Power Floating Led
Floating radio power usage?
I am building a floating radio to take on a float trip. I do not know much about power usage. I was going to use a car or deep well battery for power. I was wanting to run (4)-6X9 speakers, a amp, a 10" sub, and possibly some LED lights that would beat with the music that could be shut off during the day. Is this to much drain on the battery? The float lasts all day and I was concerned about draining the battery before the trip was over. I was told by the local Marine shop that once I start adding amps andor subs the power would drain much quicker. Any suggestions on stereo, speaker, sub, amp, size or the number of things I could run would be appreciated.
yeah, it comes down to the amps. The lights won't help either.
A deep cycle battery will commonly have a reserve capacity of 100-120 minutes. That means it can deliver 25A for about 2 hrs while maintaining a voltage of no less than 10.5v.
A semi-powerful amp for a system like you're describing, say 400w rms - is going to pull something around 18-20A at full volume.
So realistically, even with a GOOD deep cycle battery you're looking at 2-2.5 hrs. If you're not going to blast it that often you might get quite a bit more time out of it. Obviously a smaller amp will increase your use time as well.
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