Major Electrical problems

[GotSandH3]

Sometimes it seems like my H3 has a dead battery. There are times when the remote key doesnt work and I have to use the blade key to get in. Then there are times when the remote key works but when i go to start the car nothing happens. No ignition or anything. Like the battery is completly dead. It starts working after about 5 atempts. Then for some reason my clock keeps resetting after every key cycle. Then there will be times when Im driving and I'll hear a pop coming from my speakers, like the electrical was turned off and then back on real quick.

The only mod electricaly that I have done is electronic trailer brakes. But I'v had that installed for a while now.

Anyone else have or heard of this problem??