200kWh-Class Low-Voltage Grid Batteries Reach the 'Small-Quantity Dangerous Goods' Threshold! Correcting the Misconception That 'Low Voltage Means Safe'
BESS NEWS published an article clarifying fire regulations for low-voltage grid batteries. It points out that even low-voltage 200kWh-class BESS can be classified as small-quantity dangerous goods depending on electrolyte volume, urging caution in installation practices.
📋 Article Processing Timeline
- 📰 Published: April 9, 2026 at 20:00
- 🔍 Collected: April 9, 2026 at 11:30
- 🤖 AI Analyzed: April 20, 2026 at 09:51 (262h 20m after Collected)
'BESS NEWS' (operated by WATT-TUNE Inc.), a specialized news site providing critical information on grid-scale battery energy storage systems (BESS) for free, has newly published an explanatory article titled 'Can Even Low-Voltage BESS Become Small-Quantity Dangerous Goods? ~ Fire Service Act Criteria Depend on Electrolyte Classification and Quantity, Not Voltage ~'. This article clearly outlines the often-overlooked issues regarding 200kWh-class low-voltage grid batteries from the perspectives of Fire Service Act regulations and installation practices.
For low-voltage grid batteries, there is a prevailing misconception that 'because it is low voltage, fire safety compliance is relatively light' or 'even 200kWh-class systems can be installed without issues.' However, in practice, the classification of batteries under the Fire Service Act is not simply determined by whether they are 'low voltage.' The critical deciding factors are the classification and total volume of the electrolyte.
Under fire regulations, the electrolyte used in lithium-ion batteries is generally classified as dangerous goods. For Class 4, Petroleums No. 2, the issue is whether it falls under small-quantity dangerous goods based on the designated quantities. In other words, while it cannot be definitively stated that all 200kWh-class batteries are small-quantity dangerous goods, this capacity range is highly likely to cross the small-quantity dangerous goods threshold depending on the electrolyte type and total volume, creating a practical pitfall.
Furthermore, the issue extends beyond whether a notification is required. In fire safety practice, in addition to being classified as dangerous goods, requirements such as retaining open spaces, zoning, and prior consultations with the local fire department can become problematic. Especially in existing buildings, stores, factories, and small business facilities, these conditions can dictate the very feasibility of installation. The larger the capacity, the more the flexibility of placement and acceptability may change. The 200kWh class is exactly one of those capacity ranges that frequently clashes with these on-site realities.
Additionally, classification as dangerous goods is not the same as classification as high-voltage or extra-high-voltage equipment. Even in battery-related materials published by local governments, battery facilities containing dangerous goods and high-voltage/extra-high-voltage substation facilities are categorized separately. Therefore, relying on understandings like 'it's not dangerous goods because it's low voltage' or 'fire safety compliance is not strict if it's not high voltage' can lead to significant practical risks.
For low-voltage grid batteries, there is a prevailing misconception that 'because it is low voltage, fire safety compliance is relatively light' or 'even 200kWh-class systems can be installed without issues.' However, in practice, the classification of batteries under the Fire Service Act is not simply determined by whether they are 'low voltage.' The critical deciding factors are the classification and total volume of the electrolyte.
Under fire regulations, the electrolyte used in lithium-ion batteries is generally classified as dangerous goods. For Class 4, Petroleums No. 2, the issue is whether it falls under small-quantity dangerous goods based on the designated quantities. In other words, while it cannot be definitively stated that all 200kWh-class batteries are small-quantity dangerous goods, this capacity range is highly likely to cross the small-quantity dangerous goods threshold depending on the electrolyte type and total volume, creating a practical pitfall.
Furthermore, the issue extends beyond whether a notification is required. In fire safety practice, in addition to being classified as dangerous goods, requirements such as retaining open spaces, zoning, and prior consultations with the local fire department can become problematic. Especially in existing buildings, stores, factories, and small business facilities, these conditions can dictate the very feasibility of installation. The larger the capacity, the more the flexibility of placement and acceptability may change. The 200kWh class is exactly one of those capacity ranges that frequently clashes with these on-site realities.
Additionally, classification as dangerous goods is not the same as classification as high-voltage or extra-high-voltage equipment. Even in battery-related materials published by local governments, battery facilities containing dangerous goods and high-voltage/extra-high-voltage substation facilities are categorized separately. Therefore, relying on understandings like 'it's not dangerous goods because it's low voltage' or 'fire safety compliance is not strict if it's not high voltage' can lead to significant practical risks.