how do batteries give energy?
358273
http://www.howstuffworks.com/battery.htm
112178
no, It merely helps to conserve the the battery.  Even you you freeze it to near absolute zero, batteries typically aren't made of superconducting materials so there would be no beneficial effect.\n\n^^
354850
No. Recharging just re-polarizes the terminals.\n\nThe energy added to the system is used to push the electrons, or holes back to the end where they started when the battery was originally delivered to you.
809942
Here is an idea.\nCompare power supplies by weight, volume and power density using various batteries.\n\nThere are many batteries on the market now, so it might be very educational for you and anyone looking at your project.\n\nConsider using the following batteries:\nLead acid battery\nLithium-ion battery\nLithium ion polymer battery\nNickel-cadmium battery\nNickel metal hydride battery\nMolten salt battery\nSilver-oxide battery\nWater-activated batteries used in radiosondes\n\nYou could compare different AA batteries of different types and costs.\n\nA good starting point for references on batteries is on Wikipedia:\nhttp://en.wikipedia.org/wiki/Batteries\n\nYou might even be able to get a small prototype fuel cell if you ask to work with a battery manufacturer, a research company, or someone like NASA.\n\nYou should start thinking of what kind of a hypothesis you could write to kick of the experiment.  Hint: Don't worry if your experiment fails and you fail to prove your hypothesis. Sometimes the best experiments are failures!\n\nHope this helps!
936680
1.)   The battery contains 4 amp hours of electrons.  This means it can be drained at the rate of 1 amp per hour for 4 hours.\n2.)   So, if you are only draining it at the rate of 1//4 amp per hour it will last 4 times as long or 16 hours.\n3.)   Just think of a battery as a bucket full of water e.i. The slower you pour it out the long it lasts.
762945
Rechargeable batteries.
1018390
The cells of our body are very much like the recharable batteries that we use. Only, our cells dont need electricity to recharge.  A part of the cell called mitochondria starts producing energy by utilizing the O2 that we breath. This is a continuous process, but since when we are awake, we expend more energy physically and mentally, than is produced, the cells get "discharged" after about 18 hours of wakefulness. Hence, the body slips into energy-saving mode, i.e., sleep mode, the energy produced in this period of sleep recharges the cells and 6-8 hours later, we're all charged up and refreshed. \n\nAlthough, you "rested" physically, you were still awake. Your brain was definitely at work using up precious energy that was already reaching rock-bottom levels. Hence, once that residual energy got over, you would need to sleep and get recharged.
167146
turns light into energy.\n\ncharge a battery for free
40675
The source of energy is food. Food is digested, giving you energy.
824113
Yup,\nDepends on the type of batteries (AA, C, or D) and how they are wired together series, parallel or a combination.  Most batteries are 1.5 V per cell.  If they're in series, add the voltage, if they're in parallel, they're there for available current or increased battery life.  The gadget may have some name plate data on the box or the device that says what the voltage and current requirements are.\n\nAnyhow a trip to Radio Shack and a little bit of wiring is all you need.  They have a couple of universal AC to DC transformers you can plug into the wall.
869505
If you place the batteries in series, you get more voltage (the sum of the individual battery voltages), but the current capacity remains the same.  If you place them in parallel, you likewise increase the current capacity, but the voltage stays the same.
386110
Solar cells convert the solar energy into elctricity and this electrical energy can be used for cooling
951632
Imagine that a battery is the equivalent of putting up a rock up one step in a stair, as the potential increases.  With batteries in series, you go one step, then another, then a 3rd, so in the end you have your rock 3 steps higher.\nNow with the batteries in parallel, you take one rock and take it one step up, then you take ANOTHER rock and put it one step up, and a 3rd; so you have 3 rock one step up, instead of one rock 3 steps up.\nThe amount of work is the same in both cases, but something was traded: in the case of electricity, voltage is traded for potential intensity (amperage).
86147
Heat energy.\n\nThere is water (or a water mixture) cooling the core directly.  This water is radioactive.  You then have coils running in the water which have other water (protected from the radiation) coursing through them.  This water gets the heat transfered to it and turns to steam.  The steam runs turbines that turn a magnet core in the center of a copper coil that in turn produces electricity.\n\nHope this answers it for ya, feel free to email me!
424418
in Solar Battery!!\n\nmuahahahahahahaha
631579
2 electrodes and a battery
598213
On a battery, you have two terminals- a positive and a negative.  As a result, the net charge is 0.  Also, a battery is the source of 'power' in an electrical circuit, it is direct current (DC) instead of alternate(ing) current (AC).  The battery produces a certain number of Volts and from that, you can find the current at different points in the circuit, as well as the number of amps.  (I hope this is what you are talking about)