I don't doubt you experienced what you say you experienced, but I do seriously doubt that what you say CAUSED it actually caused it, because seriously now, how exactly would a battery cause ache and muscle cramps just by being close to you?
Answer:
it can't. There's no physical properties of a battery that can affect the cells of the human body such as you describe. Batteries don't even have a static electrical field, such as a charged capacitor would have for example, so it would have no effect on your person just by you carrying it close to you.
What you're experiencing is quite obviously a psychosomatic response, and you should talk to a doctor, possibly a psychiatrist to figure out what in your daily life is causing it, so that you can fix it (and live happier and with less pain.)
Stress in our daily lives is often a big factor. We humans have built a society to which we ourselves are poorly suited. It's extraordinarily silly and counter-productive, I know. We often get too little sleep, drinking coffee, maybe alcohol late in the evenings, we stay up long after dark with the help of electric lights and watch the blue flicker of the tube (well, flatscreen these days) or computer, and simply live too far north (or south) where daylight cycles don't correspond with our biological clock, which all has the effect of upsetting our melatonin cycle, causing us to feel tired and wrung out. We get up too early, work too much, quarrel with our loved ones, worry over our personal economy, eat bad food with too much fat, sugar and additives and not enough veggies, sit too much, exercise too little...
It's no wonder people feel worn out, and it can manifest in various ways.
It will happen if you think it will happen. That's how these sort of reactions work.
In blind studies, EM sufferers have been no more accurate at detecting EM fields from electrical devices, wifi or cell phones than they would have been at guessing the outcome of a coin flip. Chances are strong you would experience the same symptoms you do from carrying your macbook if I handed you a computer bag and told you to watch my laptop while I ran off to the loo for fifteen minutes, only to come back and then show you all that was in the bag was a coffee table book.
Well, to cause you pain, bluetooth would by its very definition have to affect our cells. What do you think pain response is? Everything in the human body comes down to chemical reactions in our cells. Everything, from basic metabolism, replicating new cells, nerve signalling, protein manufacturing, immune system response, memory formation... Down to consciousness itself. And yes, this includes the feeling of pain, ache and so on.
We can easily test that being conscious, and being alive is because of the electro-chemical interactions in our brains, and not because of some "spirit" or "soul" inhabiting us by ingesting (most often illegal) drugs that affect brain chemistry. We may see and experience things that are not there.
So for you to feel pain, something must affect either your nerves or the cells attached to them, to trigger such a pain response. We know microwaves from cellphones and wifi gear cannot do this, especially not at the tiny power level these transmitters work at - on the order of a thousandth of a common household lightbulb (which are banned from sale in many places these days I know, but it's such a common point of reference I hope you'll forgive me.
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Well, begging your pardon, but if you don't know these things you're just going by confirmation bias/"post hoc" fallacy, which is not going to help you. No human being is "more sensitive" to 5GHz microwaves than others, because humans aren't sensitive to these waves at all. We have no specific apparatus to receive them. Some of the energy from the transmitter is absorbed in our tissues and converts to heat (minute amounts; inverse square law is applicable here), and that is all.
You're not unique in having these feelings, quite a few people feel the same way. That doesn't mean your problems are caused by what you think they are, and no, that doesn't mean you're not feeling what you think you feel. But your blame is misplaced, because we have science, and we have studied these things.
I trust science, that's how we've gotten where we are right now. If household wifi for example could somehow hurt or harm (some) human beings, many of the fundamental truths which we cling to in physics would not work. But they do work. So wifi can't have these properties, it must be because of something else.
Because batteries don't "emit energy". That's what I mean when I say that people can get irrationally suspicious about things they don't know enough about.
Well, what can I say? "I'm sorry that you feel offended"? Too passive-aggressive, I take it back.
No, there's nothing offensive about being ignorant about things.
Nobody knows everything. I certainly don't.
Even scientists don't have a clue about everything about science, which you notice every time some guy opens his gob on the topic of how bunk global warming is on account of his Ph.D in astro-physics...
So there's no reason to feel offended, and my intent wasn't to offend. Just to provide context, and perspective.