Flashlight Battery
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Flashlight Battery
The battery factors you should pay attention when buying a battery
Batteries are all over the place — in our cars, our PCs, laptops, portable MP3 players and cell phones. A battery is essentially a can full of chemicals that produce electrons. Once your laptop battery dead, you should buy a new one, Most people who is not good at battery selection and need a good advice. This article written by www.power-depot.co.uk with the selection criteria.
The following points should play a role in the battery selection:
* The volumetric energy density (Capacity). This value indicates how much electrical energy a Dell hd438 battery Wh per volume (e.g. liters) can deliver.
* Maximum discharge current. This value plays a role for electrical equipment that need a short period of high power demand.
* Maximum discharge volt . This value plays a role for electrical equipment that need a high voltage to run.
* The weight and shape of the battery. The battery should have a shape that fits into the screwdriver.
* The memory effect in nickel-cadmium Dell d5318 batteries or battery inertia effect for nickel-MH battery. These effects are dependent on the loading and unloading. Further more, this leads to significant reductions in capacity and voltage.
Here is a list of battery types and their associated applications:
* Li-polymer Dell vostro 1710 battery for mobile phone
* NiMH rechargeable batteries for devices with constant current
* Li-ion batteries for portable electronic devices with small size and long operating time
* Lead-acid Dell latitude d630 battery for internal combustion engines
* Ni-Cd rechargeable batteries for portable electronic devices with short periods of high power consumption
*Alkaline batteries are used for clocks and remote controls .
If you look at any battery, you'll notice that it has two terminals. One terminal is marked (+), or positive, while the other is marked (-), or negative. In an AA, C or D cell (normal flashlight batteries), the ends of the battery are the terminals. In a large car battery, there are two heavy lead posts that act as the terminals.
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Consider a pair of flashlight bulbs connected to a battery.?
will they glow brighter if they are connected in series or in a parallel?
Will the battery run down faster if they are connected in series or in parallel?
They will glow brighter when connected in parallel. The battery will also run down faster when the bulbs are connected in parallel.
No Battery Flash Light