ITEM DESCRIPTION The GEL model range offers best deep cycle durability and overall longer life. The use of high purity materials and lead calcium grids ensure that for both AGM and GEL products have particularly low self-discharge so that they will not go flat during long periods without charge. Both ranges are supplied with M8 drilled, flat copper terminals ensuring best possible connection contact and eliminating the need for battery terminals. VRLA GEL: design life 12 years Features VRLA technology - VRLA stands for Valve Regulated Lead Acid, which means that the batteries are sealed. Gas will escape through the safety valves only in case of overcharging or cell failure.VRLA batteries are maintenance free for life. Sealed (VRLA) GEL Batteries - Here the electrolyte is immobilized as gel. Gel batteries in general have a longer service life and better cycle capacity than AGM batteries. Low Self-Discharge - Because of the use of lead calcium grids and high purity materials, Victron VRLA batteries can be stored during long periods of time without recharge. The rate of self-discharge is less than 2% per month at 20°C. The self-discharge doubles for every increase in temperature by 10°C. Victron VRLA batteries can therefore be stored for up to a year without recharging, if kept under cool conditions. Exceptional Deep Discharge Recovery - Victron VRLA batteries have exceptional discharge recovery, even after deep or prolonged discharge. This item is in the category "Vehicle Parts & Accessories\Caravan, Campervan & Motorhome Parts & Accessories\Other Caravan & Motorhome Parts & Accessories". The seller is "leisurevehicleaccessories" and is located in this country: GB. This item can be shipped to United Kingdom.