Dead cell...?

[CONRAD II]

Left my h2 stored at my dads beach house for 2 weeks & when I picked it up batt was dead. After about 20 mins I was able to jump it, but when I tried to restart the truck after running it for an hour and turning it off, batt was dead again. I just put in a new batt about a month ago so as far as I can see, it's either a bad batt or something is draing my batt slowly.... Any suggestions...?

[IRA51]

pull the battery out and trickle charge it for 24 hours ,than test it with a battery tester (auto zone will do it free) if the battery is good you have a bad conection on your side post cables . you may also want to check the Alternator to see if it puts out 13 to 14 volts.