XS Power D4700. A reinforced plastic case protects it in your vehicle. If you've got a boat or an RV, XS Power's got a solution for your electric needs, too. XS Power deep cycle batteries feature a sealed absorbed glass mat (AGM) design that incorporates special glass fiber mats that contain the acid electrolyte between the lead plates, rather than a standard flooded (liquid) design.
I have about 1200 rms worth of power coming out of this battery and I havent seen my voltage drop below 13.6 at my amps inputs and my headlights don't dim (Diesel truck with 2 front batteries plus this one in cab). They're heavy as sin but other than that I love it. Sky high 4 or 6 spot terminals are a great and easy addition for this battery.