Zinc Coal / Zinc Air
The Varta Longlife 430, internationally standardised as 4R25, is a robust and extremely long-lasting 6V block battery for continuous operation. Specialising in applications with low but constant energy requirements, it is the economical and reliable choice for safety lighting, agriculture and mobile use. Its proven zinc-carbon technology and practical spring contacts make it the standard solution for weeks of self-sufficient operation.Highlights at a glanceReliable continuous operation: Optimised for low-drain applications such as warning lights and electric fencing devices.Economical solution: Proven zinc-carbon technology for an excellent price-performance ratio.Robust design: Stable housing for demanding use on construction sites and outdoors.Secure connection: Practical spring contacts for easy, quick and vibration-resistant connection.High capacity: Long-lasting energy for weeks of low-maintenance operation.Specialist for construction site, agriculture and safetyThe Varta Longlife 430 is the preferred energy source for a wide range of professional applications. Its main area of use is to power construction site and warning lights, where it reliably ensures continuous or flashing operation. In agriculture, it is indispensable for operating electric fencing devices. It is also used in camping and leisure for large lanterns and lamps.Proven zinc-carbon technologyZinc-carbon technology is the ideal choice for devices with low and continuous energy consumption. Compared to alkaline batteries, it offers a very economical solution for this specific area of use, without compromising reliability. The Varta Longlife 430 is designed to deliver its energy slowly and consistently to achieve maximum runtime in continuous applications.Focus on functionality and safetyThe entire construction of this battery is designed for tough practical use. The impact-resistant housing protects the inner block from moisture and mechanical stress. The large spring contacts guarantee a simple but extremely effective and safe electrical connection, which is not interrupted by vibrations such as those found on construction sites. Features Model Varta Longlife 430 / 4R25 Battery type Zinc-carbon Rated voltage (V) 6 Capacity (mAh) 9300 Dimensions (L x W x H in mm) 115 x 67 x 67 Weight (g) 570 Connection Spring contacts FAQs about the Varta Longlife 4R25 batteryFor which devices is this battery mainly intended?This battery is ideal for devices with low, but long-lasting energy requirements. These include, above all, construction site warning lights, flashing lights, large camping lanterns and electric fencing devices.What is the difference to an alkaline version (4LR25)?The main difference is in the cell chemistry. The zinc-carbon version (4R25) is the more economical choice and perfect for devices with low, constant power consumption. The alkaline version (4LR25) is more expensive, but offers higher capacity and performance. It is better suited for devices with higher power consumption (e.g. bright halogen hand lamps) and for use at very low temperatures.What is the advantage of the spring contacts?The spring contacts enable very easy, tool-free and quick installation. They provide a secure and firm fit of the lamp head or connection cables and ensure a reliable power connection that is insensitive to vibrations.Is this battery rechargeable?No, the Varta Longlife 430 is a primary battery and cannot be recharged. Attempts to charge are dangerous and can cause the battery to leak or burst.How should this battery be disposed of?Batteries must not be disposed of in household waste. Please take the empty battery to the appropriate collection points in shops or municipal recycling centres to ensure environmentally friendly recycling.
The Varta Longlife 431, internationally standardised as 4R25X, is a high-performance block battery based on zinc-air technology and developed for extremely long-lasting continuous applications. With its extremely high capacity, it provides a reliable supply of energy for months for devices with consistently low energy consumption. It is the first choice for professional applications in agriculture and traffic safety, where maximum autonomy and minimal maintenance are paramount.Highlights at a glanceExtreme longevity: Zinc-air technology for by far the highest energy density and longest lifetime of all 6V block batteries.Maximum cost-efficiency: Reduces operating costs through extremely infrequent battery replacements.Specialist for continuous use: Optimised for devices with low but constant energy consumption over many months.Robust construction: Sturdy housing for demanding outdoor use in all weather conditions.Secure connection: Practical screw terminals for a firm and absolutely secure connection.Specialist for agriculture and traffic safetyThe Varta Longlife 431 is specially designed for two main areas of application: powering electric fence devices and powering construction site and permanent warning lights. Its unique zinc-air chemistry enables these devices to be used for an entire grazing season or for months without changing the battery, making it the most efficient solution for hard-to-reach or maintenance-intensive installations.Innovative zinc-air technologyZinc-air technology utilises the oxygen from the surrounding air as an active component for the chemical reaction. To activate the battery, simply remove the adhesive strip from the air holes. After a short activation time, the cell supplies a constant voltage and a large amount of energy. This technology enables a capacity far above that of alkaline or zinc-carbon batteries.Focus on functionality and safetyThe entire construction of this battery is designed for maximum reliability in outdoor use. The impact-resistant housing protects the cells from weather influences and mechanical stress. The screw terminals ensure an extremely secure and permanent electrical connection that cannot come loose even with vibrations or exposure to the elements, which is essential for continuous use. Features Model Varta Longlife 431 / 4R25X Battery type Zinc-Air Rated voltage (V) 6 Capacity (mAh) 30000 Dimensions (L x W x H in mm) 115 x 67 x 67 Weight (g) 770 Connection Spring contacts FAQs about the Varta Longlife 4R25X batteryHow is this zinc-air battery activated?Before first use, the sealing adhesive strip must be removed from the battery's air holes. It takes a few minutes for enough atmospheric oxygen to penetrate the cell to achieve full power. Once activated, the process can no longer be reversed and the battery will slowly self-discharge.What is the difference compared to the 6V block batteries 4R25 (zinc-carbon) and 4LR25 (alkaline)?The main difference is the energy density. The zinc-air battery (4R25X) offers a three to four times higher capacity than the zinc-carbon version, and still a significantly higher capacity than the alkaline version. It is the absolute specialist for extremely long runtimes at low continuous current, as is typical for electric fences and warning lights.What is the advantage of the screw terminals?Screw terminals allow a particularly firm, secure and corrosion-resistant connection of the connecting cables. This is particularly important for outdoor use to ensure a permanently reliable contact even in the event of moisture and temperature fluctuations.Can I use this battery for a bright hand-held spotlight?No, it is not ideal for this. Zinc-air technology is optimised for devices with low continuous current. For applications with a high current requirement, such as a bright spotlight, an alkaline block battery (4LR25) is the better choice as it can supply higher currents.How should this battery be disposed of?Batteries must not be disposed of in household waste. Please take the empty battery to the designated collection points in stores or municipal recycling centres to ensure environmentally friendly recycling.