60℃                                 |
|                       | Allowable humidity range     | 0\~100% (no condensation)                 |
|                       | Maximum operating altitude   | 4,000m                                    |
|                       | Cooling                      | Temperature controlled forced air cooling |
|                       | Communication Interface      | RS485/CAN/Ethernet                        |
|                       | Dimension（WxDxH）             | 810×275×845mm                             |
|                       | Weight                       | 100kg                                     |