Vision lead-acid battery 6FM40X with 12V and 40Ah

The Vision 6FM40X is a robust, cycle-resistant lead-acid battery (VRLA) with a nominal voltage of 12 volts and a capacity of 40 ampere-hours. It is specially designed for demanding applications involving repeated charge and discharge cycles. Thanks to the AGM technology (Absorbent Glass Mat), this battery delivers a reliable, leak-proof, and long-lasting power supply. It is the ideal solution for systems requiring high cycle stability, deep discharges, and an extended service life, and excels in both cyclic and standby applications.

Highlights at a glance

• Cycle-resistant: Designed for a high number of charge and discharge cycles, which significantly extends the service life compared to conventional VRLA batteries.
• VdS approved: G 107076 for safety-related applications
• High capacity: 40 Ah at 12 V for a long-lasting power supply.
• Maintenance-free: Thanks to leak-proof AGM technology with over 99% gas recombination.
• Low self-discharge: Only approx. 3% capacity loss per month at 20 °C, which allows for long-term storage.
• Flexible installation: Operation is possible in various positions, with the exception of permanent overhead mounting.
• Long-lasting: A service life of up to 10 years in the design life.

High performance for cyclic applications

The 6FM40X delivers reliable power in repeated discharge cycles. With a capacity of 40 Ah at a 10-hour discharge rate, this battery is an excellent choice for mobile applications and systems with high energy requirements. Its special construction, which utilises lead-calcium-tin alloys, enables high cycle stability and excellent recovery after deep discharge.

Robust technology for demanding environments

Thanks to the VRLA technology with AGM System the 6FM40X is completely maintenance-free and leak-proof. The electrolyte is securely bound in a glass fibre mat, which enables safe handling and operation in any position. The battery features self-closing low-pressure vent valves that ensure pressure equalisation within the cells. The housing is made of robust ABS plastic that is impact- and break-resistant and is also available on request in a flame-retardant version (UL94:V0). The low self-discharge rate of approximately 3% per month enables long-term storage while maintaining high operational readiness.

FAQs on the Vision 6FM40X lead-acid battery

For which applications is the 6FM40X best suited?

This battery has been specially developed for cyclic applications in which the battery is regularly discharged and recharged. It is ideally suited as the main power supply for electric vehicles such as wheelchairs and golf buggies, as well as for use in solar installations, telecommunications systems and mobile measuring devices. Furthermore, the battery has VdS approval, making it ideal for safety-critical applications such as fire and burglar alarm systems.

What does "cycle-resistant" mean?

A cycle-resistant battery is specifically designed to withstand a high number of charge and discharge cycles without significantly losing its capacity or service life. This distinguishes it from conventional lead-acid batteries, which are designed more for standby operation.

How do I charge the battery correctly?

We recommend using a charger designed for AGM batteries with a capacity of 40 Ah. Observe the charging voltages recommended by the manufacturer: 13.6 V to 13.8 V for float charging and 14.4 V to 14.7 V for boost charging. An excessively high charging current can shorten the battery’s service life.

How long does the 6FM40X battery last?

The battery has a design life of up to 10 years at 20 °C. However, the actual service life depends heavily on the specific operating conditions, the depth of discharge and the ambient temperature.