● lead acid battery charging, the positive plate is lead dioxide (PbO2) in sulfuric acid solution under the action of water molecules, a small quantity of lead dioxide and water generates dissociation of unstable substances – lead hydroxide (Pb (OH) 4), hydroxide ions in solution, ions lead (Pb) remain in the positive plate, so the lack of positive results on the electronic board. .

● lead acid Dell FK890 battery charging, the negative plates of lead (Pb), and the electrolyte of sulfuric acid (H2SO4) react to become lead ions (Pb 2), transfer of lead ions to

Electrolyte, the cathode board leaving excess

Both e-(2e).

● Thus, even when not connected to external circuit (battery

Open), due to a chemical reaction, positive plate

On the lack of electronics, a very fu on the electronic board redundant

As seen on the right, the bipolar plate, seen rising

A certain potential difference, which is battery

Momentum.

2, lead acid batteries during discharge of the electro-chemical reaction

● Lead acid batteries discharge when the potential difference in the hp Pavilion dv6 battery under the influence of a negative amount on board electronic form through the load in the positive plate current I. At the same time a chemical reaction in the battery.

● Each negative plate of lead atoms emit two electronics, the generation of lead ions (Pb 2) and the electrolyte in the sulfate ion (SO4 ֿ ²) reaction in a very on-board generation Lead insoluble in sulfuric acid (PbSO 4).

● positive plate of lead ions (Pb 4) obtained from the negative of the two electrons (2e), the lead ions in divalent (Pb 2) and the electrolyte in the sulfate ion (SO4 ֿ ²) reaction in the very edge to generate insoluble lead sulfate (PbSO 4). Hydrolysis of a positive plate of oxygen ions (O ֿ ²) electrolyte and hydrogen ion (H) reaction to form a stable material and water.

● electrolyte exist in sulfate ions and hydrogen ions in the evolution of the electric field under the action of the battery positive and negative, respectively, formed within the battery current, the formation of the whole loop , batteries continue to discharge outdoors.

● landfill reducing the concentration of H2SO4 is sulfuric acid on lead electrode negative (PbSO 4) increased resistance increased internal toshiba PA3591U-1BRS battery (non-conductive lead sulfate), concentration of electrolyte decreased the battery EMF reduction .

● chemical reaction equation is:

Cathode active material cathode material anode electrolyte active negative result resultant resultant electrolyte

↓ ↓ ↓ ↓ ↓ ↓

PbO2 2H2SO4 Pb → PbSO 4 2H2O PbSO4

Lead oxide sulfate sulfuric acid Lead acid Lead

3, the lead acid battery charging process of electro-chemical reaction

● prosecution should have run off in the external power supply (charging rectifiers or pole) so that positive and negative plates in the discharge of substances released after restoring the original active substance, and the power of the outside world storage of chemical energy.

● In the positive plate in the current role of the outside world under the lead sulfate is dissociated in divalent lead ions (Pb 2) and sulfate anion (SO4-2) external power supply due to continuous positive lessons electronics then the positive plate in the vicinity of free divalent lead ions (Pb 2) continue to release two electrons added by tetravalent lead apple PowerBook G4 15 inch battery ions (Pb 4), and with water to continue to meet and, ultimately, the board has generated a very positive lead dioxide (PbO2).

● In the negative, the current role of the outside world under the lead sulfate is dissociated in divalent lead ions (Pb 2) and sulfate anion (SO4 ~ ²), because of the constant access to negative power electronics from the outside, then the negative near the free divalent lead ions (Pb 2) has been in and lead (Pb), and velvets, as wireless is set to negative.

● electrolyte, cathode continuous generation of hydrogen ions (H) and sulphate (SO4 ~ ²), produced a constant negative sulfate ions (SO4 ~ ²), under the influence of the electric field, hydrogen ions move to cathode, sulfuric acid ions move toward the cathode to form a current.

● late charge under the influence of the external current solution in the reaction of water electrolysis will occur.

● chemical reaction equation is:

Material of cathode and anode and cathode electrolyte electrolytes resulting resulting resulting negative

PbSO4 2H2O → PbSO 4 Pb PbO2 2H2SO4

Lead sulphate, lead sulphate lead sulphate lead oxide

4, after loading / unloading lead-acid electrolyte in the battery changes

● From the above we can see that discharge lead acid batteries, the electrolyte of sulfuric acid in steady decline in water gradually increased, the solution has decreased.

● From the above we can see that the lead-acid battery charging, increasing the electrolyte of sulfuric acid, water, decreased the proportion of increase of the solution.

● practical work, you can change depending on the proportion of electrolyte to determine the extent of lead-acid battery charging ..

The use of lithium batteries should be noted that after some time the battery is placed into hibernation, lower than normal capacity at this time, the use of time has also come to shorten. However, lithium batteries can easily activated, as after 3-5 times the normal charge-discharge cycles the Laptop battery can be activated to restore normal capacity. As the characteristics of lithium, its decision is almost no memory effect. The lithium battery so that the new user during the activation process does not require methods and special equipment. Not only is the theory that, from my point of view practice from the start on using the standard method of charging that “activation” is the best approach.

For the lithium battery “activate” problem, many say, is the cooldown should be longer than 12 hours, three times in order to activate the battery. This “The first three load over 12 hours to charge” was obviously the nickel battery (such as nickel-cadmium and nickel metal hydride) inherited from the argument. Therefore, this argument can be said that the beginning a miscommunication. Lithium batteries and charge the battery nickel and discharge characteristics are very different but also very clear to you that I have gone through all the serious official stressed that the technical information and charge-off will discharge lithium batteries, especially lithium liquid Ion causing major damage. According to the standard load and therefore the best time and the standard method of pricing, in particular, do not make more than 12 hours of ultra-long burden.

In addition, lithium batteries or charger stops automatically when the IBM 40Y6799 battery is fully charged, there is no electricity nickel charger for 10 hours the so-called “trickle” charge. In other words, if your lithium batteries in full, on the white horse is also sufficient. And we can not guarantee that no one battery charge and the circuit characteristics of discharge protection and will never change and the quality of the safety device so that your battery will be of long duration space flight hazard. There is also another charge against the main reason.

In addition, in some machines, charging more for some time, if they do not remove the charger, this time not only to stop charging system will start to discharge – charge cycle. Perhaps the makers of this approach have its own purpose, it is clear that in terms of battery life is a drawback. At the same time, charging time would take some time, often at night, but our situation to the electricity grid at night in many places, over voltage, but also volatile. As already said, the lithium batteries is very precious, and more than nickel in the electric charge and discharge aspects of fluctuations in the resistance is much less, if this brings additional risk.

In addition, another aspect can not be overlooked is the lithium Dell Inspiron 9300 battery is not appropriate for excessive discharge, excessive discharge of lithium batteries is also very unfavorable. This leads to the following questions.

2, normal use should be time to start charging

As the number of charging and discharging is limited, must be used as possible, recharge the electric battery. But I found one on the charge of lithium-ion battery and Table discharge cycle test, data life cycle is as follows:

Cycle (lifetime 10% DOD) :> 1000 times

Cycle (lifetime 100% DOD) :> 200 times

DOD is the depth of discharge whose English acronym. Can be seen from the table in May of depth charge and discharge times, 10% DOD cycle life when the DOD of 100% for much longer. Of course, if the equivalent of actual costs to the total capacity on 10% * 1000 = 100100 * 200% = 200, one full charge and discharge, or better than some, but not before friends say some changes: Under the normal case, you should have a standby hp Pavilion dv6 battery power is left in accordance with the principle of charging the short load again, but if your battery in your first two days can be expected to persist throughout the day, when they should start on time charge, of course, if you’re willing to back the charger to the office again a different issue.

And you need to recharge in order to cope with the communication provided lead busy to come to an important event, even if a lot of battery power over time, then you just charge ahead, because you don ‘are not really lost, “as a” life cycle support is “0.x” times only, and that x is often very low.

Short on battery and then filling the rest of this principle is that you want to go to the extreme. And long as charging a widespread view that “as far as possible from the machine run out of battery, it is preferable to use automatic shutdown.” It’s really just practice for nickel, the goal is to to avoid the memory effect occurs, unfortunately, it is also spread of lithium batteries on this. It was because the machine is too low sony VGP-BPS2 battery warning appears, still do not charge to continue using the example has been used in automatic shutdown. The results of this case, the machine later in the pricing and first there was no response, had to review services to clients. In fact, because of the battery caused by excessive discharges of electricity at low voltage, so that was not the normal load and footwear and conditions.

3, the correct way for lithium batteries

To summarize, the use of lithium batteries for loading and unloading, the most important recommendations are:

a, in accordance with the standards and procedures, charging time, even the first three have to do;

b, when there is low power consumption machine when prompted, should try to start charging a timely manner;

c. lithium batteries do not need to activate a special mode in normal use, the machine will naturally activated in lithium batteries. If you insist on spreading the use of “three previous 12-hour long activation charge” approach, in fact, there will be no effect.

Therefore, the pursuit of all super-long 12-hour rechargeable lithium batteries used and the integration of the practice of automatic shutdown are wrong. If you’ve already done under the argument wrong, please correct time, perhaps not too late.

4, the use of lithium fire

Some people may experience from mobile phones began to lithium batteries. In fact, it is used in household appliances. Needless to say that the lithium apple A1061 battery efficient, lightweight, and if its benefits are open to promote the use of quickly. But, you know, wasting, it will cause you to “fire” of the upper body?

Lithium batteries have a light body, high efficiency, low temperature (-40 ℃), etc., 0.3 mm thick buffer size lithium battery can be used continuously for more than five years in recent years are being phased out are used in batteries and alkaline manganese batteries, widely used in many high-end devices for home and mobile handsets.

Unlike lithium batteries are used in batteries and alkaline manganese dry zinc chloride and aqueous potassium hydroxide electrolyte, which use an organic solvent. Lithium use cathode of manganese dioxide, lead fluoride, thionyl chloride and other materials. Anode used in the anode of lithium metal foil with the general use batteries of zinc chloride versus the ionisation tendency of strong difference, positive and negative high voltage, so that the improvement work effectiveness of lithium batteries.

However, lithium batteries are often in the course of fever, burning phenomenon, the impact of light by the host to be used in severe cases will also cause a fire burned the host. It is reported that Japan has in recent years there have been several cases of Li-ion battery heat caused by the family fires burning.

Why lithium batteries fever and burning? Most materials original lithium battery in contact with water, after severe chemical reaction can occur, releasing a huge amount of heat leading to fever, the phenomenon of burning. Manganese dioxide lithium battery cathode, only a small drip can dive phenomenon of fever. Lithium-thionyl chloride in contact with water in the production of hydrochloric acid and sulfur dioxide, while the heat, several factors make life lithium batteries to become the “go” and So people are using lithium batteries should pay attention to water-proof, anti – wet. A variety of home disabled, they should remove the batteries placed in a dry, cool to care, to prevent and avoid inappropriate use of lithium battery fires caused by household accidents.