How long is the NiMH rechargeable battery life?

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The national standard for the cycle life of nickel-metal hydride batteries is 500 times (80% DOD), and the company advertises 1000 times, which can be achieved by a single battery. NiMH rechargeable batteries can be used for more than 5 years. The memory effect of NiMH batteries is very small and negligible.

Theoretically, the life of nickel-metal hydride batteries is slightly longer than that of nickel-cadmium batteries, both of which are more than 5 years, but when nickel-metal hydride batteries are overcharged, the adverse effects on the battery are greater than those of nickel-cadmium batteries. The so-called correct charging is to make 100% of the capacity of the rechargeable battery play out without damaging the battery. Incorrect charging has two consequences, the capacity cannot be 100% exerted, and the battery is seriously damaged.

Although the memory effect of nickel-metal hydride batteries is small, it is still recommended that you try to recharge them after each use, and they are fully charged at one time, not charged for a while and then charged. This is an important part of longevity.

Generally, the number of cycles of nickel-metal hydride batteries is 800 times and 1200 times; Batteries with low cycle times have high internal resistance and poor performance, so many cheap batteries generally have low cycle times. Therefore, to measure whether a battery is good or not, we cannot simply pursue how high the capacity is, but comprehensively consider the battery capacity and the number of cycles.

The life of this kind of battery is generally 300-500 times, if the quality is very good, it will be 500 times, if it is a general brand 300 times, it is almost the same. The energy density of a battery with this structure is compared to that of a lithium battery.

and the number of lifetimes.

Judging from my experience with mobile phones, nickel-metal hydride batteries have been on standby for more than one or two months, and how many years they have been used, although they are functions.

machine, but it can't last so long with a lithium battery.

NiMH batteries also last longer. Which non-smart machine in the old days doesn't need to be three or five years? Until the phone is rotten, and the battery is fine. And now lithium batteries can be stared at for three or five years is already very good.

But lithium batteries also have their own advantages, they can be charged at any time, and there is no memory effect that will not cause damage to the battery.

Compared with nickel-metal hydride batteries, I think nickel-metal hydride batteries have a longer lifespan, but nickel-metal hydride batteries have two disadvantages, one disadvantage is that the charging time is particularly long, and the other disadvantage is that nickel-metal hydride batteries have memory, and they can only be charged again after the battery is discharged, unlike lithium batteries, which can be charged at any time, which is the most headache.

1.The difference in voltage is that the single voltage of a lithium battery is, while the battery of a single NiMH battery is.

2.Lithium batteries have no memory effect, they are over when they are used up, and there will be no accumulation of information to occupy memory, while nickel-metal hydride batteries have a memory effect, and there will be accumulation of information, which is more suitable for the type of digital camera.

3.Lithium batteries do not contain heavy metals (cadmium), so they are cheaper than nickel-metal hydride batteries in terms of manufacturing costs.

4.The manufacturing and use of lithium batteries is more environmentally friendly, no pollution, and is a green environmental protection product, which has more advantages in development.

5.The specific capacity of lithium battery is high, and the specific capacity is the electric energy (wh) contained in the unit volume and weight, that is, the capacity is higher than the capacity of the nickel-metal hydride battery under the same circumstances, which is more in line with the customer's requirements for high-capacity batteries.

6.The cycle life of lithium batteries is longer than that of nickel-metal hydride batteries, that is, under the same circumstances, lithium batteries are used longer than nickel-metal hydride batteries.

7.Lithium battery specifications are more specific than nickel-metal hydride batteries, and the versatility is not so strong, like No. 5 (AA) nickel-metal hydride batteries and No. 7 (AAA) nickel-metal hydride batteries can be replaced with No. 5 (AA) carbon batteries or No. 5 (AA) alkaline batteries and No. 7 (AAA) carbon batteries or No. 7 (AAA) alkaline batteries In general, lithium batteries are the first choice for mobile phone batteries, and nickel-metal hydride batteries are more suitable for digital camera batteries.

Both types of batteries have a similar lifespan, but each has its advantages.

The reasons are as follows: 1. NiMH batteries are cheaper than lithium batteries.

Second, the model of nickel-metal hydride battery is fixed, and there is no worry about not being able to buy spare batteries in the future when using nickel-metal hydride batteries.

3. In terms of service life, nickel-metal hydride batteries are similar to lithium batteries, both of which are about two years.

Fourth, in the case of long-term use, both nickel-metal hydride batteries and lithium batteries will be passivated, and the load capacity will be reduced, but nickel-metal hydride batteries are more obvious than lithium battery passivation, but the recovery will be easier.

5. The internal resistance of lithium battery is lower than that of nickel-metal hydride, so the use effect is better, and it is more suitable for the discharge of large currents.

6. Under the same capacity, lithium battery is lighter than nickel-metal hydride.

The life of lithium batteries is much longer than that of nickel-metal hydride batteries, and lithium batteries belong to the newer version of nickel-metal hydride batteries, that is, the more optimized version. NiMH batteries are used before lithium batteries are available.

Lithium battery.

The specific energy is large, and the battery is small; The voltage of a single lithium battery is 3 times that of a nickel-metal hydride battery; There is no memory effect, and it can be used as you go. However, it cannot be charged at one time, so that the number of charging and discharging is too much, which will affect the life of the battery. Lithium batteries should not be stored for a long time, and they will permanently lose part of their capacity after a long time.

It is best to store it in the refrigerator after charging it to 40%.

3. Charging method.

Lithium battery charging requirements are different from NiMH batteries. With the full charge, the voltage of the lithium battery will slowly rise, which is also a sign to judge whether the lithium battery is full. If you want to charge the lithium battery independently, you need to pay attention to its charging method which is different from the constant current charging method used by nickel-metal hydride batteries.

It should be that lithium batteries have a longer lifespan than nickel-metal hydride batteries. This is the result of countless scientific experiments, and the life of the Lord must be more than six years. It can be charged and discharged multiple times. At the same volume, the capacity of lithium batteries is also larger than that of nickel-metal hydride batteries.

Surely lithium batteries have a longer lifespan. NiMH batteries are gradually being phased out. There is no memory when the lithium battery is charged, so it is more suitable for mobile phones.

In short, lithium batteries have a longer life than nickel-metal hydride batteries, and lithium batteries are an upgraded alternative to nickel-metal hydride batteries.

The national standard for the cycle life of nickel-metal hydride batteries is 500 times, but the company advertises 1000 times, because a single battery can reach 1000 times. The lithium battery pack has a long life, the lithium battery voltage platform is high, and the average voltage of the single battery is or, which is about equal to the series voltage of 3 nickel-cadmium batteries or nickel-metal hydride batteries, which is convenient for forming a battery power pack; Batteries with lithium ferrous phosphate as the positive electrode are charged and discharged with 1cdod, and there is a record of 1000 times of use; It has high power tolerance, among which the lithium ferrous phosphate lithium-ion battery used in electric vehicles can reach 15-30C charging and discharging capacity.

First of all, battery life usually refers to the number of cycles of charging and discharging, and each time a lithium battery is charged and discharged, it may cause the capacity to decrease, and the number of times it drops to 80% of the rated capacity is its cycle life. Therefore, the degradation of the life of the battery is unavoidable with the increase of the number of charging and discharging. What we can do is to pay attention to some details as much as possible during the use (charging and discharging) of the battery to avoid too fast attenuation.

During the use of the battery, the biggest impact on the battery life is nothing more than overcharge and overdischarge.

In response to these two points, the first is over-discharge (the battery is lower, the battery is lower. Developing good battery usage habits can avoid over-discharging the battery, that is, do not overuse the battery, and charge the battery in time when the battery is low. At the same time, it should be noted that electrical batteries that are not used for a long time should be removed in time.

Then there is the overcharge of the battery (the battery is higher, the battery is higher, and the charger is a more critical factor. At present, the chargers on the market are basically full and stopped, but the cut-off voltage accuracy of the charger is different, such as some setting deviations in between, and some. Of course, the smaller the deviation interval value, the better it can avoid overcharging.

Therefore, when choosing a charger, pay attention to the charging cut-off voltage in the parameter table.

Charger parameter table.

In addition, under normal use. It doesn't matter if the lithium battery is fully charged, because the lithium battery has no memory effect. Whether it is full or not is a matter of battery life.

However, if it is not suitable for a long time or long-distance transportation, it is usually not recommended to fully charge the battery, because the lithium ions will collect to the negative electrode, resulting in less lithium ions at the positive electrode, and the battery will break down after long-term storage. Of course, lithium batteries have self-discharge, and the monthly self-discharge is about 2%-5%. Long-term storage should take into account the situation of self-discharge to avoid over-discharge.

There are many elders who will always tell you when you get your first mobile phone that the new mobile phone needs to be fully discharged first, then charged for 12 hours, and then completely discharged, and this needs to be repeated 3 times. At the beginning, you must have done it honestly according to the words of your elders, but in fact, smartphones that have used lithium batteries no longer need such a troublesome battery maintenance process.

The NiMH battery that needs to be charged multiple times is the NiMH battery, which has a strong memory, and the process of repeated charging and discharging is also to allow the NiMH battery to obtain the maximum charge limit. But today's mobile phones use lithium batteries, and there is no need to repeat such a complex battery memory process. So, will lithium batteries always maintain the highest power limit?

The answer is necessarily no. Although lithium batteries are known for their durability, in the process of charging and discharging many times of battery cycles, it is inevitable that the upper limit of their power will be lost, which is formed over time, and the reason for the loss is in addition to normal charging, overcharging is the culprit.

Lithium batteries have a longer lifespan.

The voltage platform of lithium battery is high, and the average voltage of a single battery is equal to the series voltage of 3 nickel-metal hydride batteries, and the service life can reach more than 6 years, and it can be charged and discharged 1000 times.

I think depending on where these two batteries are used, lithium batteries are more suitable for mobile phones than nickel-metal hydride batteries, but in the use of digital cameras, because the demand for current of digital cameras is quite large, and the power consumption is much larger than that of mobile phones, nickel-metal hydride batteries are slightly better in terms of high current output.

The activity and life of lithium batteries are related to the activity of lithium ions, and the normal life of a lithium battery can reach more than 10 years, and the life of nickel-metal hydride batteries is related to the replacement of hydrogen ions in nickel rods, and the life is significantly shorter than that of lithium batteries.

NiMH batteries have a longer life than lithium batteries, NiMH batteries are generally about 500 1000 times, and the service life of lithium batteries is only two to three years, and generally lithium batteries can be charged and discharged 300-500 times.

NiMH battery life will be a little longer, this type of battery, its storage life can reach 40 to 50 degrees, but repeated charging, the number of repeated charges is less than that of lithium batteries, and the storage capacity of the same unit volume is not as good as lithium batteries! The only advantage is the long lifespan.

Lithium battery is a kind of battery made of lithium metal or lithium alloy as the positive and negative electrode material, using non-aqueous electrolyte solution, and has a long cycle life. Lithium-ion batteries have no memory effect and can be charged at any time; NiMH batteries have a certain memory effect, and it is best to be fully charged in ordinary use, so as not to affect the battery capacity.

Lithium batteries have a longer lifespan, and lithium batteries are used to replace hydrogen batteries! Assuming that the charge and discharge are completed every 2 days, the life of the lithium-ion battery can reach years (2000*2 365=).

The life of the power lithium-ion battery can reach 2000 cycles, and the life of the lithium battery is generally expressed according to the number of charges.

There are many factors that determine the service life of power lithium-ion batteries, including the characteristics of the system itself, as well as the manufacturing process and operating conditions. A high-quality battery system, coupled with scientific system management, can achieve a long service life. ”

The life of a lithium battery is "500 times", which refers not to the number of charges, but to a cycle of charge and discharge.

Now mobile phones are used lithium batteries, most of the lithium battery cycles are generally about 500 times, that is, from 0-100 for a cycle (a cycle of 100 for a cycle), when to 500 times after the mobile phone battery has weakened, the internal resistance of the battery becomes larger, the internal chemical element activity is reduced, and it enters the stage of rapid consumption.