Laptop. disconnect the battery or not?
And so we will analyze today one urgent topic that arises for everyone who works hard on a laptop. Is it necessary to disconnect the battery from the laptop when working at home from the network? Short answer. It all depends on what type of battery you have in your laptop. In modern laptop batteries, such a thing as "Battery memory" no longer! The most important thing is not to put the battery to the very end and not to leave it in a discharged state for a long time.
But if you delve into the details of electrical engineering, then there is a microcircuit inside the battery, which, together with the controller in the laptop itself, determines when the discharge threshold is reached and then turns on charging! Accordingly, if your battery is charged, no charge current flows to it, which means that the charging cycle has not been started. And if you take the way power is being supplied to electric networks now, the battery in the laptop serves as a kind of UPS (uninterruptible power supply) and stabilizes the voltage when the voltage surges due to the battery, which at that moment will be like a big capacitor! So in my opinion there is no reason to remove the battery.
"Bad advice" from experienced?
Quite often, “experienced notebooks” are advised to remove the battery during prolonged use of the laptop from a reliable power supply: supposedly, when the laptop is powered from the power supply, the battery is constantly recharged, which causes a significant reduction in its service life
What can be said about such advice?
Firstly, the laptop battery starts to recharge, as a rule, when its capacity drops below 95% (the specific level of acceptable discharge depends on the model of laptop).
Secondly, the battery is designed to work with the alternation of numerous cycles of "charge-discharge".
Thirdly, the laptop battery acts as an uninterruptible power supply when the voltage disappears in the mains supply, the laptop switches to battery power, which prevents the loss of your data and nerve cells!
Fourth, when the battery is permanently connected to the laptop, it is in “constant combat readiness”, i.e. constantly charged, which ensures mobility of work without unnecessary gestures. If the battery is disconnected from the laptop, then before battery life (for example, before a business trip) you will have to connect it to the laptop and spend some time (which is always not enough!) To charge, because any battery is more or less susceptible to such a phenomenon as self-discharge.
Fifthly, if you often work autonomously on a laptop, then such advice looks, at least, stupid.
All of the above is true for lithium-ion (Li-ion) batteries, which are equipped with almost all modern laptop models. There is no “memory effect" in Li-ion batteries, so they can be "recharged", i.e. charge without subjecting it to complete discharge.
What is a "memory effect"
The “memory effect” is that the battery “remembers” how much energy it gave up during the discharge cycle and “believes” that its full capacity is equal to the amount of energy delivered. Therefore, when charging a battery that is not fully discharged, it will accumulate less energy than necessary.
The “memory effect" is more susceptible to nickel-cadmium (Ni-Cd), to a lesser extent. nickel-metal hydride (Ni-MH) batteries.
A laptop without a battery is not a laptop anymore, or is it still a laptop?
Of course, according to statistics, laptops up to 95% of the time are powered by the mains. And, if you use the laptop as a stationary personal computer, and the power supply operates smoothly, you can safely remove the battery and work without it.
By the way, many companies have long been producing non-battery laptops that are in steady demand among customers (the prices for these laptops are naturally lower than the classic rechargeable ones): for example, PCG-F610 from Sony, DeskNote (i-Buddie) from Elitegroup. Taiwanese company ASUSTeK, convinced of the undoubted success of battery-free laptops, also intends to enter this market.
What is the battery life of a laptop?
According to statistics, the average battery life of a laptop is 2-3 years (while the average life of a laptop is 6-7 years).
The battery life of a laptop depends on many conditions: the type of battery, capacity, operating conditions, etc.
1. It is advisable to subject the new laptop battery 3-5 times to the so-called training (full charge. full charge. full charge).
3. If your laptop is designed for battery calibration using the BIOS Setup utility, be sure to use it.
4. If your laptop is equipped with a nickel-cadmium (Ni-Cd) or nickel-metal hydride (Ni-MH) battery, to eliminate / prevent the "memory effect" once a month, conduct a training cycle "full discharge. full charge".
5. The laptop batteries are designed to operate at room temperature, the allowable range is from 10 ° C to 35 ° C.
6. Do not store Li-ion batteries fully discharged.
7. Do not buy Li-ion batteries in reserve.
8. The battery lasts about 3 hours.