Has the value and quality of manufacturing the battery contacts. They should be made of lead and ensure secure fit. Problems can arise when spontaneous disconnect the cable from the failed designs of contacts, creating unnecessary resistance to the current, For example if you are installing steel contacts or in their oxidation. However, and expensive batteries when they are improperly installed and operating, as well as bad service does not serve you for a long time. But this is a topic for another notes. Here we would like to tell about batteries company Vetus, as an example of standard quality. All batteries Vetus company designed specifically for use on board ship.

Different minimal self-discharge and able to start the engine after a long winter. Unlike automobile batteries, ship often used with the engine off (provided the work of pumps, lights, ventilation, etc. shipboard equipment, and therefore more likely to be deeply discharged. Vetus batteries are designed so that they can work for a long time under a heavy load, and then another and start the engine. An important characteristic of these batteries – they do not require the addition of electrolyte, since come on board filled and that is enough for a lifetime. Therefore, their body is sealed, except for small holes for ventilation. Not is also required and cleaning the terminals, that is, batteries are maintenance free. Other useful features of batteries Vetus: they are lighter and smaller than conventional batteries, sold charged and ready to work. vrla batteries are lead-calcium type – Universal When installed on board the 2 separate batteries for engine starting and lighting, both batteries have a shorter life span.