The difference between nickel-metal hydride battery and lithium battery

My friends often ask me, nickel metal hydride batteries and the lithium battery, which one is better. In fact, it is really difficult to answer this question. It depends on what products you use. For example, if you choose to use on mobile phone tablet electric bicycle, I would suggest using lithium battery, because the circulation service life is long. As for digital camera, it has large demand for electric traffic, and has larger power consumption than mobile phone. In this case, Ni-Mh batteries have large current output.

Lithium battery and nickel metal hydride batteries have the following differences:

1, the lithium battery only 3.2 and 3.7 v voltage, monomer 1.2 v Ni-Mh batteries.

2, the lithium battery has no memory effect, nickel metal hydride battery memory effect.

3, lithium battery does not contain heavy metals (cadmium).

4, the manufacture of lithium-ion batteries and use link environmental protection, no pollution.

5, high specific capacity lithium battery, specific capacity per unit volume, the weight of the electrical energy (wh).

6, the unit of the lithium battery price is high.

7, the circulation of the lithium battery life is long.

Through force can wang make me introduce everybody for lithium batteries and nickel-metal hydride batteries have a full understanding of, you can choose our goods, and to determine which battery is better

Nickel metal hydride batteries (NI-MH) is improved by nickel cadmium battery (NiCdbattery), and the absorbing hydrogen to make the metal (rare earth alloy or the observatory) instead of cadmium (Cd), can be recycled, belongs to the environmental protection batteries.

The advantages and disadvantages of nickel metal hydride batteries (NI-MH) is as follows:

The same volume capacity is higher, the common v batteries, for example, nominal capacity is 2900 mah of Ni-Mh batteries (mah), and nickel cadmium battery only 1100 mah (mah).

Ni-Mh batteries than zinc carbon batteries or alkaline batteries have a larger output current, relatively more suitable for high power products, some of the dynamic type of special models than ordinary nickel-cadmium batteries have even larger output current.

Less obvious memory effect, and even many brands of Ni-Mh batteries have declared that no memory effect.

Long cycle life, under the condition of the correct use of recycled more than 500 times.

Old model of high nickel metal hydride battery self-discharge rate, full electric room temperature storage self-discharge rate of 30 ~ 35%, but the new Ni-Mh batteries have a fairly low self-discharge rate.

High temperature resistant performance is poor, try not to let the battery temperature is higher than 45 degrees.Otherwise life will soon be lower, the battery internal resistance will increase.

Excessive charging a great influence on battery life, has certain risk, so stop charging when the battery is full.

Lithium battery is than Ni-Mh batteries for mobile phones, but in the digital camera, digital camera for electric traffic demand is quite large, with mobile phone power consumption also relatively big many, this part in the large current output Ni-Mh batteries but slightly better.

Nickel-metal hydride and nickel cadmium battery voltage is 1.2 V. But the volume of nickel metal hydride is higher than energy than nickel-cadmium batteries. According to the different factors of making battery technology, nickel cadmium battery has a strong memory effect, nickel metal hydride memory effect is small. At the same time contains heavy metal cadmium nickel cadmium battery, has banned the use of at present. But due to the excellent nickel cadmium battery discharge performance, in terms of a lot of electric tools, nickel metal hydride batteries are still not a substitute for nickel cadmium battery. So in ROSH standards for nickel cadmium battery used in power tools industry.

Lithium batteries and nickel-metal hydride batteries mainly lies in the fact that the difference between a lithium battery is suitable for use on mobile phones, but in a digital camera, due to the current demand is quite large, and the power consumption is much larger than mobile phones, so use Ni-Mh batteries is better.

The advantages and disadvantages of lithium battery

Advantages: no memory effect, lighter in weight.

Disadvantages: high cost, current is small, not too full charge resistance (compared with nickel metal hydride).

Lithium-ion batteries have a li-ion battery (rechargeable) and secondary li-ion battery (rechargeable), secondary lithium electricity divides Li - ionLithium ion batteriesAnd Li - PolymerLithium polymer battery。

General digital camera using a secondary li-ion battery (rechargeable), compared with Ni-Mh batteries, light in weight and volume energy density was 48% higher than it.Because of this, production and sales of lithium ion secondary battery are gradually more than Ni-Mh batteries.The battery discharge little self, and no memory effect, charge and discharge frequency can reach more than 600 times, especially in recent years was developed by the Li - Polymer lithiumPolymer battery, in addition to a smaller, but also general battery cylinder or square shape without limit, the weight is lighter.

Lithium battery for not too full charge, if careless use of the will is in danger of explosion, therefore need built-in control IC, prevent too full charge, but the cost is also relatively improve many.Lithium batteries because the specification is not unified, so will buy battery case after organic kind of production.But it has improved a lot.

The advantages and disadvantages of Ni-Mh batteries

Advantages: low prices, strong commonality, large current, environmental protection and stability.

Disadvantages: large weight, battery life is shorter.

Nickel metal hydride battery design stems from a nickel cadmium battery, but on improving nickel cadmium battery memory effect, have great progress.The main change in use of cadmium in hydrogen storage alloy to replace the original negative, so the Ni-Mh batteries can be said to be the typical representative of material innovation.And pollution caused by Ni-Mh batteries, smaller than containing cadmium nickel cadmium battery will be many, therefore, the nickel cadmium battery has been gradually replaced by the Ni-Mh batteries.

Lithium battery except minority has a lithium-ion battery can be used (NIKONEN EL1 and 2 cr5) most of them are no alternative battery, this to want to go abroad for a long time, or a large number of users is very troublesome, nickel metal hydride batteries had no such problems, using digital cameras of Ni-Mh batteries can often use alkaline battery replacement.

In recent years, increasing use Ni-Mh batteries, digital camera battery manufacturers also bullish on the market, with high capacity of nickel metal hydride rechargeable batteries, make Ni-Mh battery technology by leaps and bounds, the capacity is becoming more and more big, use the same time with lithium battery, the charger is becoming more and more advanced, charging time shortened significantly.

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