Feb 24
2010

Lithium-ion battery has the following advantages:

  1. High voltage, voltage of single battery go up to 3.6-3.9V,and it is 3 times than a Ni-Cd, Ni-H batteries ,such as Dell inspiron 6000 battery .
  2. Larger specific energy , at present real energy is 100-125Wh/kg and 240-300Wh / L (2 times higher than Ni-Cd, 1.5 times higher than Ni-MH), the future, as technological development, specific energy up to 150Wh/kg and 400 Wh / L
  3. Long cycle life, in general, Lithium-ion battery can reach more than 500 times, or even 1000 times or more. For a small electrical current discharge, the battery will double the lifespan of electrical appliances competitiveness.
  4. Safety performance is good, and pollution-free, no memory effect. like the Dell inspiron 6400 battery . As the predecessor of Li-ion batteries, the formation of lithium dendrite easy to short-circuit reduce its application areas: Li-ion does not contain cadmium, lead, mercury and other elements of the environment pollution: Some processes (such as sintered) and Ni-Cd batteries there is a major drawback for the “memory effect”, seriously hindered the use of batteries, but Li-ion does not exist at this problem.
  5. Self-discharge is small, after full of electricity at room temperature Lithium-ion battery is storaged for a month ,the self-discharging rate is about 10%, much lower than Ni-Cd of 25-30%, Ni, MH 30-35%.
  6. Can quickly charge and discharge,for one thing ,the Fujifilm np-40 . 1C charging capacity can reach more than 80% of the nominal capacity.
  7. Operating temperature range is high, operating temperature is -25 ~ 45 ° C, with the electrolyte and the positive improvements, it is hoped to broaden the -40 ~ 70 ° C.

Lithium-ion batteries also exist some disadvantages, such as:

  1. Battery costs are higher.take the Fujifilm np-100 battery for example. it mainly reflected in the price of LiCoO2 cathode materials for high-(Co resources to small), electrolyte purification system difficult.
  2. Not high-current discharge. As the organic electrolyte system, and other reasons, the battery internal resistance is big ,compared to other type of batteries. Therefore, I demand a smaller discharge current density, the discharge current at 0.5C below normal, only suitable for small and medium-current electrical use.
  3. Iit need to protect line control.
  • Overcharge protection: Battery over charging would undermine the positive structure, for one thing ,the Dell inspiron e1505 battery . which affects the performance and life; the same time, the overcharge to the electrolyte decomposition, excessive internal pressure caused by leakage and other problems; and therefore must be under constant pressure 4.1V-4.2V charge;
  • Over-discharge protection: over-discharge recovery of active substances will cause difficulties, they also need protection circuit control.

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Feb 21
2010

  1. To buy cell phone Dell inspiron 630m battery in the formal business units as far as possible , and at the time of purchase requests issued merchants marked with the battery brand, model, serial number of the invoice. In this way, Once a battery purchased counterfeit products, you can negotiate accordingly to the relevant departments to solve.
  2. Domestic battery clearly marked with product identification applications in Chinese name and address and battery name, model, rated capacity, rated voltage, manufacturing date, warning signs and so on. If the product ID does not meet standards, such as cell phone Dell inspiron 6400 battery your best not to buy.
  3. Testing whether mobile phone battery manufacturers anti-counterfeiting labels.

    4. For example stickers hidden under the ramp NOKIA printed word is one trick. Flawless is a clear and original products; eclipse counterfeit products. If you look closely, it may find manufacturer’s name. For example, batteries for Dell inspiron 640m battery and its anti-counterfeiting trademarks are diamond-shaped, and whether from any point of view, can be flashing a three-dimensional effect, while Dell, Original and printing and clear, then it is genuine. On the contrary, once the color of dark, three-dimensional feeling inadequate, vague words, there may be fakes.

  4. Each with original equipment batteries have a unique serial number, that is, you are in the selection of the battery, if the Dell inspiron 700m battery was found a few marked with the same serial number, you can conclude that these products are fake.
  5. Original nickel-metal hydride batteries are precision plastic laminated mold, and is a shape, appearance and tidy, no burr, the battery should not have to open the edge of the scene.
  6. Lithium-ion Dell inspiron 700m battery fully charged before use of time is about 1.5 times that of NiMH batteries are nickel-cadmium battery 3.0 times. Therefore, the battery capacity the same circumstances, the lithium-ion battery than the nickel-metal hydride batteries smaller and lighter.
  7. Observe the distinction between authenticity of the package. Original parts used in all heat seal technology, a one-time sealed package, non-original parts are usually not packaged or only simple packaging.
  8. see plastic surfaces and plastic materials. Genuine battery wear uniform surface, using the PC material, no embrittlement phenomenon; counterfeit Dell inspiron 710m series battery without wear or too rough, using a renewable material, easy to embrittlement.
  9. Original battery shell material strong, difficult to damage, generally means difficult to open the battery. For the original battery, its battery surface color texture clear, uniform, clean, no obvious scratches and damage
  10. Battery metal contacts the color may be different. Original color of the Dell gd761 side contact metal deep, counterfeit batteries partial light metal contacts. And the original batteries are not reflective metal contacts. This can be seen in the lighting, fake batteries are reflective with a high degree.
  11. Loaded onto cell phones and cell phone to see the degree of fit with original equipment Dell inspiron 710m battery and fuselage commissure very good, and the colors are basic and there is no significant difference between the mobile phone.

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Feb 8
2010

The so-called direct methanol fuel Dell vostro 1500 battery (Direct Methanol Fuel Cell) belongs to the proton exchange membrane fuel cell (PEMFC) in one of the categories, the direct use of aqueous solutions of methanol as fuel and steam supply source, through the restructuring of devices without having to re-methanol, gasoline and and then remove the hydrogen such as natural gas for power generation. Compared to proton exchange membrane fuel akku (PEMFC), direct methanol fuel cell (DMFC) low temperature of Health electricity, fuel components and battery low-risk features such as simple structure, so that direct methanol fuel laptop battery (DMFC) portable electronics applications may be mainstream.

Direct methanol fuel cell is a proton exchange membrane fuel cell as a variant of the use of methanol directly rather Needless to pre-restructuring. Methanol at the anode into carbon dioxide, proton and electron, as the standard proton exchange membrane fuel Dell vostro 1400 battery , as protons through the proton exchange membrane and oxygen in the cathode reaction of electrons through the external circuit to reach the cathode, and doing work.

The expectations of the Dell latitude d830 battery operating temperature is 120 ℃, it is slightly higher than the standard proton exchange membrane fuel cell, its efficiency is about 40%. The disadvantage is that when low-temperature methanol is converted to hydrogen and carbon dioxide than when the conventional proton exchange membrane fuel cells need more platinum catalyst. However, this increase in costs can be due to easy access to liquid fuels and will be able to work on the revitalization Needless to dwarfs. The use of direct methanol fuel Dell latitude d820 battery technology is still in its early years of development, it has successfully demonstrated can be used as mobile phones and laptop computers power supply, the future for a specific end-user also has the potential to use.

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