Is it harmful to keep a laptop on your lap?
The harm from such use exists both for a man or woman, and for the device itself:
- Posture problems. During such a position, the posture a priori will not be in an even position, therefore, after a long time of working in a similar position, back problems will not take long.
- Irradiation. The radiation emanating from a laptop thanks to the WI-FI antenna has a negative effect on the human body, especially if they are small children, and the closer to the body it is, the stronger the effect.
- Severe restrictions for pregnant women. For girls in position, doctors not only prohibit keeping a laptop on their laps, but also limit the total time of using it, so as not to harm the weakened body.
- Breakdown of a laptop. There is a possibility of accidentally knocking the laptop, or hitting it with some object. Also, working in this position along with food or drinks can often get on the keyboard and susceptible holes with liquid, which will lead to serious problems.
- Overheat. Sitting on your lap, the device does not receive sufficient ventilation to dissipate heat, thus hot air accumulates inside, which over time leads to serious breakdowns, burnout of certain parts.
Can I keep my laptop on my lap
A laptop is an integral part of the life of any modern person, with the help of which we watch films, read, study and, of course, work. It is assumed that when operating such an electronic assistant, the user will sit at the table, at a certain distance from the gadget, but how many people follow this rule? Those who spend several hours a day at a laptop often move to bed with it, lay it on their knees, and continue to work in this position. But did you know how dangerous it can be?
Harm to women’s and men’s health
The greatest danger of such work with a laptop is for men’s health, affecting the ability to have children. The fact is that in this position, due to the heating of the laptop, the scrotum overheats, which affects the productivity of sperm. Heating the genitals even by one degree has negative consequences. the function of the testicles worsens by 40%. Studies have shown that an hour of using the device in the “kneeling” position warms up the scrotum by 2.5 degrees. Therefore, in order to protect yourself, you need to work at a laptop strictly at the table.
For women, there is no obvious harm or prohibition, the only exception is pregnancy, in which pressure on the abdomen can harm the fetus. Plus radiation that is harmful to any body, especially in contact with the body.
It is clear that working at a laptop in such a position is very convenient and sometimes the only way out, especially when there is no comfortable table in the room, or you went out to work in the park. But having studied all the negative consequences, there is only one conclusion: working at a laptop, holding it on your lap, must be minimized.
Is it possible to keep the laptop constantly on charge
A certain layer of laptop users always keeps them connected to the network, despite the fact that the battery is fully charged. Many people leave them plugged into an outlet overnight, regardless of whether the device itself is turned on or not.
The answer to the question posed in the title of the article is rather ambiguous, since even the laptop manufacturers themselves do not have a single opinion: some advise not to keep the laptop constantly connected to the network with a charged battery, others do not see anything wrong with this. However, we will try to consider this topic in more detail, so that each user can decide what to do in a particular situation.
The interest in whether it is possible to keep the laptop constantly on charge arises on the basis of two points:
Removing the battery
In not the newest laptops, which have not yet become almost monolithic, removing the battery is the simplest process. For this reason, some decide to disconnect it when operating from the mains in order to avoid exposure to high temperatures and constant trickle charging when the charge drops to 99%. This is not completely devoid of meaning, although it is more inconvenient, moreover, it does not provide tangible benefits. It has already been mentioned that in this way you limit yourself in additional protection in the event of a sudden power outage, and a battery that has been removed for a long time can be completely discharged, and this will affect it in the same negative way as the factors that you wanted to avoid. In addition, a drop in charge to 99% and an increase to 100% is not considered a cycle, as we already explained above (the charging stage from 80% to 100% is called compensatory, in which the current supplied to the battery weakens, which prolongs it lifespan than if it continued charging in fast mode). But if for some reason you decided to store the battery separately from the laptop, then charge it up to 50-60% and do not let the charge drop below 10%.
In contrast to the controversial point about monitoring the charge level, temperature plays a direct role in battery life. One of the biggest enemies of modern batteries are temperatures that are too low (below 40 ° C) and too high (above 50 ° C). Constant holding the laptop, especially coupled with a high load, while charging leads to an increase in temperature, which negatively affects the components of the laptop as a whole. Nevertheless, it should be understood that connecting to an outlet is not the main factor of overheating: the laptop heats up much more if you keep resource-intensive applications such as editors, games open for a long time, as well as if you organize the wrong workplace, in which radiators, from where the warm air is blown out, overlap and / or the device itself is kept close to heat sources.
Is it safe to use laptop while charging? How to use a laptop properly
Many people believe that the battery has a so-called memory effect, in which it “remembers” past cycles, and if then its capacity was not fully used, in the future it will continue to deliver the same amount of current as was required before (that is, less than it stores in itself ). In fact, this rule has long been no longer applicable to Li-Ion and Li-Pol batteries, which are now installed in almost all laptops: despite the fact that the memory effect is formally present in them, according to research, in fact, its manifestation is so low that nothing does not significantly affect battery performance. Therefore, you do not need to worry about having to completely discharge the battery first and only then put it on charge, just as you do not need to paranoidly monitor the achievement of 100% charge and disconnect the power cord. Such manipulations were relevant with NiMH batteries, but you still need to try to meet them in modern laptops.
Impact on laptop
If you look at the situation in general, the systematic mains supply is convenient: a person does not need to worry about whether the battery is charged at the moment or not. This is especially true when the rhythm of life involves periodic movement with a laptop. The battery, in combination with the charger, serves as a kind of uninterruptible power supply, and even if the electricity was suddenly cut off in the room, no data inside the running operating system will be lost, and the battery itself will be fully charged and ready for further work until the power is restored.
The negative side to a greater extent lies only in the fact that a laptop is exactly the same device as any other, powered by the network, so the possible consequences of power surges may one day affect it. In the absence of any protection, there is always a chance that the laptop may simply burn out, although such cases are rare. The situation is complemented by the fact that not all laptop owners have purchased original power supplies, which are also a charger. If you use a non-native component, the laptop can completely ignite, which is especially dangerous when it is unattended. Perhaps this minus is the only serious one that requires a person to comply with basic safety rules, as well as when handling all equipment.
Effect on battery
Now let’s move on to a more narrowly focused topic, since users are often interested in exactly how constant charging affects the battery and whether it deteriorates badly.
Another very popular opinion is that the battery does not need to be charged to 100%, as this will reduce the number of discharge cycles. After the resource of these cycles is used up, the battery will begin to hold energy worse and the duration of off-grid operation will be reduced.
To a large extent, this is true. batteries have a certain limit on the number of discharge cycles, and it is approximately 500-550. When this figure is exceeded, autonomy will invariably begin to decrease, and the battery will drain faster. For this reason, in various battery-powered equipment, you can find restrictions on the level of charge: for example, some laptop manufacturers create special utilities that turn off battery charging after it reaches 80% charge, or this parameter can be found in the BIOS (not always). for certain smartphones (for example, iPhone) the function of limiting charging after 80% is also available in the settings.
The 80% limit is explained by the fact that this is a trade-off when it comes to performance and capacity. For example, the application for ASUS laptops (other brands have their counterparts) prompts the user to choose the charging mode himself: up to 100% for long trips, up to 80%. for not too long working moments such as conferences and meetings, up to 60%. with constant connecting the laptop to the charger. The 50-60% mode is also recommended by other companies, since in this state, the amount of energy inside the battery is at an optimal level, and everything above 80% accelerates wear due to overcharge. It is also worth clarifying that we are not talking about the non-existent phenomenon of “overcharging”, since after charging to 100%, the power supply is turned off using the controller. The presence of upper and lower boundaries is determined by the principle of operation of the batteries and the peculiarities of the distribution of energy within it.
On the other hand, charging your battery up to 80% does reduce wear and tear, but you still charge it more often. This is impractical, since it deprives you of 20%, which can be useful outside the home, and charging up to 40-50% can even lead to a deep discharge (mentioned in the next paragraph). This forces you to monitor the charge level all the time, to control this process, especially if you do not resort to using special programs. However, if these nuances do not alter your desire to reduce the number of recharges and keep the battery cells in the best possible condition, you can follow this recommendation. However, there are laptop manufacturers (for example, Dell) who inform their customers that their laptops can be kept fully charged and connected to the network without any fear. That is why we cannot give you any specific recommendation, but we suggest reading the article to the end in order to draw a full conclusion, and not rely only on the number of available discharge cycles.
As for the discharge, it is important to know only that it is bad for the battery when it is completely discharged. The lower limit is 10-20%, but natural discharge within the permissible limits is absolutely normal. It should be understood that by not fully charging your laptop, you may find yourself in such conditions when, without a power supply, you will discharge it at 0%, which might not have happened if it was 100% charged. From this it is worth concluding that in some cases, compliance with the recommendations for incomplete charging can be a greater evil than neglecting them.
The ratio of the depth of discharge and the number of discharge cycles
We separately mention the availability of material on various sites of this article, namely a table showing how the depth of discharge affects the number of discharge cycles. See example below:
It is shown here that at a depth of discharge of 100% (the battery has 0% charge) the number of discharge cycles is 500 times, and at a depth of discharge of 10% (the battery has 90% charge) the number of discharge cycles has increased to 4700 times. This misleads some people, and they begin to think that if you discharge and charge a laptop by these 10%, then the “life” of the battery will increase several times and it will last for decades. In fact, this presentation of information is not correct: the discharge cycle is the period when the battery has given up 100% of the charge, and not necessarily at a time. That is, if at one time you spent 40% of the charge, and after another 60%, you used up 1 cycle. Now, if you think about the above, the question arises. how the endless loss and compensation of these 10% will help increase the number of 500 cycles set by the manufacturer to 4700? Naturally, no way. Do not confuse “cycle” and “recharge”.
Whether it is possible to leave the laptop charging in the outlet is not as important as whether the device is used correctly and whether the user does not harm the duration of its full-fledged work by his actions:
- the benefits of removing and storing the battery from a laptop separately has not been confirmed, rather the opposite. it will make the PC more vulnerable to voltage surges;
- overheating and cooling of the device is undesirable for Li-Ion and Li-polymer;
- permanent full charge or storage of discharged Li-Ion, Li-polymer is undesirable, you can do a calibration every 3 months, discharging-charging completely.
Is it possible to charge the laptop with another charger
The lower the charge level (volts per cell), the longer the battery life, but each device has its own V (volts) and A (amps) values. Using a charger with large parameters can damage the battery, and lower values will not be enough to fill the battery. Whether it is worth keeping the laptop constantly on charge, the parameters of which differ from the “native” charger. it is better not to risk it. In emergency cases, you can try to resort to a charger with a lower voltage. perhaps this will allow you to work from the mains.
Can the laptop always be kept on charge?
The question as to whether it is harmful to keep the laptop on charge is asked by the recently bought laptop and the one who has had it for a long time, but the battery has become worse to hold a charge. Much depends on the manufacturer of the device, the release date and the laptop battery itself. There are several types on the market:
- NiMH. contains the toxic substance of the same name. Nickel-cadmium batteries are larger and weightier than their counterparts. It was during their use that the question arose. is constant charging harmful for a laptop. This is due to the “memory effect”, which is why the battery must be discharged completely, otherwise it loses its volume. The advantages include financial affordability and resistance to overheating. Therefore, this type of battery is installed in gaming PCs. if used correctly, it will last longer than a lithium battery. Kept completely discharged.
- Li-Ion. popular lithium batteries have earned their status as convenient and versatile due to their lightness and significant power density. They have no dependence on whether the device is used online or offline. They are equipped with a controller, which, when the preset battery charge parameter is reached, directs energy directly to the device. Sensitive to temperature extremes, it is undesirable to use at more than 30 degrees and below 0. Stored half charged.
- Li-polymer is another battery that is sensitive to use. It is lightweight, non-toxic, longevity is determined by the correct laptop charger and avoiding full discharge and maximum charge. It is optimal to keep the charge at 50%, a drop of 30% to 80% is allowed. Is it possible to leave your gadget on Li-polymer charging. undesirable, even with a controller, it heats up, which has a bad effect.
How to remove / put a limit on the charge
Most manufacturers provide a maximum charge limit of 80% to increase battery life. This is due to the user’s questions about whether the laptop can always be kept on charge. The software solves this problem and allows you to use the device from the network without fear of negative impact. Depending on the device, you can increase the parameters or allow the charge to 100% in the following menus:
- For example, Lenovo. “Control Panel Power Options. Settings. electric plan rev. add. couples. Power. ”, A tab with the name Lenovo Energy Management;
- for Samsung. “Start. All programs. Sams Battery Life Extender “.
Whether it is necessary to keep the laptop constantly on charge. not at all, if we are talking about Li-Ion, whether it is possible to keep a charged laptop on charging. it is undesirable if we are talking about Li-polymer. The service life of modern batteries depends on many factors. A concomitant problem may arise. poor-quality assembly, overheating of the device, the manufacturer took care of protecting the battery using the controller and software. Each type of battery is individual in use, so when interested in whether it is possible to keep a laptop on charge, you first need to determine the type of your device and study the parameters of a specific model. When choosing a new battery, it is worth analyzing the conditions of its use and assigned tasks.
Is it possible to keep the laptop constantly on charge
In fact, every laptop user at least once asked questions about how long a laptop can be kept on charging, and whether it is worth removing the charger plug from the connector when the battery is fully charged. The opinions of users on the Internet on this topic were usually divided, and in the vastness of the network among laptop users serious disputes flared up about the features of laptop batteries. This article aims to dot the i’s in the above question.
Should I always keep my laptop on charge??
If you look for the answer to this question on thematic forums, you can find that there are only three main opinions on this matter:
- A permanently connected charger does not affect the operation of the laptop and battery life
- Continuous recharging can lead to overheating of the device and premature battery failure.
- It is best to remove the battery from the device altogether, and insert it only if necessary, mainly using a laptop as a desktop computer.
Reference! These tips were really relevant for the batteries of the previous generation, but now their use is unlikely to be justified.
In the majority of modern mobile technology, so-called lithium-ion batteries are used, which are characterized by an increased service life and a low self-discharge level. Such batteries are disconnected from recharging when they accumulate the maximum possible amount of energy, and resume charging when the charge falls below the set level.
However, lithium-ion batteries are still not perfect and have their drawbacks. For example, they gradually lose in terms of energy consumption after each recharging cycle. Over a long period of time, this significantly affects the state of the battery, therefore, over time, many owners of modern mobile technology begin to notice that their device ceases to “hold” a charge.
Advice! In order to extend the service life of such a battery, some experts advise making it full (before disconnecting) charging about once a month, and the rest of the time to make it periodically recharging.
How to properly charge your laptop: recommendations
Not many laptop users are aware that most of their models have a so-called power saving mode, which allows you to extend the battery life. This mode, however, has a significant drawback: when it is turned on, a special controller does not allow the battery to work at full capacity, and limits the maximum possible charge by about 80%.
If we are talking about buying a new laptop, before turning it on for the first time, it is recommended to charge it “one hundred percent”, that is, wait until the battery is fully charged, even if it takes a long time. In addition, after the first use, it is recommended to completely discharge and recharge the battery three times without leaving the battery discharged for a long time. At the same time, in the “cycles” of discharging / charging, it is recommended to give the laptop an average level of load, that is, do not play “heavy” video games and do not watch full-length films from external media.
It will also not be superfluous to study the technical documentation with which the developer has completed his product. Often, it contains general information about the nuances of setting energy consumption “for yourself”, which allows the user to choose the parameters of the load and maximum charge that are optimal for the device.
Reference! Experts do not recommend leaving the laptop uncharged for a long time. In this case, the concept of “discharged” includes not only a completely dead battery, but also a battery with a charge level of less than 10%.
It is also worth avoiding long-term idleness of the laptop in the off state, fully charged and with the charger connected to it. It is also not recommended to keep the laptop in sleep mode for a long time, since such a mode, contrary to popular belief, still consumes electricity, and, moreover, very quickly. In order to slightly reduce the rate of discharge of the battery, you can not only select the power-saving mode, thus reducing the performance of the system, but also reduce the brightness of the display through the system settings.
No electronics will work without batteries. from laptops to ordinary MP3 players. In recent years, the most common lithium-ion batteries have the designation Li-Ion. With a large capacity, they are relatively light in weight. Their only drawback is the need to follow some rules. For example, it is imperative to know how to properly charge a laptop so as not to ruin the battery by drastically lowering its capacity.
Most often, laptop computers are sold with partially charged or even completely discharged batteries. And you should know exactly how to charge your laptop for the first time. Therefore, read the instructions below and get down to work calmly.
Without turning on the PC, insert the plug of the charger into the socket. The first time it is better to charge it for 6-8 hours. In this case, you will definitely get a battery that is 100 percent charged. If you charge the switched on PC, then after 15-20 minutes the icon will show a full charge. of course, this is a small mistake. In this case, you can turn off the computer, remove the battery, and wait a few seconds. Then put the battery back in place and continue charging with the computer off. Don’t be surprised if your laptop gets very hot while charging.
If you want the battery of your device to have the maximum capacity (and therefore allow you to work without recharging for as long as possible), it must be “trained”. To do this, when the battery is fully charged in 6-8 hours, disconnect the power supply and start working in offline mode. When the battery is completely discharged, put the PC back on charge, preferably overnight.
Is it possible to constantly take asparkam
By repeating a similar cycle 3-4 times, you can develop the battery to the maximum. now it will reach its maximum capacity and will keep it for a long time.
Lithium-ion rechargeable batteries are commonly used in modern laptop models. Such batteries, in contrast to the already outdated nickel ones, are characterized by the absence of a “memory effect”, therefore they do not need to be completely discharged before each new charge. However, lithium-ion laptop batteries still have their own characteristics and charging rules.
First, it is worth noting that even the best lithium-ion laptop battery is subject to wear and tear and over time it will in any case lose some of its original capacity, and sooner or later it will completely deplete its resource. In this case, the battery has to be replaced, since it can no longer provide even a few minutes of laptop battery life.
If the laptop battery is used wisely, in particular by properly discharging and recharging it, then its life can be significantly extended. Consequently, in this case, you will not have to buy a new laptop battery soon. To charge your laptop correctly, there are a few basic principles to remember.
You can start charging a laptop using lithium-ion batteries at almost any battery level, but usually experienced users recommend performing this procedure when the threshold of 30-40% is reached. If necessary, you can start charging the laptop battery even if its charge level is 70-80% of full.
If the laptop battery is not constantly used, that is, the laptop is more often connected to the mains than it works autonomously, then it makes sense to disconnect the 50-70% charged battery from the device and store it separately. True, it is also impossible to leave the battery idle for a long time. this can lead to a reduction in its service life. In this regard, it is recommended to connect the battery to the laptop at least once every 2-3 weeks and use the offline mode.
When working with a notebook, avoid overheating or overcooling the battery, as temperatures that are too high or too low negatively affect the battery’s ability to “hold” a charge. Once every 2-3 months, it is worth cleaning the battery contacts from plaque formed as a result of the oxidation reaction, since such plaque is the ability of the battery to provide long-term autonomous operation of the laptop.
List of fermented milk mixtures
Mixtures are produced for feeding children from birth (adapted formulations with the number 1 on the package), as well as for babies older than 6 months (marking on the package. number 2).
Russian pediatricians recommend using mixtures of well-known manufacturers, which can be given from 0 to 12 months:
- Nutrilon 1 Fermented milk;
- Nutrilon 2 Fermented milk;
- “Agusha 1” fermented milk mixture;
- “Agusha 2” fermented milk mixture;
- Nan 1 Fermented milk;
- Nan 2 Fermented milk;
- Nutrilak Fermented milk (on the package there is not a number, but an inscription from birth).
It is quite possible to feed a child constantly only with fermented milk mixtures. They are not so named because they affect acidity. Lactic acid bacteria (bifidobacteria and lactobacilli) are added to the composition of these products, which contribute to the normalization of the child’s microflora.
It is interesting
The advantage of fermented milk mixtures is that the bacteria that are in their composition contribute to the processing of lactose in the intestine, therefore, these products are prescribed even with lactase deficiency. Protein molecules in fermented milk formulations have undergone partial cleavage (fermentation). This protein is better absorbed.
Features of fermented milk mixtures
The main difference between dry fermented milk mixtures for children is that during their production, protein is introduced into the product in a curdled state. This makes it easier to digest and increases the absorption of food. Beneficial bacteria contribute to the normalization of the intestinal microflora in the baby.
Fermented milk products, due to their composition, have a positive effect on the secretory function of the gastrointestinal tract, improve metabolism and increase immunity. These mixtures are prescribed for children who have:
- intestinal disorders;
- allergic reactions;
- dysbiosis (especially after antibiotic treatment);
- anemia (fermented milk formulations increase the absorption of iron).
Pediatricians prescribe fermented milk products to premature babies. From birth (from 0 months), only adapted formulas are used.
Is it possible to feed the fermented milk mixture constantly
For children of the first year of life, fermented milk mixtures can be prescribed one-time and constantly. If the child suffers from colic and frequent regurgitation, the doctor recommends that the mother, for some time, replace several feedings with the usual mixture with fermented milk food. In case of gastrointestinal diseases, fermented milk mixtures are also introduced into the diet once.
There is no definite answer to the question of whether it is possible to constantly feed a child with a fermented milk mixture. Some pediatricians claim that it is possible, their opponents suggest replacing only a few feedings or giving constantly for some time, and then return to the usual formulations. The main argument of opponents of constant feeding is that fermented milk formulations can affect the acidity of the stomach.