The VdS-certified 12 V batteries can be used wherever devices need to be supplied with power immediately after a power failure. Due to their long service life and high reliability, they are particularly suitable for use in alarm systems. These batteries do not require maintenance during their entire service life. Thanks to their particularly compact design, the batteries are absolutely leak-proof. A special calcium alloy of the highest purity ensures a long service life. Depending on the average depth of discharge, you can charge the batteries up to 1000 times. All batteries are VdS-certified. They differ in size, weight and capacity.