When portable power banks just won't cut it and you need an expansive power option on the water, the Yak-Power Battery Box Kit delivers the ultimate power solution for your kayak. Its integrated Power Port handles any of your 12V accessories, from fishfinders to bait well pumps, LED lighting, phone chargers, and any other 12V electronics you carry. The integrated 5V, 4.2A dual USB chargers bring intelligent charging for phones, tablets, cameras, handheld GPS units, and countless more devices. A built-in Master Power Switch gives you full control of your power should be on or off, and the waterproof build quality on the Yak-Power Battery Box Kit ensures peace of mind and reliable use. Its compact design allows stowing in most hatches, and it works easily with a built-in booted, watertight fuse holder with 15A fuse. This kayak battery box holds up to 3 7Ah batteries or 2 12Ah batteries for customized power requirements, and adds an adjustable slide track and strap for securing batteries in place, taking your kayak adventures to incredible new heights. Includes home charger. Manufacturer model #: YP-BBK. Ultimate kayak power solution Integrated Power Port to power your 12V accessories Holds up to 3 7Ah batteries or 2 12Ah batteries Compact, waterproof design Stows in most hatches Master Power Switch Integrated 5V, 4.2A dual USB Charging ports Built-in booted, watertight fuse holder with 15A fuse Adjustable slide track and strap for securing batteries in place. Includes home charger Works with: Power Ports (YP-PMC48S, YP-PMC96S, or YP-PMC144S) Power Panel switching system (YP-RP5R) Power Plug (YP-SAE4)