Digital camera is more and more used in our lives.To get the most efficiency and speed out of your digital camera, you need a high-powered battery. Though many digital cameras will take low-cost AA or AAA alkaline batteries, they're not recommended for regular or extended use because of their short life span. Digital cameras use a high level of charge to run well, and alkaline batteries will drain in a single shooting session. For optimal performance, use an efficient rechargeable battery with a high power rating, also called the mAH rating.
In some cases, a camera requires a battery pack specially designed for it called a proprietary battery. Proprietary batteries are rechargeable, but keep a spare pack on hand. These special batteries are sometimes expensive, but are usually the most efficient -- and in some cases, the only -- choice for certain cameras. Most proprietary batteries for digital cameras consist of a customized lithium ion.
Lithium batteries are disposable like alkaline batteries, but they have a much higher mAH and more efficiency. A faster, rechargeable type of lithium battery is the lithium ion, or "lion" battery. Lion batteries charge quickly and are significantly more expensive.There are some kinds of canon camera battery:canon nb-4l battery、Canon NB-7L Battery.
Nickel-Metal Hydride, or NiMH batteries, are rechargeable, fast and long-lasting. This type of battery has largely replaced the nickel cadmium rechargeable battery for digital cameras because of its speed and because it has fewer charging issues. NiMH batteries are easier to find and are less expensive than lion batteries, making them a popular choice for many general-use digital cameras.
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