batteries in the sun

hi katemeow(i like your name :D)i put batteries out in the sun once. then put them in a small hand held fan. the fan ran faster than usual. it went so fast it startled me. i wasn't meant to go that fast. hehe. i never tried it again.

This actually surprises me Kate and everyone I have spoken to does not believe it would work with a standard non-rechargeable battery. The general consensus is that the batteries would have to get very hot and if they did that then there is a huge risk that they would explode. That means there is a high likelihood that someone would end up being injured and possibly seriously as well because if they are hot enough to actually explode the force would be large. One of our friends had what seems like a logical explanation to me. You are busy using whatever it is that takes these batteries and it gets sluggish in operating so you turn it off and just let the whole thing cool down. Then after a while when the batteries and “tool” has cooled down, you turn it on again and often you will get a few more minutes operation before the batteries totally fail. That actually makes more sense to me than being able to recharge normal everyday non-rechargeable batteries from the sun. However if you wanted to try what others have suggested and leave the batteries in the sun, I would make sure they are COLD before putting them back in the “tool” and trying to use it.

I think it would work. Just make sure they don't get ot hot so like put them in a window sill where light can get to it but keep a check on it. With rechargeable batteries the charger gets pretty hot so maybe it would work to give a few extra minutes,hours into a battery..would save money..

i would think if they got hot enough they would explode so i wouldnt try it just because of that but it would be cool if it worked!!

I doubt it. The suns rays would only basically heat the battery. If that would work, then you could do that on the stove or something. I can't imagine the light of the sun actually penetrating through the metal of the battery. But that's just my guess.

I think it works. Because i think the sun rays just raise temperature of the battery a little and it turn the chemical in the battery is heated and produces energy.You will also find written on the batteries that " Do not dispose or throw in fire" If you throw them in fire they will explode.It means that if you mildly raise the temperature of the battery It will get slightly charged. If you increase the temperature more it will get more energy and eventually explode. NOTICE that when you recharge rechargeable batteries they get hot, I think it works on the same principle