Intuition

Do you know I should listen to my intuition more. Only the other day I was preparing for another long day of filming and as I was loading the camera kit into the van, I decided to only take one camera. A voice inside my head said something to me about batteries and what if the other battery ran out. I ignored it and left the second kit behind.
So off I went to the job with the crew. A couple of hours into the day as we prepared to film Princess Anne, what should happen - "it looks like the battery is about to run out Emma" - oops! We went back to the press tent, put it on charge hoping by the time she got there it would be charged sufficiently to use. Luckily we found another battery and got through the rest of the day. But why did I choose to ignore that voice?
There's a part of me which thinks I make that decision every time I go out filming, so maybe it was nothing; but then the other side of me says no, you've never heard that voice remind you about batteries.
I sometimes hear that voice at roundabouts when cars don't indicate to tell you whether they're coming all the way round and a voice tells me not to go. It's a good job I wait most of the time as otherwise an accident could have happened.
That voice also tells me other things; it could be a reminder or a warning. I do listen sometimes and I keep telling myself I must listen to it, because most times having heeded the words I have been saved numerous occasions.
So what is that voice - intuition? a guide? you picking up on subtleties in people's body language? What have you experienced with intuition?
I know I'll hear that voice again but I need to rely on it and believe it and go with that gut reaction and not question or dismiss it. Or I am stark raving mad? You decide...