I need to jump start my 2004 Honda Odyssey after I drained the battery using an air compressor to pump up the tires. I neglected to have the engine running. The Honda battery is 4 years old so I probably need a new one? For now, I’m looking to just jump start it. I am not sure what the cable right next to the positive terminal post is but it’s interfering with me putting the jumper cable on it. Please see attached photo. What is that thing in the way and can I loosen it in order to do the jump start? Thanks.