FlameBlock Lithium Black is a uniquely formulated fire extinguishing agent, that was specifically developed to extinguish Lithium-Ion Battery fires. Made of a specific formulation of minerals and salts. How does it work? It does the following to a Lithium-Ion Battery: - Extinguish the fire - Bring the temperature down to 80 degrees Celsius - Keeps on cooling the battery - Interferes with the chemical reaction of the battery - Cover the battery to prevent gasses from escaping - Discharge the battery to prevent re-ignition later Note: - This product is suitable for camping trailers and caravans, with 12V and 24V Lithium battery packs - This sachet is placed on top of the battery (recommended one sachet per 100Ah) gets secured in place on the battery. - In the event of thermal runaway, the the plastic of the bag is calibrated to rupture at 100 degrees Celsius, and the gel will be released over the battery. What's in the box