AGM stands for Absorbed Glass Mat (technology) Velcell DCA75-12 is made for Heavy Duty Deepcycle. Great for a Auxiliary battery in modern day engine bay setup that requires the european step down DIN design battery. We have found these increasigly popular in electrically driven trailer systems Hassle free maintenance free design means simply just install and keep an eye on the voltage and ensure that the battery is being charged properly to prolong its life.
Keep the battery voltage above 12.4v for maximum lifespan, The lower you bring the voltage the down the harder the cycle. These batteries are made for deepcycle use but please don't get that confused with being left flat. Flat batteries will corrode over a short period of time and won't perform properly long term. Simple rule of thumb use the product and then charge the product straight away afterwards unless you have a onboard charging system like a Solar panel or a DCDC/BCDC Charger running.
Please keep in mind these batteries can start cars too with the large 760cca rating if you require it. | 
