Battery question for stereo install

[The OtherBigJohn]

Originally Posted by arcitech

I used the Poly Planar mp3 kit with an Autozone motorcycle battery and an onboard 1.5amp charger. Isolated from the cart batteries, and will play all weekend on a charge. Battery and charger cost as much as a 25amp converter, but I don't worry about the wife being stranded after listening to the radio at max volume all day on the beach. Everything fits in the driver side of my TXT and runs off my MP3 player so I have radio, games, music and videos if needed. Only gripe is the speakers could have been a little better, but for the price, it works great. If you look at the marine amps/radios/speakers, you will find some good stuff, just be prepared to do a little work to get everything the way you want it.

I have been hearing about mp3 kits maybe I'll look into that. That's all I need it for, no am/fm/cd needed.