Sonnenschein A412/120 A lead gel battery 12V 120Ah

The Sonnenschein A412/120 A is an absolutely maintenance-free lead-gel block battery developed for the highest demands in operational reliability and extremely long service life in professional standby applications. As part of the globally proven A400 series with Dryfit® gel technology, this battery offers exceptional reliability. With a nominal voltage of 12V and a high capacity of 120 Ah, it is the ideal energy source for fail-safe emergency power supplies in telecommunications, industrial facilities, and safety-relevant systems.

Highlights at a glance

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

Maximum supply security for critical infrastructure

The Sonnenschein A412/120 A is the specialist for standby parallel operation (standby use), where immediate and reliable power take-over in case of mains failure is crucial. Its main areas of use are uninterruptible power supplies (UPS), telecommunications and IT systems, emergency and safety lighting systems, as well as power supply in power stations, substations and railway systems. Wherever a power failure would have serious consequences, this battery provides the necessary security.

Proven Dryfit® gel technology

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

Developed for longevity and reliability

The A400 series was developed for maximum cost-effectiveness over the entire service life. The extremely long lifespan of 12 years and more significantly reduces the need for costly and complex battery replacements in permanently installed systems. The high manufacturing quality and the use of ultra-pure materials ensure consistent performance and thus contribute to the high operational reliability of the overall system.
 

Features

FAQs about the Sonnenschein A412/120 A lead-gel battery

What is the main advantage of Dryfit® gel technology?

The key advantage is the combination of absolute maintenance freedom, maximum cycle life and extreme durability. Compared to AGM batteries, gel batteries are often even more robust against deep discharges and offer extremely consistent performance over a long period, making them the premium solution for critical standby applications.

What does the "Eurobat Long Life" classification 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 (typically 20°C ambient temperature and correct trickle charge).

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

A standby battery such as this one is optimised for parallel standby operation. It is permanently kept at a constant voltage (trickle charge) and is only rarely required to deliver energy. A starter battery is designed for brief, high current loads. A solar battery (cycle battery) is optimised for daily, deep discharging and recharging.

How should this lead-acid battery be disposed of?

Lead batteries contain substances harmful to the environment and must not be disposed of in household waste. You can return your old battery free of charge to any retailer selling new batteries or at municipal recycling centres to ensure proper disposal.