Trailer battery size

[hoamskilet]

I'm going to be installing some strips of LED lights inside my trailer and some spot lights on the rear of the trailer. I'm planning on installing a stand alone battery inside the trailer to be able to power those lights when not connected to the truck.

For those that have done this, how large of a battery have you used? Obviously don't want to spend more money than I need to, but don't want to have to upgrade later because I went too small on the battery

 

[euphoric1]

hoamskilet, I did a post like this a while ago as I did the same except for outdoor spot lights, due to the low draw and limited time I actually use lights I just used a U1L battery basically a 340 cca lawn and garden battery, I purchased some nice housed LED strip lights made by Thin-Lite corp they are 48" and have dimmer switch on end, and by housed they have an aluminum housing with removeable lens and draw 19.2 watts, so far so good