How long is the battery life?

The life of nickel-metal hydride batteries is slightly longer than that of nickel-cadmium batteries, all of which are more than 5 years old. The nickel-metal hydride battery memory effect is very small and can be ignored. The national standard for the recycling life of nickel-metal hydride batteries is 500 times(80 % DOD), and enterprises promote 1,000 times. A single battery can be achieved. Nickel-metal hydride battery storage time of more than 10 years, no problem, preferably recharging storage.

The charging method of full charge and full charge seriously shortens the life of nickel-metal hydride batteries. A mismatched charger may cause the battery to overcharge and shorten the battery life. Using nickel-metal hydride batteries, care should be taken not to discharge too much, otherwise seriously affect life.

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The recommendations are as follows:

Do not fully charge or discharge. The equipment should be about 50 % charged.

If you store the device in a state where the battery is completely depleted, the battery may fall into a deep discharge state, resulting in the consequences of no recharging;

On the contrary, if you store a fully charged device for a long period of time, you may lose part of your battery capacity, which will shorten the battery life.

2, turn off the device power, thus avoiding additional battery use.

1, nickel-metal hydride battery memory effect is very small, negligible.

2, nickel-metal hydride battery cycle life national standard 500 times(80 % DOD), enterprise propaganda 1000 times, a single battery can be achieved.

3, nickel-metal hydride battery storage time of more than 10 years, there is no problem, it is best to charge storage.

4, full charge full charging method, seriously shorten nickel-metal hydride battery life.

5, a mismatched charger, may cause the battery overcharge, shorten the battery life.

6, using nickel-metal hydride batteries, should be careful not to discharge, otherwise seriously affect life.

7, use a group of nickel-metal hydride batteries, but also pay attention to the battery overcharge.

8, adopt shallow and shallow use of the method, life can be increased several times.

A rechargeable battery is a rechargeable battery with a limited number of charges and is used in conjunction with a charger. The market generally sells No. 5 and No. 7, but there is also No. 1. The benefits of rechargeable batteries are economic, environmental protection, sufficient power, and appliances suitable for high power and long-term use(such as Walkman, electric toys, etc.). The voltage of the rechargeable battery is lower than that of the identical disposable battery. The AA battery(charge 5) is 1.2 volts, and the 9V rechargeable battery is actually 8.4 volts. The general charge can now be about 1,000 times. As of February 2012, there are only five types: nickel cadmium, nickel hydrogen, lithium ions, lead storage, and ferrolithium.

The active substance on the positive plate of the lead-acid battery is lead dioxide, the active substance on the negative plate is sponge pure lead, the electrolyte is a sulfuric acid solution with a certain concentration, and the electromotive force between the plates is about 2V.

The active material on the positive plate of the nickel-cadmium battery is nickel oxide powder, and the active substance on the negative plate is cadmium oxide powder. The active material is wrapped in perforated steel belts, and after pressurized molding, it becomes the positive and negative plate of the battery. The electrolyte is usually a potassium hydroxide solution. The open circuit voltage of the battery is 1.2 V.

The positive plate material of nickel metal hydrogen battery is nickel oxide powder, the negative plate material is hydrogen absorption alloy, and the electrolyte is potassium hydroxide solution. The open circuit voltage of the battery is 1.2 V. Li-ion batteries with LiCoO2 composite metal oxides forming anodes on aluminum plates, lithium carbon compounds forming cathode on copper plates, polyolefin film partitions with submicron micropores between plates, electrolytes For organic solvents, the open circuit voltage is 3.6 V.

Lithium polymer electricity is an improved type of lithium ion battery. There is no battery liquid. Instead, polymer electrolytes are used, which are more stable than ion batteries. Open circuit voltage 3.6 V.

Battery capacity represents how much power the battery can store. The number we see on the battery packaging generally refers to the battery capacity logo. Used in units of amperage or milliam. It is a composite unit consisting of the product of current units and time units, representing the ability of the battery to continuously discharge under a constant current. A fully charged battery can discharge for 10 hours with a 200mA current. Multiply the current with time and we can get a capacity of 2000mA.H for this battery. If it is discharged with 400mA, the available time is 5 hours.

Energy density: The amount of electrical energy contained per unit volume or unit weight. For the same charge requirement, batteries with high energy density can be smaller in volume and lighter in weight.

C current: The amount of current that will discharge the filled battery within one hour or fill the exhausted battery. In fact, it is the numerical size of the time capacity. For a 1800mA capacity battery, the C current is 1800mA. For a 2000 mA capacity battery, the C current is 2000 mA.

Open circuit voltage: refers to the potential difference between the two poles of the battery.

Memory effect: the new battery, the electrode material of the small grain, can obtain the maximum surface area of the electrode. Because the battery content is crystallized due to use, after the crystallization is formed, the grain increases, also known as passivation, which reduces the available electrode area, and the growing grain will cause the self-discharge to increase, reducing the battery capacity., performance damage. This is the memory effect. The memory effect is due to the incomplete charging and discharge of parts of the battery.

Self-discharge rate: After charging the battery, even if it is not used, it will gradually lose its power. The higher the general temperature, the more significant the self-discharge.

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