Fishfinder Battery Life - How long?

[fishin4fun]

I just bought a new fishfinder and I'm going to pick up some little 12V batteries. I'm deciding between 1 or 2 and curious the life of them, etc. What can I expect from a battery? I realize different factors can eat more juice, but overall general battery life is what I'm looking for etc.

If it helps at all, it's a 2000 watts, 250 watt RMS, 640V x 320H, LCD Unit (Humminbird 565)

F4F
[signature]

[MGB]

Heres a few batteries to look at. I bought the 12volt 7amp about a month ago. I've used it 5 times. 4 of my outings I fished for 6 hours using the light to help keep it warm for half of the day and had no problem with the battery going dead. When I charged it for my next trip it still had alot of juice left and the charge was complete in about 15 minutes. My 5th trip I used it for 9 hours using the light about 4hours, during my last hour of the day it did not want to operater with the light on but ran fine with the light off.

http://www.radioshack.com/product.asp?ca...960%2D0471

http://www.radioshack.com/product.asp?ca...960%2D0471
[signature]