Sonnenschein A512/40 G6 lead-gel battery 12V 40Ah

The Sonnenschein A512/40 G6 is an absolutely maintenance-free lead-gel block battery developed for the highest requirements for operational reliability and an extremely long service life in professional standby applications. As part of the globally proven A500 series with Dryfit® gel technology, this battery offers extraordinary reliability. With a nominal voltage of 12V and a capacity of 40 Ah, it is the ideal energy source for fail-safe emergency power supplies in security technology, UPS systems and medical technology.

Highlights at a glance

• Superior Dryfit® gel technology: Absolutely maintenance-free throughout the entire service life, maximum reliability and leak-proof.
• Extreme longevity: Classified as "Long Life" (12 years and longer) according to Eurobat for maximum investment security.
• High cycle stability and deep discharge protection: Offers excellent recovery even after deep discharges.
• Robust construction: Reinforced, impact-resistant housing for use under demanding conditions.
• Low self-discharge: High shelf life and always ready for use in an emergency.

Maximum security of supply for critical infrastructure

The Sonnenschein A512/40 G6 is the specialist for standby parallel operation (standby use), where immediate and reliable energy takeover is crucial in the event of a mains failure. Its main fields of application are uninterruptible power supplies (UPS) for computer and server systems, emergency and security lighting systems, fire detection and alarm systems as well as energy supply in hospitals and telecommunications facilities.

Proven Dryfit® gel technology

The Dryfit® gel technology invented and perfected by Sonnenschein binds the electrolyte in a thixotropic silica gel. This not only makes the battery absolutely leak-proof and maintenance-free, but also ensures excellent cycle stability and a very low self-discharge. The internal gas recombination protects against capacity loss and makes operation particularly safe and efficient without the need to top up water.

Developed for longevity and reliability

The A500 series was developed for maximum economy over the entire service life. The extremely long service life of 12 years and more significantly reduces the need for costly and time-consuming battery replacement in permanently installed systems. The high manufacturing quality and the use of high-purity materials ensure constant performance and thus contribute to the high operational reliability of the entire system.
 

Features

FAQs about the Sonnenschein A512/40 G6 lead-gel battery

What is the main advantage of Dryfit® gel technology?

The decisive advantage is the combination of absolute maintenance-free operation, highest cycle stability and extreme longevity. Compared to AGM batteries, gel batteries are often even more robust against deep discharges and offer very consistent performance over a long period, making them the premium solution for critical standby applications.

What does the classification "Eurobat Long Life" mean?

Eurobat is the association of European battery manufacturers. The "Long Life" classification means that this battery is designed for an expected service life of 12 years or more under defined standby conditions (usually 20°C ambient temperature and correct trickle charging).

What is the difference between a standby battery and a starter or solar battery?

A standby battery like this is optimised for standby parallel operation. It is permanently kept at a constant voltage (trickle charge) and only rarely has to supply energy. A starter battery is designed for short-term, high currents. A solar battery (cycle battery) is optimised for daily, deep discharging and recharging.

How should this lead battery be disposed of?

Lead batteries contain environmentally harmful substances and must not be disposed of in household waste. You can return your old battery free of charge at any dealer who sells new batteries or at municipal recycling centres to ensure proper recycling.