purpose of battery in aircraft  electrical system?
366658
In a small aircraft its the same as a car: 1) to start the engine, and 2) to provide limited electrical power when the alternator is not running or failed.
60886
(hm hm condenser...you must be old school)well we can and kind of have in ways. Helmholtz described charge starge devices that are largely used today as "batteries" for memeory backup. such a charge storage device has great capacity and unlike the capacitors it can be put in series to increase bothe input and output voltage. the internal dielectric is not very great so there is considerable leakage compared to a tradition electrolytic. the scheme used today comprises as a layer of activated charcoal a dielectric layer and then another charcoal layer. you can buy these easity in small units that are as muc as a few fards and a few voltas. \nwhen the lighting strikes, though, the power factor is so low that the internal wiring are likely to burn out. there is c acomapnay, (i dont remember the name), is designing such "batteries" as a methos for propelling vehicles. i think the name of the comapny is Maxwell (not be confused with Maxell).\ni personally have experimented in creating such batteries that store energy as dc but when released it is AC! such a battery would be used in vehicles with more efficient motors and safer too. An ac battery of course would require controls and would use similar schema as what Helmholz described.....\nthere is a great book on Helmholz publised by UC press that leaves one to think that this amn knew way more than einstein ever did and his genius out stripped einstein and leaves him in the dust.\nalso one does no need lightning. therer are enough free electrons in the air to creat a good chrage over time. take a CRT from stock never used is ok, and touch the anode dimple. knocks you right back. that is a charge from the air.
743213
Hi there...\n\nProfessional battery equipment is needed to recondition any battery, and the LITHIUM ION are the most deadly .... \nIn battery shops accross the country, the service technicians will generally not TOUCH a lithium Ion. \n Where I am located, there is a shop, and they tell me that they would have to install a fire-brick fume-hood, with explosion proof shielding, and other specialized bomb disposal stuff, before they could work on the Lithium ion batteries.\n As one other answer stated, the batteries, despite being " no memory " unlike Nickle Cadmium batteries, which "remember" being both not fully charged, and not being fully drained, the Li Ion batteries just plain die. Another answer gives you a link to NI-Cads, which is useless. The charging and cycling of Li-Ion and Ni-Cad are completely different. With old Ni-cads, you can use an ordinary capacitor to zap the batteries back to life, once. The professionals use very sophisticated machinery to revitalize older Ni-Cads. Nickle Metal Hydride are in the middle of the pack, with a different set of characteristics.\n  YOUR batteries are the worst.\n\nIf over heated, they will bloat, crack, and gas will escape in a foot long flame  that will cut through solid bone.. ie ... it can ampute an arm or leg if you happen to get in the way. There are reports around the world of people being " burned" and in the hospital, from Cell phone Li-Ion batteries. Cell phone Li-Ion batteries that are bloated are capable of cutting through the side of an airplane, including the hydraulics, frames, and wiring....\n\nUnfortuneately, in your case, you are forced to just replace the battery pack... do not play with it!\n\nIn the future, you might want to charge the battery as often as you can - the battery WILL remember slowly dying by lack of use. If it is always kept charged, it will last longer. People are lazy and don't bother to charge batteries until they " have to ", and this will shorten the life of any battery.\n\nGood luck
1181375
not that quikly. The flux of the magnet would have to flow in the same direction as the battery to assist the flux that is already flowing from negative to positive. That's why batteries go down by themselves. If you cut a hole in a piece of paper the same size as the battery and put the battery half-way in, put some metal filings around it and you can see the magnetic flux I'm talking about.
541088
I am supposing that you are looking for the specification of ISO 1548:\n\nAbstract.\nIncludes the requirements for these components for use in aircraft electrical systems having voltage and frequency characteristics conforming to ISO/R 222, at any ambient temperature from -65 to +85 degrees centigrade, and all altitudes from 0 to 24 000 m. Gives terminology, requirements for dimensions, current, voltage and breaking-capacity ratings, time/current characteristics and tests.\n\nYou can buy the whole text on the source site.
130352
as stated by Kobe, the chemicals inside the battery cause a "difference in potency" at the end caps of the battery. One cap has a surge of positively charged static, and the other, negatively charged static. This causes that whatever is put close to the battery caps, and is a "good conductor" (not like wood, more like metal), will be driven to let direct current flow through it. This process will last for as long the chemicals inside the battery wouldn't mix all together. The "workload" driving negative surge on one side and positive surge on the other causes chemicals to mix all together. When this comes to happen the battery will stop working.
1066233
Unless they're rechargable batteries no.  If they are take into account if and what water they were exposed to.  Salt water corrodes things so if it came into contact with it just dispose of the batteries.  Battery acid is no fun and ruins clothes and burns like hell.  If it's fresh you have less chance of corrosion.
1009589
The current rating on the battery is higher than the solar cell.  You need to add solar cells in parallel in order to boost you amp load.
40221
Batteries are self-contained chemistry sets, and chilling a battery slows down the reactions within that are slowly breaking down the alkali fluid, thereby preserving the electrical charge longer.\n\nLet's learn about electricity. Electricity is energy released from electrons travelling between atoms. Electrons can travel through any medium (air = lightning, you = electrocution), but they like conductive metals like copper the best, where they travel in a circuit, or a giant circle, between their origin and their destination. Electrons are stored in a battery like a sponge holds excess moisture.\n\nWithin a battery is a chemical (usually an alkali or an isotope-based solution) that retains electrons within like a sponge. Let's just say that battery fluid has properties about it that make it great for retaining excess electrons.\n\nWhen you chill a battery, you slow down the breakdown of the chemical within the battery housing (it will eventually break down into water + a precipitate), thereby preserving the charge that stores electrons. \n\nAnd remember, electrons in motion = electricity.
368255
No , Because inside the battery is acid and this acid makes energy.When the battery is flat the acid is dry so the battery can't make energy.
913090
google it??  I dont think there are any, a 9v battery is not strong enough to be fatal by itself.  actually, maybe i was wrong thinking that, if the darwin awards can be believed.
207368
there is a software called "accumulator training utility". this utility calibrate the "smart chipset" of a notebook battery.\nit does not work for defective batteries, for older and apple notebooks.\n\nhave a look for this utility on ebay in the category notebook batteries.\n\nin my humble opinion this utility is crap, but could work for batteries that have been always decharged only to 50% before recharging again.
457188
There are Lead Acid type, sealed batteries, Nicad batteries etc, describing all here is difclt, try web sites like wikepedia etc
1179766
You could solder onto the positive and negative parts of the battery case 2 wires with a female AC adaptor plug.  Problem is that i have no idea what mA, voltage, wattage, ohms, etc to use there.  Check the battery and look for the electrical information, or check the manufacturer's page for some schematics.  About 3 years ago i ran an old computer that way after the battery died since i didnt feel like roaming the globe for a battery that fit.\n\nYour safest bet is the battery and if it died, replacements are EASY to find on the internet nowadays.
489342
A VRLA battery is a basic lead acid battery and an internal between one or a number of cells will render it useless.  An internal short will prevent that cell from working (will produce no EMF) and so the output voltage of the battery will be reduced by the amount that would be given by that cell.\nBattery no good I'm afraid and no chance of recovering it.\nP.
939377
UPS=uninterruptible power supply =battery backup\n\ninverter=what the other guy said = convert dc to ac = part of a UPS\n\nThe battery of a UPS is direct current (as are all batteries), and the inverter is used to convert that to alternating current for use of devices hooked into the UPS when regular power is lost.\n\nThe inverter also converts AC from the regular power source to dc to recharge the battery.
744915
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.