batteries

Bounce an AA battery to find out if it’s spent

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I don’t exactly know that I needed the whole of this 5’32” video to grasp the concept: if you drop an battery it will bounce if it’s empty, it won’t if it’s full.

Empty. Full. Really I suppose I mean empty as in used up, full as in still has a charge. The folks behind this video call them good batteries vs bad batteries, though that just seems harsh.

Watch the start for proof and a demonstration of how you don’t have to throw the batteries on the ground to test this. Then carry on for an examination of why it may all be true.

One to watch: using AA batteries to recharge iPhone

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I know barely a pixel more than this: an iPhone recharger that uses AA batteries is coming soon. I don’t think I need to know much more than that, though the price and whether it’ll be available in the UK would be handy.

Here’s the pixel more I know; there will be a launch in nine days time at Oivo.

Go take a look now because the minimal details available so far include a photo of what it’ll look like.

I should say, by the way, that I think there is bugger-all chance that this will also recharge an iPad. In case you were wondering.