Battery from Patona of the Protect series. These are characterized by a housing that is fire retardant and extremely heat resistant. It was specially developed for extreme continuous use. The battery housing made of fire-retardant V1 material ensures the resistance of housing temperatures of up to 90 degrees without deforming. In addition, only selected brand-name high-performance cells are used for the battery. The Patona Protect series is the perfect revolution in the battery market, which combines extremely high safety and performance with durability. Furthermore, as with the original battery, NTC resistors (negative temperature coefficient) are mounted on the battery circuit board, which control the temperature control and automatically switch off in case of overheating.