18650 power lithium battery is now widely used in the electronics market, loved by customers of high rate electronic products, in fact, many people still do not know much about 18650 power lithium battery, then we can take the next amount of lithium battery manufacturers to understand the 18650 power lithium battery it.
The advantages of 18650 lithium battery
Usually think of the lithium battery no-load voltage to 3.0V below the electricity used up (the specific value needs to see the threshold value of the battery protection plate, for example, as low as 2.8V, there are also 3.2V). Most lithium batteries cannot be discharged below the no-load voltage of 3.2V, otherwise too much discharge will damage the battery (usually lithium batteries on the market are basically used with a protection board, so too much discharge will also lead to the protection board can not detect the battery, and thus can not charge the battery).
4.2V is the highest limit of battery charging voltage, usually think of lithium battery no-load voltage charged to 4.2V is considered full of electricity, battery charging throughout the process, the battery voltage in 3.7V gradually rise to 4.2V, lithium battery charging can not be no-load voltage charged to more than 4.2V, or it will also damage the battery, which is the unique place of lithium batteries, usually 18650 lithium battery has the following advantages.
1, the use of a wide range of coverage
Laptop computers, handheld walkie-talkies, portable DVDs, instruments, audio equipment equipment, models, toys, surveillance cameras, digital cameras and other electronic equipment.
2, Series connection
Can be connected in series or in parallel to form an 18650 lithium battery pack.
3, Small internal resistance
The internal resistance of polymer cells is smaller than that of liquid cells under normal circumstances, and the internal resistance of domestic polymer cells can even be as low as 35mΩ, which greatly reduces the self-consumption of the battery and extends the standby time of mobile phones, and can fully meet the international standard. This kind of polymer lithium battery that supports large discharge current is a good choice for RC models and has become the most promising product to replace NiMH batteries.
4, No memory effect
It is not necessary to empty the remaining power before charging, which makes it convenient to use.
5. High voltage
The voltage of 18650 lithium battery is usually at 3.6V, 3.8V and 4.2V, much higher than the 1.2V of NiCd and NiMH batteries.
6, High safety performance
18650 lithium battery has high safety performance, no explosion, no combustion; non-toxic, non-pollution, certified by RoHS trademark; various safety performance in one go, the number of cycles is greater than 500 times; good high temperature resistance, discharge efficiency of 100% under 65 degrees. To prevent the short-circuit phenomenon of the battery, the positive and negative poles of 18650 lithium battery are separated. Therefore, the possibility of short-circuiting is reduced to a minimum. A protection plate can be added to avoid overcharging and over discharging of the battery, so that the service life of the battery can be extended.
7, Long service life
The service life of 18650 lithium battery is quite long, and the cycle life can reach more than 500 times in normal use, which is more than twice as long as ordinary batteries.
8, Large capacity
18650 lithium battery capacity is generally 1200mah ~ 3600mah, while the general battery capacity is only about 800, if the combination of 18650 lithium battery to become 18650 lithium battery pack, that 18650 lithium battery pack is casually can break through 5000mah.