I have been doing a thing that know knowledge about battery.I think everyone ever use battery,but i believe only few people know knowledge about battery.

Showing posts with label batteries. Show all posts
Showing posts with label batteries. Show all posts

Friday, 20 June 2008

All batteries manufacturer--laptop, Camera, Camcorder, two-way radio, pda...


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Via from [ All-batteries.co.uk ]

Sunday, 16 September 2007

Digital Camera

Now digital camera is very useful for everyone.We always go holiday with it.What is it?How does it work with digital camera battery?
A digital camera is an electronic device used to capture and store photographs digitally, instead of using photographic film like conventional cameras, or recording images in an analog format to magnetic tape like many video cameras.

Digital cameras can be classified into several categories:
Video cameras,Live-preview digital cameras,Compact digital cameras,Bridge cameras,Digital single lens reflex cameras,Digital rangefinders,Professional modular digital camera systems...

For us,the important is batteries:
Digital cameras have high power requirements, and over time have become increasingly smaller in size, which has resulted in an ongoing need to develop a battery small enough to fit in the camera and yet able to power it for a reasonable length of time.
Essentially two broad divisions exist in the types of batteries digital cameras use.

Off-the-shelf
The first is batteries that are an established off-the-shelf form factor, most commonly AA, CR2, or CR-V3 batteries, with AAA batteries in a handful of cameras. The CR2 and CR-V3 batteries are lithium based, and intended for single use. They are also commonly seen in camcorders. The AA batteries are far more common; however, the non-rechargeable alkaline batteries are capable of providing enough power for only a very short time in most cameras. Most consumers use AA Nickel metal hydride batteries (NiMH) (see also chargers and batteries) instead, which provide an adequate amount of power and are rechargeable. NIMH batteries do not provide as much power as lithium ion batteries, and they also tend to discharge when not used. They are available in various ampere-hour (Ah) or milli-ampere-hour (mAh) ratings, which affects how long they last in use. Typically mid-range consumer models and some low end cameras use off-the-shelf batteries; only a very few DSLR cameras accept them (for example, Sigma SD10). Rechargeable CR-V3 lithium-ion batteries are also available as an alternative to non-rechargeable CR-V3 batteries.

Proprietary
The second division is proprietary battery formats. These are built to a manufacturer's custom specifications, and can be either aftermarket replacement parts or OEM. Almost all proprietary batteries are lithium ion. While they only accept a certain number of recharges before the battery life begins degrading (typically up to 500 cycles), they provide considerable performance for their size. A result is that at the two ends of the spectrum both high end professional cameras and low end consumer models tend to use lithium ion batteries.

 
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