Used a digital camera knows that digital cameras power consumption is particularly high, because digital cameras are now more electronic circuits, such as the LCD viewfinder, memory storage unit, CCD sensor devices are all power-hungry digital camera battery they have to rely on battery power required to supply, digital camera battery is the source of power. So we have to correct selection and use of batteries.

Currently most digital cameras use batteries are alkaline batteries, rechargeable nickel-cadmium batteries, nickel metal hydride rechargeable batteries, lithium ion batteries and battery packs. Below we describe the characteristics of these cells.

1. Alkaline batteries Alkaline batteries for use in daily life is very wide, it can Walkman, MP3 and other digital products to show their talents, but the batteries in digital cameras use a very short time, although its cost is relatively low , but may not be cost-effective long-term used in digital cameras. It is characterized by: in the course of the battery voltage will gradually drop. If you have a mechanical drive, zoom, flash and configuration of LCD screens used in digital cameras, this alkaline batteries, the voltage during the shoot will become insufficient to reduce to a certain extent, even if the battery capacity there is a surplus, the battery can not continue to use. Alkaline batteries can travel can not be charged in the case of a emergency use.

2. Nickel-cadmium rechargeable batteries Ni-Cd (Nickel Cadmium) rechargeable nickel-cadmium batteries on the mark for the Ni-Cd, it is resistant to the strength of the charge, and relatively inexpensive. Nickel-cadmium rechargeable batteries can provide a larger current, and can charge and discharge more than 300 ~ 800 times in 500 times charge and discharge the capacitance will decrease only to about 80%. This battery is used a few years more. But its drawback is obvious: first, the memory effect significantly. If you do not pay attention to tips and timely discharge, the battery will soon have the memory effect, making the capacity of smaller, impact on use; second in charge and discharge, the cathode, president of the needle-like crystals of cadmium, sometimes through dividers and caused by internal dendrite-like short-circuit; third, the use of cadmium batteries are toxic heavy metals, recycling of used batteries if you do not cause environmental pollution. Nickel-cadmium rechargeable batteries which now has gradually withdrawn from the market.

3. Ni-MH rechargeable batteries NiMH (Nickel-Metal Hydride) NiMH rechargeable battery is mainly to replace the nickel-cadmium batteries are designed. Ni-MH battery using nickel oxide as the anode, and hydrogen absorption metal alloy as the cathode. Because of this alloy can absorb up to 100 times its own volume of hydrogen, storage capacity is extremely strong. Ni-MH battery energy density than nickel-cadmium batteries large capacity of about twice the nickel-cadmium batteries. NiMH rechargeable battery raw materials do not contain mercury, cadmium and other toxic heavy metals, which are very environmentally friendly. In addition, the NiMH rechargeable battery memory effect is not obvious, do not deliberately discharge to ensure that the battery capacity, have more peace of mind to use nickel-metal hydride rechargeable battery life is generally longer than the nickel-cadmium rechargeable batteries 40%. These outstanding features make the nickel-metal hydride rechargeable batteries has now become one of the mainstream digital camera battery. Disadvantage is that depth of discharge, resistance to overcharge and over discharge, 100% depth of discharge at up to 500 times more than under the charge and discharge cycles. Therefore, the battery charger must be switched off, otherwise easily lead to cell damage, so can not use ordinary nickel-cadmium battery charger. In addition, the NiMH rechargeable battery size and weight compared with the lithium ion battery, some too large, is not conducive to compact digital cameras.

4. Lithium-ion battery (Li-lon Battery) Lithium-ion battery is the youngest of the digital camera batteries, lithium ion batteries and lithium batteries, like other high-voltage capability with output voltage range between 3.0 ~ 4.0V, but it is safer than lithium electronics, because in the state so the use of lithium ion, lithium-ion battery has no flow of liquid electrolyte, but instead conductive polymer electrolyte. Compared to the previously mentioned types of batteries, lithium-ion battery with discharge voltage, capacity, operating temperature range, low self-discharge, long shelf life, no memory effect and no environmental pollution, etc., is a very good one kinds of energy. For digital cameras, lithium-ion battery is two important advantages: You can create resistance and light weight. The appearance of plasticity makes the digital camera is not subject to the battery size, can do much more compact; light weight digital camera can make better portability. The main disadvantage of lithium-ion battery is short-lived, charge and discharge is generally about 300 times, the other is the higher prices.

5. Battery pack using a digital camera knows to use alkaline batteries or Ni-Cd Ni-MH rechargeable batteries have certain restrictions, if a digital camera is compatible with alkaline batteries and NiMH rechargeable batteries, then always use alkaline battery costs will be higher, but also to maintain the shooting time is not long, if you use nickel-metal hydride batteries, even though the shooting time has increased, but the charging process takes a long time, but travel there is always inconvenient when charging where, if the camera is using a dedicated battery, the one dedicated battery prices are generally more expensive, in addition to purchase up to put too much, two encounter an emergency situation it is difficult to replace with another battery. Samsung Digimax digital camera battery pack dedicated to bring us new hope emerged. Samsung SBP-3606 battery pack charging time 90 minutes, but its performance is GP Ni-MH rechargeable batteries 3 ~ 4 times more than the original nickel-metal hydride batteries, Nissan is also higher than more than doubled. Able to use the digital camera battery pack can receive 6V DC IN power input, the other condition is that the interface size, as long as three data lines for any one you can use SBP3606 battery pack. The above description of several common digital camera battery is the battery type, the case of funds, we'd better buy original batteries, because some digital cameras to consider compatibility issues, some batteries can not be decoded, can not be in the new digital cameras use, so choose the best time to bring the battery to go and try to buy a digital camera.