FireBlock Lithium – Lithium-Ion Battery Firefighting Gel
FireBlock Lithium is a specialised, ready-to-use water-based firefighting gel developed specifically for lithium-ion battery fires, regardless of cell type or chemical composition. Its formulation combines rapid flame knockdown with a strong cooling effect, helping remove heat from the battery and control the conditions associated with thermal runaway.
Unlike conventional firefighting agents, FireBlock Lithium is designed to penetrate and coat the affected area, creating a protective barrier between adjacent battery cells. According to the manufacturer, this helps limit thermal propagation through the battery pack while insulating cells to reduce the risk of reignition. The technical data states that the gel can reduce temperatures from above 400°C to below 60°C during application.
With less than 10% runoff when applied to a flat surface, FireBlock Lithium also helps minimise the volume of contaminated firefighting runoff. The formulation is described as non-toxic and biodegradable and has undergone environmental testing to ISO 14855-1 and OECD 208.
Key Features
- Specifically developed for lithium-ion battery fires
- Suitable regardless of cell type or chemical composition
- Powerful flame knockdown and cooling action
- Designed to help stop thermal propagation between adjacent cells
- Insulates affected cells to help prevent reignition
- Less than 10% runoff on a flat surface
- Non-toxic and biodegradable
- Ready-to-use formulation – no dilution required
- Suitable for portable extinguishers and compatible firefighting systems
FireBlock Lithium can be used in portable fire extinguishers for lithium-ion battery fires and may also be used with fire engines fitted with positive-displacement pumps. The technical sheet states that the portable extinguishers are EN3 and SANS 1910 approved.
Technical Specifications
| Product | FireBlock Lithium |
| Product Type | Lithium-Ion Battery Firefighting Gel |
| Appearance | Green Water-Based Viscous Gel |
| Odour | Odourless |
| Specific Gravity at 20°C | 1.000 – 1.025 |
| pH at 20°C | 6.5 – 7.5 |
| Operating Temperature | 5°C – 50°C |
| Freezing Point | 0°C |
| Solubility | Miscible in Water |
| Runoff | Less than 10% on a Flat Surface |
| Application | Lithium-Ion Battery Fires |
| Environmental Testing | ISO 14855-1 • OECD 208 |
| Portable Extinguisher Approval | EN3 • SANS 1910 |
| Formulation | Non-Toxic • Biodegradable • Ready to Use |
| Warranty | 5 Years* |
*Subject to proper handling and storage in the original closed packaging. Product must be used as supplied and must not be diluted with water or other chemicals.
