【GOPPA LLC】Compatible with storing multiple mobile batteries, heat resistant to 800°C, 5-layer structure "Mobile Battery Fire-Resistant Case Large" available for general sale on Amazon from May 16, 2026
GOPPA LLC is launching a large "Fire-Resistant Case" for mobile batteries. With a 5-layer structure heat-resistant to 800°C, it can also store batteries compatible with wireless charging. Sales start on Amazon from May 16, 2026.
📋 Article Processing Timeline
- 📰 Published: May 16, 2026 at 19:00
- 🔍 Collected: May 16, 2026 at 10:31
- 🤖 AI Analyzed: May 16, 2026 at 11:08 (36 min after Collected)
GOPPA LLC (Location: Chuo-ku, Tokyo; Representative: Takanori Kuki) will begin general sales on Amazon from May 16, 2026, of the "Mobile Battery Fire-Resistant (Flame Retardant) Case Large (Model: EG-FR21S)," a new model in the "Fire-Resistant Case for Mobile Battery" series based on the concept of "everyday carry disaster prevention." This case is compatible with storing wireless charging standard mobile batteries, is heat resistant to 800°C, and has a 5-layer structure to suppress the spread of flames and heat.
Mobile Battery Fire-Resistant (Flame Retardant) Case Large (EG-FR21S)
■ Development Background
Products equipped with lithium-ion batteries require caution as they can lead to smoke and fire due to defects or deterioration. According to information released by the Tokyo Fire Department, "mobile batteries" were the most common cause of fires by application in 2023. *1
In response to this situation, the new model "Mobile Battery Fire-Resistant Case Large" has been added to the "Fire-Resistant Case for Mobile Battery" series, which was developed with the aim of naturally incorporating preparation for "what if" scenarios into "everyday belongings" rather than "special disaster prevention." This new model is larger, uses no metal materials, and is compatible with storing wireless charging standard mobile batteries.
■ Product Features
This product is an everyday carry disaster prevention item aimed at suppressing damage from accidents such as overheating and ignition of mobile batteries. It adopts a design that suppresses the spread of flames and heat with a 5-layer structure consisting of silicon and glass fiber cloth on the outer layer, fire-resistant cotton in the middle layer, and glass fiber cloth and silicon on the inner layer. Furthermore, a fire-resistant zipper is used for the opening and closing part, designed to suppress the transmission of heat from the opening. Since no metal materials are used, it is possible to store mobile batteries compatible with various wireless charging standards such as Qi/Qi2/MagSafe and Apple Watch (patent pending).
With the theme of "everyday carry disaster prevention," it combines a stylish design conscious of daily use with a large size that can store multiple mobile batteries together. The comfortable silicon coat has a water-repellent function, and it is available in three colors: black, green, and gray. It can be widely used as a storage case for mobile batteries or as a gadget pouch for carrying around when going out.
■ Mobile Battery Fire-Resistant (Flame Retardant) Case Large (EG-FR21S)
Black Gray Green
Colors
・Black (EG-FR21S/BK-B)
・Green (EG-FR21S/GR-B)
・Gray (EG-FR21S/GY-B)
Expected Retail Price (tax included)
Open price
■ Product Specifications
Size: Height 200 × Width 290 mm
Storable Battery Size: Three 20000mAh class mobile batteries
Heat Resistance Temperature: 800℃
Material:
Outer layer: Silicon, Glass fiber cloth
Middle layer: Fire-resistant cotton
Inner layer: Glass fiber cloth, Silicon
Functions/Standards:
Flame Retardancy (Compliant): UL94 / V-0
Heat Resistance (Compliant): IEC 60695-2-11:2021 / GWEPT:800
Water Repellency (Compliant): JIS L1092 / Grade 3
Country of Origin: China
■ Amazon Store Page
【Heat Resistant 800℃】Mobile Battery Fire-Resistant (Flame Retardant) Case Large (EG-FR21S)
Black: https://www.amazon.co.jp/dp/B0GYPH5N6H
Gray: https://www.amazon.co.jp/dp/B0GYPLLV8W
Green: https://www.amazon.co.jp/dp/B0GYPM382Y
■ Source
*1: Tokyo Fire Department "Fires from products equipped with lithium-ion batteries hit a record high - Beware of fires other than during charging!" press release (July 12, 2024). The figures for 2023 are preliminary.
Mobile Battery Fire-Resistant (Flame Retardant) Case Large (EG-FR21S)
■ Development Background
Products equipped with lithium-ion batteries require caution as they can lead to smoke and fire due to defects or deterioration. According to information released by the Tokyo Fire Department, "mobile batteries" were the most common cause of fires by application in 2023. *1
In response to this situation, the new model "Mobile Battery Fire-Resistant Case Large" has been added to the "Fire-Resistant Case for Mobile Battery" series, which was developed with the aim of naturally incorporating preparation for "what if" scenarios into "everyday belongings" rather than "special disaster prevention." This new model is larger, uses no metal materials, and is compatible with storing wireless charging standard mobile batteries.
■ Product Features
This product is an everyday carry disaster prevention item aimed at suppressing damage from accidents such as overheating and ignition of mobile batteries. It adopts a design that suppresses the spread of flames and heat with a 5-layer structure consisting of silicon and glass fiber cloth on the outer layer, fire-resistant cotton in the middle layer, and glass fiber cloth and silicon on the inner layer. Furthermore, a fire-resistant zipper is used for the opening and closing part, designed to suppress the transmission of heat from the opening. Since no metal materials are used, it is possible to store mobile batteries compatible with various wireless charging standards such as Qi/Qi2/MagSafe and Apple Watch (patent pending).
With the theme of "everyday carry disaster prevention," it combines a stylish design conscious of daily use with a large size that can store multiple mobile batteries together. The comfortable silicon coat has a water-repellent function, and it is available in three colors: black, green, and gray. It can be widely used as a storage case for mobile batteries or as a gadget pouch for carrying around when going out.
■ Mobile Battery Fire-Resistant (Flame Retardant) Case Large (EG-FR21S)
Black Gray Green
Colors
・Black (EG-FR21S/BK-B)
・Green (EG-FR21S/GR-B)
・Gray (EG-FR21S/GY-B)
Expected Retail Price (tax included)
Open price
■ Product Specifications
Size: Height 200 × Width 290 mm
Storable Battery Size: Three 20000mAh class mobile batteries
Heat Resistance Temperature: 800℃
Material:
Outer layer: Silicon, Glass fiber cloth
Middle layer: Fire-resistant cotton
Inner layer: Glass fiber cloth, Silicon
Functions/Standards:
Flame Retardancy (Compliant): UL94 / V-0
Heat Resistance (Compliant): IEC 60695-2-11:2021 / GWEPT:800
Water Repellency (Compliant): JIS L1092 / Grade 3
Country of Origin: China
■ Amazon Store Page
【Heat Resistant 800℃】Mobile Battery Fire-Resistant (Flame Retardant) Case Large (EG-FR21S)
Black: https://www.amazon.co.jp/dp/B0GYPH5N6H
Gray: https://www.amazon.co.jp/dp/B0GYPLLV8W
Green: https://www.amazon.co.jp/dp/B0GYPM382Y
■ Source
*1: Tokyo Fire Department "Fires from products equipped with lithium-ion batteries hit a record high - Beware of fires other than during charging!" press release (July 12, 2024). The figures for 2023 are preliminary.