Humminbird MEGA Live 2 Transom Mount Bracket [740252-1] Marine Hardware | Shaft Seals The Mac Plus DC-DC charger

The Mac Plus DC-DC charger solves this problem

Battery capacity range: 24-120 Ah&nbsp

Box Dimensions: 6"H x 6"W x 19"L WT: 5

you are going to need a powerful and waterproof rated  amp that has a small footprint and also make great power

Cradle Dimensions:

Humminbird MEGA Live 2 Transom Mount Bracket [740252-1] Marine Hardware | Shaft Seals The Mac Plus DC-DC chargerMEGA Live 2 Transom Mount Bracket The MEGA Live 2 Transom Mount expands the versatility of MEGA Live 2, allowing anglers to install the transducer on the back of the boat, like traditional 2D, Down Imaging, and Side Imaging transom mount sonar. Its ideal for multispecies and center console boats and supports a wide range of fishing styles, including trolling, vertical jigging, and bottom fishing. Features: Attach your MEGA Live 2 transducer to the