Battery Trickle

Battery Trickle

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Fujitsu Lifebook T4010/T4020 battery

Notebooks now use more and more people, as one of the main components of the notebook lithium battery problems also increased. So how should make good use of the notebook lithium batteries do? Grasp the main points:

1. Chong appropriate discharge current.

2. Minimize the discharge less than the charge or over discharge.

Although the battery is a consumable, lithium-ion battery is no exception. But no one wants to use the sperm cell of the spirit of God to the age you do not snap on the end, no one wants to own the very beginning, half dead battery does not pull the living, has been rubbing on this in 2023, people make good experience about how the chicken thing, you said it is not?

Well, Closer to home, following the battery began to speak. To explain lithium-ion battery is limited.

Appropriate charge and discharge current

General literature and the state on the standard lithium-ion battery that the lithium-ion battery charge current should be between 0.2C to 1C. This is expressed by the battery charge current capacity, such as your battery is 4AH, then the 0.2C charge current is 0.2X4 = 0.8A, in other words the charge current should be between 0.8 to 4A. In general, the charge current in the extent permitted by the smaller the better, rechargeable lithium-ion battery should be the beginning of constant-current charge, in my IBM R31, this current is about 2.8A, which is equivalent to 0.7C, is charging its own circuit control and can not be set. Although such a charge indicator does not exceed the standards, but it does more, especially when the battery capacity decline for some time, the charge current may be more than 1C. The length of time charge notebook now also become targets regardless of the user, the manufacturers were forced to charge current set so high.

So the first step is to reduce the charge current. I have friends working in the laboratory, a variety of devices ranging in his trial a bit there. Power output at the series resistance try a result, current is reduced, but became intermittent charge, this is not a good thing. After trial and error, 4 Ohm is a more ideal value, this time around 0.8A charge current is very stable. This is only the power flows through the machine interface of the current, the battery's charge current is estimated to bigger, it should be slightly larger than 0.2C. Specific to a different machine, this value may be different. In addition with the increase in battery voltage, charge current will be reduced, but decreased only slightly less than 0.05A. In this charge state, charging circuit seems to does not work, the battery indicator light is not bright. Such as the battery voltage up to 12.6V, the charging circuits came into play, the battery trickle charge to enter the state, this time does not matter whether the series resistance has been, the charge current is controlled by the charging circuit, and the last full charge after the end of the circuit automatically charge. The entire charge time is about 5.5 hours, if not resistance, charging time is about 3.5 hours.

Fujitsu FPCBP80 Battery is very precious, good charge control circuit is necessary. This charging method, can reduce the charge current to extend battery life, use of books at the same time, the charging circuit to control the original charge, is also relatively simple to achieve, just buy a power plug (from the power supply into books kind, it is best to buy two, the latter also referred to a method, it is necessary to good quality) and a resistor can be, and pay attention to resistance, to a large point size, after all, there are about 2W of power Otherwise, it would be more heat resistance, the best use of their constant resistance of a wire, the wire resistance and temperature resistance of the basic irrelevant. But the shortcomings of this approach is also clear is that, while not in charge of work with books. In addition there will be time to charge a strange phenomenon, I do not write omitted here, and you try to know, Fortunately this phenomenon into the trickle charge after the state disappeared. To extend the charging time is not a big problem, since the beginning of charging before going to bed at night, wake up the next day on a good charge, of course, if you are a night owl or a special short sleep time, it is a different matter.

Solve the problem of small current charge, and now turn to the issue of discharge. In fact, this is difficult, after all, the book is designed to work with the discharge current will vary depending on the work of the state, the method mentioned here is limited battery capacity dedicated to the restoration operation.

Start the machine, set the power management never goes into sleep mode (standby) and hibernation (hibernate), the other are the most power-saving mode is set, including the CPU speed, hard drive shut down, close the display, and management process in the TP some do not turn off the hardware, such as sound cards, etc., and then open the battery status display window, to run in the foreground! ! ! Close other programs, in particular, screen saver and other programs that run from time to time! ! Do not use the machine, do not close the lid, let the battery discharge finished (not to discharge the minimum value set to 0, I set up 3%). Display and hard drive shut down, the discharge current is about 0.5A, this is my IBM R31 can be achieved at the minimum discharge current, battery discharge to the lowest setting after the machine will automatically shut down. Continued to discharge the entire time about more than four hours, according to your battery capacity may be different, this time to sleep is also a way to use the pass.

Well, the last to emphasize that this method is not dead, especially the discharge, there are a dozen times to do it, otherwise the battery still doing? Charging the best use of small current charge, of course, if an urgent need to use batteries, power supply plug inserted directly in the book on it.

I use this method of and now put a charge 14 times the capacity has remained at more than 45, and battery design capacity is 43.2, which also decreased the time, but after filling the first released restored.

The saying goes: When effort brings success, add up! We can not be the details of the error, in life, in the use of notebook computer is! It is perhaps well-intentioned you inadvertently move, and ultimately lead to the serious consequences of inestimable! Lost a long time to develop the scientific research or small, if the loss of a beloved book, that may be worth it! What? Say that I am exaggerating? It together with me to see the details below a few errors, you share a few?

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Car Battery Trickle Charger