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Questions tagged [battery]

A device for storing electricity in a convenient compact form usually via chemical processes.

18
votes
1answer
762 views

Does fully discharging a Lithium-based battery reduce its lifespan?

According to Battery University, the less you allow a Lithium-based battery to discharge before charging it again, the less wear it will undergo and therefore the longer lifespan it will have. (e.g. ...
40
votes
5answers
9k views

Does China control 85% of the supply of rare metals used in lithium batteries?

A selected letter in The Guardian talking about electric vehicles claims: The rare metals in lithium batteries are produced only in inconvenient places. More than 85% of the world’s supply comes ...
7
votes
0answers
363 views

Can aspirin revive a flat car battery?

I just read this article on The Reader's Digest which writes to say If you get behind the wheel only to discover that your car’s battery has given up the ghost — and there’s no one around to ...
5
votes
0answers
554 views

Does the 3M mouse pad extend battery life up to 50% or 75%?

The 3M company has a product called 3M™ Precise™ Mouse Pad with Repositionable Adhesive Backing and Battery Saving Design, MP200PS that claims to: Battery saving design extends battery life of ...
19
votes
1answer
559 views

Is widespread adoption of the electric car unlikely due to lithium scarcity?

Although lithium is very abundant in sea water, only lithium mineral extraction seems to be economically viable. The world's total reserves in lithium minerals is estimated at 13.5 Mt (not sure ...
8
votes
2answers
763 views

Can Lithium Ion batteries explode or self ignite?

Transport Canada treat lithium batteries as dangerous goods: While most lithium batteries are safe, some have overheated and caught fire. Once ignited, they can cause any nearby batteries to ...
10
votes
2answers
991 views

Can bouncing batteries tell you if they are charged or not?

I saw this article this morning, and while it seemed fairly legitimate, I was skeptical about it. The claim is that if you drop a battery (flat end down) it will bounce higher/longer if the charge is ...
28
votes
1answer
2k views

Can the health of an alkaline battery be determined by bouncing it?

I was just sent a YouTube video, which appears to demonstrate that one can determine the "health" of a battery (current voltage, useful lifetime remaining, etc.) by bouncing it on a level surface. A ...
8
votes
1answer
379 views

Do lithium ion batteries double effective performance every 18 month similar to Moore's law?

On Quora a person claims that lithium ion batteries improve roughly similar to Moore's law: The installed price of lithium ion batteries is dropping in half every 18 months and they last twice as ...
18
votes
2answers
10k views

Can you recharge a phone battery in the microwave?

Claim from Facebook: Did you know? A smartphone microwaves for just one minute will fully charge the battery. Lifehacker insists it's fake, and I know it is, but I figured it'd be a useful ...
17
votes
2answers
5k views

Does never charging a laptop battery to more than 80% capacity increase its lifespan?

In relation to Does recharging a battery when it is only half-way dead decrease its life span? I read an article about Maximizing the lifespan of a laptop battery where Samsung puts it: Most ...
3
votes
2answers
716 views

Charging Lithium-Ion batteries

I often listen people saying that this battery's first charge has to be in 24 hours, others says at least 8 hours... So I have some doubts... Is it true that the first charge has to last 24 hours? ...
14
votes
2answers
5k views

Does keeping batteries in the refrigerator ensure longer battery life?

I've heard that keeping batteries in the refrigerator ensures long battery shelf-life. Is this true? If not, where did this information come from?
8
votes
1answer
6k views

Should we remove batteries from electronic devices when not in use?

When I bought a digital camera recently, the shopkeeper advised me "to remove the batteries when the camera is not used for a long time". I have heard this kind of thing for other devices also (like ...
38
votes
2answers
37k views

Can you recharge non-rechargeable alkaline batteries?

There are conflicting reports of whether it is possible to safely recharge alkaline batteries (not lithium) that are not sold as rechargable. The packaging for batteries regularly has cautions ...