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Batteries
- What is a Battery?
- How long do batteries last?
Battery Tips

Batteries
- What is a Battery?
  In science and technology, a battery is a device that stores energy and makes it available in an electrical form. It converts chemical energy into electrical energy, producing an electric current when connected in a circuit. The finished battery is an electrically connected group of cells (wired in series) that stores an electrical charge and supplies a direct current (DC). We usually call finished battery as battery pack and unfinished battery is called as cell.
- How long do batteries last?
  The life of a rechargeable battery operating under normal conditions is generally between 500 to 800 charge-discharge cycles. This translates into one and a half to three years of battery life for the average user. As your rechargeable battery begins to die, you will notice a decline in the running time of the battery. When your two hour battery is only supplying you with an hour's worth of use, it's time for a new one.
Battery Tips
- What are the differences between Primary Battery and rechargeable battery?
  A primary battery is not intended to be recharged and is discarded when the battery has delivered all of its electrical energy. A rechargeable battery is a galvanic battery which, after discharge, is restored to the fully charged state by the passage of an electrical current through the cell in the opposite direction to that of discharge.
- What causes short lifetime of battery? How to prolong the lifetime of battery?
  1)Reason:
  a.Charger or electro circuit can't be fit for the battery.
  b.Overcharge and overdischarge, etc.
  c.Battery can't comply with the charging requirement.
  2)Solution:
  a.Use the original charger.
  b.Charge the battery after it automatically powers off , then full charge the battery.
  c.Avoid erroneous usage of battery, such as heavy pressure, short circuit, fall off and so on.
- Why can't the battery be charged? How to solve this problem?
  1)Reason: a.The battery has no voltage. b.There is problem with charger, as it has no output electric current. c.Low charging efficiency due to external cause. 2)Solutions: a.Test whether the charger has voltage and output electric current or not. b.Check if the charger is well contacted with battery. c.Activate the battery with voltage and current 1.5 time higher then the highest ones of battery. (Use this method only when the battery can't be charged.)
- How to care battery and use instructions
  
  * Your new battery comes in a discharged condition and must be charged before use. Upon initial use (or after prolonged storage period) the battery may require two to three charge/discharge cycles before achieving maximum capacity.
  
  * When charging the battery for the first time your charging device may indicate that charging is complete after just 10 or 15 minutes. This is a normal phenomenon with rechargeable batteries. Simply remove the battery from the charging device and repeat the charging procedure.
  
  * It is important to condition (fully discharge and then fully charge) the battery every two to three weeks. Failure to do so may significantly shorten the battery's life (this does not apply to Li-Ion batteries, which do not require conditioning). To discharge, simply run your device under the battery's power until it shuts down or until you get a low battery warning. Then recharge the battery as instructed in your user's manual.
  
  * If the battery will not be in use for a month or longer, it is recommended that it be removed from the device and stored in a cool, dry, clean place.
  
  * It is normal for a battery to become warm during charging and discharging.
  
  * A charged battery will eventually lose its charge if unused. It may therefore be necessary to recharge the battery after a storage period.
- How can I maximize battery performance?
  There are several steps you can take to insure that you get maximum performance from your battery:
  
  * Breaking In New Batteries - new batteries come in a discharged condition and must be fully charged before use. It is recommended that you fully charge and discharge your new battery two to four times to allow it to reach its maximum rated capacity.
  
  * Preventing the Memory Effect - Keep your battery healthy by fully charging and then fully discharging it at least once every two to three weeks. Exceptions to the rule are Li-Ion batteries which do not suffer from the Memory Effect.
  
  * Keep Your Batteries Clean - It's a good idea to clean dirty battery contacts with a cotton swab and alcohol. This helps maintain a good connection between the battery and your portable device.
  
  * Exercise Your Battery - Do not leave your battery dormant for long periods of time. We recommend using the battery at least once every two to three weeks. If a battery has not been used for a long period of time, perform the new battery break in procedure described above.
  
  * Battery Storage - If you don't plan on using the battery for a month or more, we recommend storing it in a clean, dry, cool place away from heat and metal objects. Ni-Cd, Ni-MH and Li-Ion batteries will self-discharge during storage; remember to break them in before use.
  
  * For Notebook Users - To get maximum performance from your battery, fully optimize the notebook's power management features prior to use. Power management is a trade off: better power conservation in exchange for lesser computer performance. The power management system conserves battery power by setting the processor to run at a slower speed, dimming the screen, spinning down the hard drive when it's not in use and causing the machine to go into sleep mode when inactive. Your notebook user's guide will provide information relating to specific power management features.

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