What is the difference between 18650 battery and ordinary lithium battery?

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.

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 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 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 lithium batteries can discharge ratio is higher.

With phosphorus acid lithium ferrous materials IPower lithium battery and ordinary lithium batteries, for example, although the anode materials are system and structure are the same, but the performance of lithium battery anode materials are more small particles than normal (increase the surface area and speeding up chemical reaction rate), using the diaphragm material and electrolyte conductivity is better, in addition dynamic in anode lead is extremely ears, also more than the ordinary type (reduced ear resistance and satisfy more current).

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 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 lithium battery voltage is 4.2 V, highest 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.

18650 battery of battery and power battery and digital tools

Power battery: discharge current big time so require internal resistance when using low temperature not too high

Digital battery: small discharge current is relatively common battery as long as the cycle for a long time is OK

Tool: battery discharge current is big, big power cannot be used for a long time

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 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 lithium battery voltage is 4.2 V, highest 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.

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 across the electrodes in lithium batteries which power the derivation of extremely ears, also more than ordinary 18650 lithium batteries (reduced ear resistance and satisfy 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 as early as 1912 by GilbertN. Lewis is put forward in this study.In the 1970 s, M.S.W hittingham and began to study are put forward lithium ion batteries.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.

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 across the electrodes in lithium batteries which power the derivation of extremely ears, also more than ordinary 18650 lithium batteries (reduced ear resistance and satisfy 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 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.

Type 18650 Li-ion battery is lithium battery, which are frequently used in electronic products is often used as batteries in laptop battery.The definition of the model law for: such as the type 18650, namely the battery to 18 mm in diameter, length of 65 mm, cylindrical shape of the battery.

Cobalt acid lithium

Single section is commonly: nominal voltage of 3.7 V [1]

Charging voltage is commonly: 4.20 V to 4.20 V / 4.35 V [2]

Minimum discharge termination voltage is commonly: 2.75 V

Maximum charging termination voltage: 4.20 V (Sanyo, Samsung, LG, etc of the large capacity 18650 charging termination voltage of 4.30 V or 4.35 V, and Panasonic is still at 4.20 V)

Diameter: 18 + / - 0.2 mm

Height: 65 + / - 0.2 mm

Maximum capacity: 13 years can do 3400 mAh (3400 mAh Panasonic)

The lithium battery production this type of the world's biggest manufacturers have Sanyo (has been Panasonic), Panasonic, Samsung, SONY, etc.

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