subject: Ni-MH batteries (NIMH) is a modern electronic products [print this page] Recently found that many of my friends asked the battery, especially novices, on the camera's battery is not fully understand. To this end, his understanding and grasp of the battery was out of battery knowledge to share with our DX laptop batteryACER Laptop Battery .
Common digital camera battery into lithium-ion batteries, nickel hydrogen batteries, nickel-chromium batteries, alkaline batteries, etc ... Since most digital cameras use AA Ni-MH battery power to do so in this article to AA-type Ni-MH battery is about the focus .
1, Ni-MH battery features:
Ni-MH batteries (NIMH) is a modern electronic products, the most widely used one of the green cells with single large capacity, discharge characteristics of a smooth, versatile, heat a small and so on. Drawback is bulky, its great weight.
Ni-MH battery nominal voltage 1.2V, the case of the fully charged up to 1.35V, and the general AA type alkaline battery voltage is similar to, basically interchangeable, nickel hydrogen battery discharge characteristics are very good, very smooth discharge curve, consumption of electricity is about to complete, the voltage suddenly drops, it is close to nickel-chromium batteries, but not as good as instantaneous discharge current of nickel cadmium batteries. In addition, the nickel-metal hydride batteries used mercury-free design, which is of great significance for environmental protection.
3, Ni-MH battery structure:
AA Ni-MH battery with the same shape as ordinary AA batteries. As with the nickel-chromium batteries, nickel metal hydride batteries used reversible chemical reaction to achieve the charge and discharge process. Therefore, charge and discharge process, the battery will have a lot of gas inside the battery internal pressure is relatively large, therefore, nickel-metal hydride batteries are used in the design of the exhaust vent to prevent excessive internal pressure due to the explosion. Currently we have contacts with GP series battery, why not see the vent, because the battery installed at the top of a circular plastic plate, to prevent blockage and prevent the cathode vent cap shell with negative short circuit.
4, the battery memory effect:
The so-called memory effect refers to the battery Dell Inspiron 4000 battery Dell Inspiron 8200 battery Dell FK890 battery Dell Inspiron 1721 battery charge and discharge process, the chemical composition of cells determined by internal, regional produce in a chemical reaction can not continue the phenomenon. With one example: When a battery is fully charged, it can be a continuous electrical discharge 60 minutes. Now we use this section to discharge the battery on the electric discharge to 30 minutes to stop, and then charge the battery in this section, is charged to continue to discharge after the 30 minutes are not completely discharged each time, after N repeated operations This cell will have a memory effect, in the future use of the process, after 30 minutes when the battery discharges, the output is no longer current, and that is, the capacity of this cell was reduced by half. Of course, we now use nickel-metal hydride batteries generally this phenomenon does not occur, because the chemical composition of nickel-hydrogen batteries and nickel cadmium batteries for different. Nickel-cadmium batteries for the memory effect is very serious. Here to recommend
Qi source of liquid crystal display power charger, can be a single charge and discharge Click to view
Ni-MH batteries (NIMH) is a modern electronic products
