Which is better, LiFePO4 battery or 18650 battery?

Lithium iron phosphate has high cost but low volume. It has good stability, strong consistency and long cycle life. 18650 common battery is lithium battery, but LiFePO4 battery is relatively rare. Lithium iron phosphate used as a lithium battery material has been appeared in recent years. Domestic development of large-capacity lithium iron phosphate batteries are in July 2005. Its safety performance and cycle life is unmatched by other materials. The most important of these is power battery technology index. 1C charge and discharge cycle life is over 2000 times. Single battery with charging voltage 30V does not burn, puncture but not explode. Lithium iron phosphate cathode material make the large capacity lithium ion batteries are more likely to use in series. In order to meet the needs of the frequent electric charge and discharge, it has advantages of non-toxic, no pollution, good safety performance, wide raw material sources, low cost and long service life. It is the ideal of a new generation of lithium ion battery cathode material. This project belongs to the development of energy functional materials in high-tech projects. It is included in the national "863" plan, "973" plan and the period of "11th five-year plan" key support areas of high technology industry development planning. Lithium ion batteries are extremely lithium iron phosphate material. This new material is not the past of lithium ion battery cathode material LiCoO2, LiMn2O4 or LiNiMO2. Its safety performance and cycle life is unmatched by other materials. The most important of these is power battery technology index.1 C charge and discharge cycle life is over 2000 times. Single battery with charging voltage 30V will not burn nor explode, puncture but not explode. Lithium iron phosphate cathode material makes the large capacity lithium ion battery easier to be used in series.

18650 lithium battery than ordinary battery good advantages are: 1. The large capacity: 18650 lithium battery capacity is 1200 mAh ~ 3600 mAh commonly between, and battery capacity of only 800 or so commonly, if combine 18650 lithium batteries into 18650 lithium-ion battery pack, the 18650 lithium-ion battery pack is just can break through 5000 mah.2. Long life: 18650 lithium battery service life is long and cycle life of up to 500 times more than normal use, is more than twice that of the ordinary batteries.3. High safety performance: 18650 lithium battery safety performance is high, no explosion, not burning; Non-toxic, non-polluting, through the RoHS certification trademark; All the same safety performance, cycle number greater than 500 times; High temperature resistant performance is good, 65 - degree condition to devolve electricity efficiency up to 100%.

In order to prevent the short circuit batteries, 18650 across the electrodes of lithium battery is separated. So it short-circuit phenomenon may have fallen to acme. Can be equipped with protective plate, avoid the battery overcharge, it also can prolong the service life of the battery.4. High voltage: 18650 lithium battery voltage is generally in 3.6 V, 3.8 V and 4.2 V, far higher than that of nickel cadmium and nickel metal hydride battery voltage is 1.2 V.

18650 lithium batteries

1. Large capacity lithium battery capacity is 1200 mAh ~ commonly 18650 3600 mAh, the battery capacity is only 800 or so commonly, if combine 18650 lithium batteries into 18650 lithium-ion battery pack, the 18650 lithium-ion battery pack is just can break through 5000 mAh.

2. Life 18650 lithium battery service life is long, long cycle life of up to 500 times more than normal use, is more than twice that of the ordinary batteries.

3. Safety performance is high, 18650 lithium battery safety performance is high, no explosion, not burning; Non-toxic, non-polluting, through the RoHS certification trademark; All the same safety performance, cycle number greater than 500 times; High temperature resistant performance is good, 65 - degree condition to devolve electricity efficiency up to 100%.In order to prevent the short circuit batteries, 18650 across the electrodes of lithium battery is separated. So it short-circuit phenomenon may have fallen to acme. Can be equipped with protective plate, avoid the battery overcharge, it also can prolong the service life of the battery.

4. 18650 lithium battery voltage is generally high voltage at 3.6 V, 3.8 V and 4.2 V, far higher than that of nickel cadmium and nickel metal hydride battery voltage is 1.2 V.

The earliest application of lithium-ion batteries is in the cardiac pacemaker. Lithium battery self-discharge rate is extremely low, the advantages of discharge voltage flat, which makes the pacemaker implantation in the human body for a long time operation without recharging the batteries. Lithium batteries tend to have higher than the nominal voltage of 3.0 v, is more suitable for integrated circuit power supply.

General quality standard of lithium-ion batteries is at least 300 times.

Typically 90% of the charge and discharge capacity after only the first 10 times, 300 times, the capacity will be about 70% of the original, and then gradually decline.

18650 power battery support large current discharge, may reach 20 times the capacity of current, 18650 normal lithium battery support only 1 times the discharge capacity, that is to say, an ordinary battery 2600 mAh, maximum discharge current is 2600 ma.

18650 power battery capacity generally smaller than normal battery capacity. Estimates will not more than 2000 mAh. Is in commonly 1000 mAh ~ 1800 mAh.

Generally the working voltage of power battery than normal lithium battery voltage is lower. Ordinary highest lithium battery charging voltage is 4.2 V, Power lithium battery the highest charging voltage is 3.65 V or so. Common nominal voltage is 3.7 V lithium-ion batteries, power lithium battery nominal voltage is 3.2 V.

1, 18650, performance of lithium battery anode materials are more small particles than the average 18650 lithium batteries (increase the surface area and speeding up chemical reaction rate), using the diaphragm material and electrolyte conductivity is better.

2,18650 power lithium batteries in the cathode lead very ears, also more than ordinary 18650 lithium batteries (reduced ear resistance and meet more current).

3, 18650 power battery support large current discharge, may reach 20 times the capacity of current, 18650 normal lithium battery support only 1 times the capacity of discharge.

4, 18650, general power battery capacity than the average about 18650 lithium battery capacity is twice as small.

The highest, ordinary lithium battery voltage is 4.2 V, power lithium battery charging voltage is 3.65 V or so. Common nominal voltage is 3.7 V lithium-ion batteries, power lithium battery nominal voltage is 3.2 V." Lithium battery", is a kind of lithium metal or lithium alloy anode materials, the use of water battery electrolyte solution. Lithium battery is as early as 1912 by Gilbert N. Lewis is put forward in this study. In the 1970 s, M.S.W Hittingham and began to research on lithium ion battery are put forward. Due to the lithium chemistry is very lively, making lithium metal processing, storage, use, very high demand on the environment. So the lithium battery has not been applied for a long time. With the development of science and technology, the lithium battery has now become the mainstream.

Lithium battery can be roughly divided into two categories: lithium battery and lithium ion batteries. Lithium ion battery does not contain lithium metal state, and can be recharged. The fifth generation of rechargeable battery product lithium battery was born in 1996, its security, specific capacity, self-discharge rate and cost performance is better than that of lithium ion batteries. Because of its high technical requirements limit, now only a few countries in the production of this kind of lithium battery.

18650 is the ancestor of lithium ion battery - Japan's SONY company in order to save costs and set a standard of lithium ion battery model, including 18 said to 18 mm in diameter, 65 said length is 65 mm, 0 means for cylindrical batteries.

Common batteries are divided into 18650 lithium ion battery and lithium iron phosphate battery. The nominal voltage of lithium ion battery is 3.7 V, while end-off voltage is 4.2V. The nominal voltage of LiFePO4 battery is 3.2V, end-off voltage is 3.6V, the capacity is 1200 mAh - 1200 mAh, and common capacity is 2200 mAh - 2600 mAh.

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