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Lithium Battery ICR14500 750mAh 3.7V-Good Cycle Life
Application:
1.Industrial type:
The application fie lds of 18650 lithium batteries are mainly portable CD players, video recorders, solar energy systems, highway and railway signal lights, medical devices, portable measuring instruments, audio devices, electric tools (such asElectric drill, rotary chisel, electric saw, etc.), cordless telephone, transceiver, detection and analysis instrument, electronic weighing instrument, electric model toy, physical detection and numerical control logging instrument, data acquisition instrument, communication and command instrument, specialCommunication network equipment, electronic testing equipment, space equipment.
2.Agricultural type:
18650 the application fields of lithium batteries in agricultural products mainly include cutting machines, electric pesticide machines, electric picking machines, bagging machines, loosening machines, electric sprayers, unmanned water meters, field storage motors and electric harvester.Cutting machine, electric drill, electric pump, etc.
3. Civil type:
18650 lithium batteries are widely used in domestic and civil applications, such as mobile phones, tablets, notebook computers, electric toys, MP3 / MP4, earphones, chargers, aircraft models, mobile power supply, flashlight, charging lights, intelligent water meters,Gas meter, electricity meter, real-time clock, backup memory power supply, various instruments, instruments, equipment, smoke alarm and intelligent instrument, remote controller, etc.Lithium Battery Cell Lithium Battery Cell Model
Li-polymer Battery List
| Type | Max Thickness (mm) | Max Width (mm) | Max Length (mm) | Voltage (V) | Capacity (mAh) | Weight (g) |
| Li-P042255 | 0.42 | 22.5 | 55.5 | 3.7 | 20 | 0.7 |
| Li-P042760 | 0.42 | 27.5 | 60.5 | 3.7 | 20 | 0.7 |
| Li-P043228 | 0.42 | 32.5 | 28.5 | 3.7 | 12 | 0.5 |
| Li-P0452922 | 0.47 | 29.5 | 22.5 | 3.7 | 18 | 0.6 |
| Li-P2769101 | 2.9 | 69.5 | 101.5 | 3.7 | 2400 | 40.0 |
| Li-P302030 | 3.2 | 20.5 | 30.5 | 3.7 | 120 | 2.5 |
| Li-P306070 | 3.2 | 60.5 | 70.5 | 3.7 | 1400 | 30.0 |
| Li-P350919 | 3.7 | 9.5 | 19.5 | 3.7 | 35 | 1.3 |
| Li-P351725 | 3.7 | 17.5 | 25.5 | 3.7 | 110 | 3.7 |
| Li-P351836 | 3.7 | 18.5 | 36.5 | 3.7 | 80 | 3.0 |
| Li-P352730 | 3.7 | 27.5 | 30.5 | 3.7 | 280 | 6.0 |
| Li-P381018 | 4.0 | 10.5 | 18.5 | 3.7 | 40 | 1.5 |
| Li-P381620 | 4.0 | 16.5 | 20.5 | 3.7 | 100 | 3.5 |
Product performance:
1.The working voltage of single cell is as high as 3.6-3.8v.
2.Greater than the energy. At present, the actual specific energy of hyb steel shell battery is 100-135w.h/kg & 280-353w.h/l (2 times of Ni Cd and 1.5 times of Ni MH). With the development of technology, the specific energy can reach as high as150 w.h/kg and 400 & w.h/l.
3.Long service life. The service life of 18650 lithium battery is very long. The cycle life of 18650 lithium battery is more than 500 times, which is more than twice that of ordinary battery.
4.Good safety performance, no pollution, no memory effect. As the predecessor of Li ion, Li ion battery has short circuit due to its easy formation of dendrite lithium, which shortens its application fieldThere are some pollution elements in the environment. One of the disadvantages of some Ni Cd batteries is "memory effect", which seriously restricts the use of batteries, but there is no such problem in Li ion.
5.Large capacity. The capacity of 18650 lithium batteries is generally between 1200mAh and 3600mAh, while the capacity of general batteries is only about 800. If 18650 lithium batteries are combined to form 18650 lithium batteries, then 18650 lithium batteries will be used Group a can break through 5000 MAH at will.
Performance Curves of Lithium Cell:
1.Lithium Cell Charge Curve (Charge at 1C)
2. Lithium Cell Discharge Curve (Discharge at 1C )
3. Lithium Cell Cycle Life Curve
How Much Does Temperature Change Affect Lithium Batteries?
For lithium batteries, there is currently no clear theory in the industry to support the inevitable relationship between internal resistance, discharge platform, life, and capacity under various temperature performance. The relevant calculation formulas and mathematical models are still in the groping stage. In general, lithium batteries are not sensitive to the temperature in the range of 0-40°C, but once the temperature exceeds this range, the life and capacity will be compromised.
Temperature has the greatest impact on the charging and discharging functions of lithium batteries. The electrochemical reaction at the electrode/electrolyte interface is related to the ambient temperature. The electrode/electrolyte interface is regarded as the blood of a lithium battery.
If the temperature drops, the response of the electrode will also decrease: assuming that the voltage of the lithium battery remains stable and the discharge current decreases, the power output of the lithium battery will also decrease. If the temperature rises, the opposite is true, that is, the output power of the lithium battery will rise. Temperature also affects the transfer speed of the electrolyte, which accelerates when the temperature rises, and slows when the temperature drops: the charging and discharging functions of lithium batteries are also affected.
The upper and lower limits of the working environment temperature of the lithium battery pack are relatively high, which can meet most of the environmental temperature requirements, but the temperature still has an impact on the working efficiency, and the temperature of the lithium battery pack is too low, and the capacitance of the lithium battery pack will drop even more. Fast, and the internal resistance will increase.
The working environment temperature of the lithium battery has a certain influence on the internal resistance, heat consumption rate, discharge capacity, cycle life and consistency of the battery state. When we use lithium iron phosphate battery packs, we must try our best to control the working environment under a better temperature environment.
Abnormal temperature will have a huge impact on the performance and life of lithium-ion batteries, and may even cause safety problems such as thermal runaway. Therefore, lithium batteries with excellent heat dissipation are qualified lithium batteries.
