Issue with Shocker XL 2 MC

Horn kit recently started running about every half hour killing my battery. before it got cold it was fine. no air leaks detected. replaced filter and check valve and it seemed to fix it for a few days. any ideas would be great!!!

Thank you

Hey i was told that when the winter comes and or it gets cold you will loose a lot of your air and when it is warm if you place about 120psi in your tank it could expand with more air because of the heat so i guess it a temp thing