EU Declaration of Conformity
Declaration Number: 20250715-003
1. Product Identification
Battery Model: Battery-Box Premium LVL 15.4
Product Category: Lithium ion batteries
2. Manufacturer and Representatives
Manufacturer: Shenzhen BYD Electronics Co., Ltd.
Address: No.1, Yan'an Road, Kuichong, Dapeng, Shenzhen, P.R. China
Authorized Representative: EFT-Systems GmbH
Address: Bruchtannenstr. 28, 63801 Kleinostheim, Germany
Importer: BYD Smart Device Hungary Kft.
Address: Prologis Park Budapest M1, Szent József út 4., 2071 Páty, Hungary
Email: bydsmart@byd.com
3. Declaration Authority
This declaration of conformity is issued under the sole responsibility of the manufacturer.
4. Subject of Declaration
Subject: Battery-Box Premium LVL 15.4
The battery system contains modules, including: cells, wiring harness, PCBA, and case.
Product Specifications:
- Dimensions (W*D*H): 650 mm*575 mm*670 mm
- Nominal Voltage: 51.2 V
- Nominal Capacity: 300 Ah
- Weight: 168 kg
- Battery Type: LiFePO4
- Voltage Range: 40-57.6V
- Max. continuous current: 250A
- Usable energy: 15.36kWh
- Operating temp.: -10°C~50°C
- Protective Class: I
- IP Class: IP20
5. Conformity with EU Legislation
The object of the declaration described in point 4 is in conformity with the relevant Union harmonisation legislation:
- (EU) 2023/1542
- 2014/53/EU
- 2011/65/EU, including its amendment (EU) 2015/863
- (EC) No 1907/2006
6. Referenced Standards
References to the relevant harmonised standards or common specifications used, or references to other technical specifications in relation to which conformity is declared:
- IEC62619
- IEC62040
- UKCA
- UN38.3
- EN 300328
- EN 301489-1
- EN 301489-17
- EN 62311
- EN61000-6
- EN62477
7. Electrochemical Performance and Durability Parameters
| Parameter | Value |
|---|---|
| Rated capacity / attenuation rate | 300 Ah / Refer to Limited warranty*1 |
| Max. continuous charge / discharge power*2 | 12.8 kW |
| Charge / discharge power decay rate | 0 |
| Initial internal resistance / increase rate | ≤ 0.8 mΩ / Increase 15% (after 10 years and 3650 cycles) |
| Initial / end cycle efficiency | 95% / 94% (after 10 years and 3650 cycles) |
| Expected life under design conditions | Refer to Limited warranty*1 |
*1. Limited warranty can be downloaded on the website: www.bydbatterybox.com/downloads
*2. Charge / Discharge power derating will occur related to Temperature and SOC.
8. Standards Applied for Safety of Stationary Battery Energy Storage Systems
| No. | Test Project | Quantity | Test Result |
|---|---|---|---|
| 1 | Thermal shock and cycling | 1 PKS | Pass |
| 2 | External short circuit protection | 1 PKS | Pass |
| 3 | Overcharge protection | 1 PKS | Pass |
| 4 | Over-discharge protection | 1 PKS | Pass |
| 5 | Over-temperature protection | 1 PKS | Pass |
| 6 | Thermal propagation protection | 1 PKS | Pass |
| 7 | Mechanical damage by external forces | 1 PKS | Pass |
| 8 | Internal short circuit | 1 PKS | Pass |
| 9 | Thermal abuse | 1 PKS | Pass |
| 10 | Fire test | 1 PKS | Pass |
| 11 | Emission of gases | 1 PKS | Pass |
9. Additional Information
Signature of Authorized Company Representative: [Signature Placeholder]
Title: Manager of Quality Department
Place of Issue: Shenzhen
Date of Issue: 2025-07-15
