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I realize this isn't necessarily a how-to but I thought I'd share. If you're wondering why companies are so eager to have the customer throw out their try me buttons, a big reason could be the fact that the try me buttons are powered by LR44 batteries, aka, button-cell. These batteries go for about $5 for a pack of 3, so getting these batteries with something we were planning on buying in the first place is awesome!

The third button I got actually had a mini capsule attached to it. In that were 3 batteries.

In a way, disposing of these batteries is slightly hazardous. LR44 batteries can sometimes contain lead (ironically, the three I got from that capsule contains lead), which can be a hazard to garbage handlers if corroded or cut in half by the truck. Li-ion batteries, due to the heavy amount of metal in the batteries, can also cause soil contamination and water pollution. In 2015 a Kohl's department store in New Jersey had it's backroom catch fire due to Li-ion batteries scratching up against other batteries, as well as the metal container it was in. So, save the environment and your wallet ;)

<p>Nice life hack. Button cell batteries are expensive to buy</p>
<p>Expensive? <a href="http://www.banggood.com/Wholesale-50-pcs-AG13-357A-LR44-SR44SW-SP76-L1154-RW82-RW42-Battery-p-49777.html" rel="nofollow">As in 50 pieces for 3.70 US$? </a></p>
<p>A store near me sells them 3 for $5. Either way, whatever price, free is better than paid.</p>
<p>3 for 5$ (US I suppose) That's the rip-off people get that are too old to know how to use the internet. Or just _need_ it NOW. And not tomorrow or the day after and are therefore willing (forced) to pay premium.</p><p>Free is better than paid? It may look like that, but that's not correct. In fact there ain't no no such thing as a free lunch. </p><p>Yes, you may get some &lt;devices&gt; into your hand for free and they may hold some batteries that you can salvage easily. Great! But now you have to store them until you need / can use them. Are they still fresh then? Were they fresh when you got salvaged them? Perhaps they sat some months/years on a shelf. Will they work when you need them? No problem if it is just for a fun project, But what if it just _has_ to work? I'd happily pay for a dozen of them, test ten of them till dead and only use two of the pack to be sure they _will_ work.</p><p>So, yes, most of the time free is best. But sometimes, just sometimes ... paying for stuff may be a good idea.</p><p>But 3 for 5$ is still a rip-off... </p>

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