Battery Wiki- Laptop battery manifestations and precautions
Battery will be used after a period of time "aging" of the. Specific manifestations of resistance become larger when the voltage across the charging up too fast, so easy to charge control circuit judge to have full capacity will naturally be "down". As the larger battery internal resistance, Bell squ-712 Battery discharge voltage drop, high speed, the system can easily mistaken for a voltage not enough, power is low (in fact there is not power up). As can be seen from the above description of the battery is a vicious cycle of aging process, the discovery of battery time out faster than what it should be tempered, or else will be finished sooner or later.
In addition, many lithium battery failure is the failure of the bag resulting in a saving core, an assumed name or bad a pot of soup. This phenomenon is inevitable, because every energy-saving battery can not be completely consistent with the nature of the core, there are some quality with long aging first weakened, undermining the whole (series) if the discharge curve. It simply means that section of bad batteries before charging full, discharge it first had finished, but this time the capacity of other batteries are not being fully utilized. Core of a saving over charge / over discharge will not cause the battery monitoring circuit that is full / End of release. For example, when charging other batteries began charging close to full pressure of time, that section of bad batteries may have to 4.30V or even higher voltage, resulting in overcharge damage, while others are fully satisfied. Editor's Note: The internal batteries for battery damage, the "China Computer Education," 2001 No. 2 has a great article - "laptop battery DIY" worth learning. Interest, courage and ability friends can try to open the battery pack, believe in the multimeter's help, Hp presario cq32 Battery you can quickly find the damaged batteries (abnormal voltage). If conditions permit, according to the corresponding parameters of batteries can replace the qualified product.
Battery charge and discharge
Lithium-ion battery charging, first by way of constant current fast charging, the voltage reaches a certain value and then to constant slow charge mode. Usually laptops are not strictly constant current charging control device. When the system load large charge current to a small, contrary to large, the current from the AC power adapter power margin decision. Clearly, the system will charge the battery and other components, such as CPU, hard drive, LCD and other competing energy sources. I tried to run side Superπ, while charging the way, found that the charge current between the change in the 0.70 ~ 1.70A, can not meet the requirements of lithium-ion rechargeable battery, so I worry that this work will charge the battery has been damaged. IBM statement on the requirements of the notebook computer will not operate when charging is probably the reason.
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Charge at boot time, if we can select the charge mode, do not select the fast charge mode (Express charge mode), to avoid premature battery "full." There is a time of low battery prohibit the use of the highest performance CPU to reduce power struggle. If the notebook uses the CPU to support SpeedStep technology, it is best to install the driver (responsible manufacturers are installed) to facilitate the adjustment performance. SpeedStep program icon is a blue flags, right-click performance tuning options it can occur. In Windows XP systems, SpeedStep program will be problems, this time modify the BIOS parameters, or to rely on a number of brand-specific regulatory procedures, such as the IBM notebook computer is very powerful tool.
Lithium has been switched on or discharge, let it discharge better. Best not to use physical methods (like the string of resistors). This is not to say no, only relatively large risk, if the internal protection circuit not working, then the battery on the void, and the worst is probably the battery explosion, of course, this is unlikely. Circuit hidden danger is not impossible, some big companies have found that the design of the potential risk factors than the battery recall, as when cell phone battery explosions do not hear about the.
Tips: In general, the protection of laptop battery is a voltage regulator circuit components are usually block, control chips, insurance, and temperature probes. Temperature protection device is usually one-off, the inside has a fuse (fuse some 130 ℃), used to monitor the voltage regulator block work. If the process of abnormal discharge, immediately there is a current through the temperature protection device, the fuse blows, the circuit inside the battery at this time for the off state, Hp pavilion dv6 battery and unrecoverable. If you want to repair only the replacement of the temperature protection, but such temperature protector is hard to find in the market.
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