The Wilderness SystemsLithium Batteryrefines the kayak battery beyond the heavy and cumbersome marine batteries of the past. Lightweight and water-resistant, the Lithium Battery not only excels in form but in function with multiple output options as well as superior efficiency, power and amp hours. The compact design conveniently stows in most kayak hatches and is compatible with solar panels and most electronic devices. Key Features 15 Ah 6 high capacity dells Hard protective casing for protection LED lights indicate remaining charge left Water resistant Lightweight and compact design Custom fits the Lithium Battery Cradle and Fish Finder Install Kit Compatible with Solar Panels and most electronic devices Input: 5V 2A max (USB Standard) Three output options: 1 - DC 12 volt, 2 - USB 5 volt 4 LEDs indicate charge capacity, over charge, over discharge Comes with a 12-volt bare wire output cable with crimps and heat shrink tubing, and USB charging cable Note:The recommended limit forthis battery is 12v, 1.0 Amp. This limit accommodates most popular fishfinders but there are some exceptions. Fishfinders that do not work well with the Lithium Battery typically exceed either the 12v or 1.0 Amp parameters. Two popular examples are: Garmin 73sv – the current draw is 12v 1.41Ah. Ah is higher thanthe battery compatibility, and Lowrance 7TI – the current draw is 13v 0.9Ah. Voltage is higher thanthe battery compatibility. ** Please note that if the battery shuts down while powering on your fishfinder, the battery is performing as designed for your safety. In this case,the protection circuit is sensing over current demand and shutting the battery off. This prevents damage to the fishfinder and prevents a hazardous situation with battery overdraw.