Hey Padre,
Juice bottles can go in checked luggage - if carried on, they must fit in your quart baggie of liquids (with shampoo, lotion, etc.). That's supposed to go in the tray, but in January I forgot to take it out of my purse and it went right through the X-ray scanner, no questions - but it was only a few items. I also forgot a couple of assembled 510s in my purse (probably they looked like pens).
ALL lithium-ion batteries must be carried on, according to a recent TSA rule. That includes spare camera, laptop, phone, or any other Li-ion batteries. If you have several PV batteries, it is a smart to separate them in their own baggie just to make hand-inspection easy if they don't like what they see on the scanner. In a different baggie, put your atties/cartos (to prevent unexpected vapor from an accidental button press - you can imagine how that would go over).
I had my batteries baggie in my laptop carry-on, but a little too close to some loose USB cords and other random wires, so they pulled my bag aside and asked me what they were (regular 510s and eGo batts). Try to organize your carry-on bag so that these types of items are in separate areas, so they don't look suspicious on the scanner like mine did. It helps if any loose computer wires are neatly bundled (twist-ties/rubber bands).
TSA also recommends that you organize your checked luggage - tie up your charger cords neatly, and separate them into different areas. Put such electronics, wire bundles, etc. in a single layer, don't pile them together. Use layers of clothing etc. to separate them. Remember, you will not be there to explain anything when they scan your checked luggage. Wise packing makes it less likely they will riffle through your suitcase - if they can clearly recognize such items on the scanner, there's no need to open the bag.
I would not recommend you leave anything metal in your pockets. Coins, belt buckles, underwire bras and metal hair accessories usually trigger the metal detector.
My bags were well organized on my outbound flight, nothing attracted the least attention. I wasn't so neat on the return flight, and was questioned (very politely - he said, "are these...?" and I said, "e-cig stuff" - he nodded and that was that.
I also brought a bubble-pak SASE and stamps, in case they thought I had too many batteries and wanted to confiscate some... I had read about someone who had that problem.