I was told that normal (disposable) Alkaline batteries can actually be safely recharged.  Up to 50 or even 100 times.\n\nIs this really true - can someone who is an expert in this area please share your knowledge - and also how this can be done.\n\nThanks!
204012
No, it's not true. You'll destroy your charger. \nAlkaline batteries are not designed to be charged.
382046
Sony made batteries for many brands including Dell, HP Apple and themselves among many others.  Here is the scoop however:\n\nSince they may explode only while charging, certain airlines ie Korean Airlines, not the FAA, is restricting the use of all laptops with battery not plugged in, or plugged into the aircraft power without the battery installed to prevent explosion.
599273
Most likely you didn't let the battery get fully charged the first few times before using it..... the more you do that, the less charge the battery can hold + you can only recharge them so many times before they can't be charged anymore and need replacing.\n\nSo, my best guess is that the battery is f***ed to the point where it can't be recharged fully anymore,
102856
A Furbie, actually three of them, from my Uncle.  I was 19 when he gave them to me.  I was like WTF are THOSE things?  They were cute until he put the batteries in them.  After a half an hour they were no longer cute but annoying and I was ready to kill them.  Eventually they all had 'accidents' including the one that caught fire.  It really wasn't on purpose that they were bad or wrong, my Uncle hasn't ever seen me as 'grown up' and I get some weird stuff from him all the time.
484214
Yes, the laptop battery works like our mobile phones' and normal batteries.  They will become wear and tear after long usage of charging and discharging.  You can replace your laptop battery when you find that it is running/working only for short period of time despite charging it fully.  This duration can be done in comparison to your initial usage period of the battery
546366
Laptop batteries have finite life spans. Whether you use the power cord and remove the battery it will lengthen the life of the battery.\n\nLi-Ion laptop battery lifespan is approximately 1000 charge cycles, or 2-4 years under normal operating conditions.\n\nKeeping the battery in a cool place can prolong its life but not in a period of extended storage. The Li-ion battery should be stored at 40 percent rather than full-charge state.\n\nThe battery ages even if not used. For best results, keep the battery cool. In addition, store the battery at a 40 percent charge level. Never fully charge or discharge the battery before storage. The 40 percent charge assures a stable condition even if self-discharge robs some of the battery's energy. Most battery manufacturers store Li-ion batteries at 15°C (59°F) and at 40 percent charge.\n\nKeeping a laptop battery on constant charge is and never using it is not good for the laptop battery. Run the battery down and recharging it at least once every month.
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Unless your batteries are used in a continuous timed manner such as might be with a hand held radio in an industrial setting, where the radios were charged at the end of every work shift, NiCad memory isn't the problem it is reputed to be. \n\nI have used a 50 ohm, 20 watt resistor placed across the small battery's poles to discharge them with success.\n\nHowever it should be noted that a TOTALLY discharged NiCad battery is suseptible to reverse charging if placed incorrectly in the charger. The original "positive" pole will become the "negative" and vise versa. Not a good idea for NiCads.\n\nProbably best to use the "discharge" function of your charger despte the time required, and not take chances, eh? \n\nAnother idea would be to replace them with Lithium Ion (Lithium) batteries which are not suseptible to the "memory" effect. Effective, but expensive.\n\nOuzinki\n\n(36 years as an electronics technician)
504445
no, you should charge it up, then unplug it and use it until battery is empty, then charge again. batteries last a lot longer when they're fully discharged, then charged again. if you keep it topped up by keeping it plugged in it shortens the battery life by a lot
375482
Yes connecting a battery would charge the two plates - like a capacitor.   You have not told us what your science project is?  I would guess that you may need a much higher voltage than the battery can provide - it depends on what you are trying to do.
86715
A lot of airlines have blocked off those little plugs - they don't want people plugging stuff in due to fire hazard.  You should call the airline, or see about spare batteries.  Personally, I don't think your PSP would be too much of a hazard, but if something goes wrong, help is a long way away...
151322
It is a polymer made up of two different monomeres. If it is used in batteries it will likely allow ion conduction, i.e. the migration of ions through the polymer. No idea whether an additional solvent is required, though.
114656
I recently read about new power strips that cut even standby power to equipment that are plugged into them. For example, your computer and printer still draw a current even if shut off. this tricle can add up over the course of a year. These power strips cut off that tricle until the moment the unit is roused from standby.\n\nThis was in a pretty good article in this month's Kiplinger's Personal Finance magazine.
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See sources for making a "lemon battery" or a "potato battery".  You'll probably need to hook several of these batteries together in parallel in order to get enough current to power an LCD, but it should be possible.  Alternatively, you can use pieces of copper and zinc sheet metal to increase the surface areas of the electrodes in each battery, which will increase the current produced by each battery.
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Near East, about 100 BC, it is believed from archaeological finds - ceramic vessels with metal rods, thought to have contained saline solutions.\n\nModern use of batteries was introduced by Galvani around 1790.\n\nThe principle is the same as for modern batteries: connected galvanic half-cells. The use seems to have been for electrolytic coating.
161471
Just in case you may still be looking.\n\nA PSP and a portable DVD player usually have rechargeable built-in batteries.  So, if he's going on a long trip, it may be difficult to recharge the device while in transit.\n\nMany standalone MP3 players support AA or AAA batteries. For this reason alone, I would suggest an MP3 player.  He can take extra batteries along and change them out as necessary.  Where, with the PSP or a DVD player, it may be difficult to find a place to recharge the battery.  Plus, it can take up to an hour or longer to recharge the PSP battery.  Although, there are battery kits you can get for the PSP that will run the PSP off standard AA or AAA batteries.  Even still, the PSP will likely blow through the batteries very rapidly.\n\nAnd, if you do manage to find a portable DVD player that supports standard batteries, you'll likely find that the play time is also only a couple of hours (blowing through batteries here too).  \n\nMost MP3 players have very long play times.  I have an MPIO MP3 player that runs on 1 AAA battery and lasts between 8-10 hours on that one battery alone.\n\nSo, for bus trips such as this, I would definitely suggest a device that supports standard batteries that you can buy anywhere.  On top of that, extra batteries are light enough to carry around.
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Baking soda will neutralize the sulfuric acid.\n\nBatteries do not produce sulfuric acid!\nSulfuric acid is placed in the battery to generate eletricity through electrolysis.\n\nAs far as making the lead useable, they do recycle car and lead/acid batteries, is that useful enough?  \n\nIf you are planning on opening a car battery you are asking for potential injury or death.  You could cause an explosion, end up blind, maimed, or possibly dead.  I have seen batteries explode and it is not pretty.  I have had a few rupture/burst very close to my face while working on cars, that is not a nice situation to be in either.  Fortunately I wasn't hurt except for superficially, but batteries can be very dangerous.\n\nIf you need lead metal for a project or experiment, go ask a tire shop for their old, throwaway wheel weights.  They usually have tons of them and don't mind giving them away.\n\nDivers used to use lead weighted belts to keep them from floating, maybe there's some salty old sea man around a dock or something who knows where you can find some.
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What I have always been told is that the battery that comes with the laptops, are bottom of the line batteries.  You can get the model number from the battery and either go directly to fuji, or search online for a replacement battery. \n\nThey are expensive I know that, but the replacement batteries seem to be better quality. \n\nI know there are alot of batteries out there that dont mind if you recharge them even if they are not used, but a laptop battery stays longer if you completely use the battery, then recharge it.\n\nI think the longest battery life for a lap top that I have seen is like 4 1/2 hours.  I just can't imagine a battery lasting 11 hours, unless there was a dual battery.