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Due to buying two lithium batteries when purchasing a camera, I have been reluctant to use one battery. Today, when I took it out to charge it, I found that the charger's light flickered twice and did not light up, making it impossible to charge. What should I do? Later, I searched online and found that my battery was already scrapped. I feel sorry and ignorant......
Brothers, there are still lithium batteries in your hands. Remember to charge them, otherwise if you discharge too much, you will never be able to charge them again, which is equivalent to being scrapped. That's really heartbreaking....
So we've always been wrong! The 'lithium' battery care law.
When should iPhone, iPod touch, and iPad be charged, and is it better to wait until the battery is almost depleted before charging? Should I charge for 12 hours for the first time? Will frequent charging reduce battery life? My phone is connected to the computer every day, will it break down early?
For the above questions, today I have specially compiled this article, hoping to be helpful to everyone:
Conclusion:
1. Devices using lithium batteries do not need to be charged for 12 hours during the first use, which is unnecessary!
2. Charge at any time without affecting your device, because lithium batteries are not afraid of you charging, only afraid of running out of battery!
3. If the battery is fully discharged, please charge it as soon as possible. Delaying it for too long will make the battery unable to sleep from now on!
Types of batteries:
Firstly, we need to understand that there are many types of batteries, and iPhone, iPod touch, and iPad use "Li ion rechargeable batteries". Generally, what we buy in convenience stores are so-called "primary batteries", such as alkaline batteries, manganese dry batteries, silver oxide batteries, mercury batteries, etc. These batteries can only be used once, and after the power is used up, they must be discarded and recycled!
Another type is secondary batteries, also known as rechargeable batteries. Common types include nickel cadmium batteries, lead-acid batteries, nickel hydrogen batteries, lithium-ion batteries, fuel cells, and so on. But just take a look at these, you don't need to take notes, because the real classification of batteries is not limited to these!
In this article, the editor will share the usage of "Li ion rechargeable batteries" for iPhone, iPod touch, and iPad:
Can lithium batteries only be charged and discharged 500 times? Saying it right is also right, saying it wrong is also wrong!
According to some international research data, the number of charging and discharging cycles is indeed limited, which is correct! But this must be done when the battery is depleted, that is, if you fully charge the battery (4.2 volts) and continue to use it (3.6 to 3.7 volts), if the battery level decreases (3V~2.5V), a weak current warning will begin, and if it falls below 2.5V, the battery will automatically shut down even if it is depleted. This action is called deep discharge (charging from 2.5 volts to 4.2 volts once).
According to experimental data from abroad, excellent lithium batteries can achieve a deep discharge frequency of over 500 times. In other words, although the deep charging and discharging (fully charged, fully discharged) action is not good for lithium batteries, such action frequency and lifespan can also reach over 500 times. However, it still depends on the design and quality of the battery (excluding brand benefits, expensive batteries still have their own reasons for being expensive), and it can be confirmed that The more times it is depleted, the earlier your battery will return to the west!
But according to the characteristics of lithium batteries, if the voltage inside the battery drops to a certain level, then the lithium battery will self close and not break in real time, which means that because the voltage has already fallen below a certain limit, the battery will be in a dead state where it cannot sleep (this is now called a false fault)!
So you will find that if your phone battery or digital camera battery has not been used for a long time, why can't that battery be charged? Or is the lifespan getting shorter and shorter? In fact, this is because the battery has run out of power, causing the voltage to be too low and preventing the lithium battery from starting, which in turn causes the battery to malfunction prematurely (because the voltage is lower than the value, causing the battery core to be unable to restart the charging process)!
This situation most commonly occurs on the batteries of digital cameras. Many people buy extra batteries for their digital cameras, but sometimes these batteries are not used frequently. In addition, they usually ignore the charging process, so if they are not careful, these batteries will be discharged. When the battery level drops below a certain voltage, the battery will be scrapped (so remember to take out the battery and charge it if necessary).
Excellent batteries will have a 'charging management IC' to limit the charging and discharging voltage to ensure that it does not exceed the safe voltage (overcharge) and prevent battery explosion. At the same time, the IC will detect and avoid voltage drops below 2.5 volts, which can prevent the battery from being unable to start the charging process due to depletion of power. But if a battery that is almost dead and you don't charge it quickly, the power will still be slowly consumed by the built-in management IC. When the voltage drops below 2.5V, your battery will be scrapped
If lithium batteries are left uncharged for too long, they will break down
Overcharging is a problem that many devices have protective devices that automatically stop charging when fully charged, so there is no need to worry about this issue! But another issue that everyone should pay more attention to is Don't leave the battery completely discharged!
It is often said that it is recommended to "use up the battery power and use it to charge after shutting down", but this statement is completely wrong in the world of lithium batteries! When the iPhone shows a power warning at 20%, it is time to start preparing for charging. If the lithium battery is excessively discharged, it may cause the battery voltage to be too low, resulting in a hibernation state where the battery cannot sleep, and causing the battery to die prematurely!
When the new battery is used for the first time, it does not need to be charged for 12 hours
The statement that new batteries need to be charged for more than 12 hours is actually a continuation of previous nickel batteries, such as nickel cadmium (Ni Cd) and nickel hydrogen (Ni MH) batteries. However, with the advancement of technology, this action is no longer necessary after lithium batteries! Even excessive charging and discharging can be harmful to lithium batteries.
Many products (such as mobile phones, digital cameras, and specialty products) require that you fully charge for at least 12 hours when using them for the first time, in order to ensure safety. This is because the process from factory shipment to sales to users can take several months, and these batteries may gradually lose their power during this period. Therefore, in the original manufacturer's instructions, it is usually recommended that you connect the charger first and charge for more than 12 hours to avoid starting to play when you get the device. If you play with the battery below 2.5V, the battery will be in bad condition! So the original factory will require you to charge for 12 hours, which is actually a "trick" to avoid users accidentally causing the battery to run out.
Most chargers or devices (such as mobile phones, digital cameras, laptops, etc.) automatically stop charging after the battery is fully charged, and have protective devices that turn off weak electricity to avoid damage to the battery. But there are also some cheap batteries or chargers that "may" not do this (cost), so be sure to pay attention when using them. Once the battery is fully charged, remove it and don't keep it on the charger all the time. That's meaningless. If the battery runs out of power, quickly remove it and don't continue to use it, so as not to cause the battery to run out and hang up!
Charge whenever you want, try to keep it charged, that's right
So overall, don't let your battery run out! This is the best protection. Simply plug in the charging and transmission lines at any time, and it will not affect the battery. The characteristics of lithium batteries determine that they have almost no memory effect. Therefore, even if you have 80% battery capacity now, feel free to charge them. After the battery is fully charged, it will automatically stop charging, so your battery will not overcharge or have any impact on the battery!
In other words, lithium batteries are not afraid of being charged at any time, but rather afraid of running out of battery! When there is a low battery prompt, you should charge or replace the battery as soon as possible, and do not let it completely drain (such as the battery of a digital camera, do not try hard to take pictures until it is completely out of battery, which is very harmful).
If a lithium battery runs out of battery and is left unused or uncharged for a long time, it will cause the battery to fail due to low battery level and cannot be used again. Batteries that frequently deplete their battery life are at least half shorter than those that are frequently recharged, and should not be taken lightly.

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