Battsys Li-ion Battery 18650 Excellent rate performance and low internal resistance.Long cycle life, charge and discharge up to 10,000 times.Fast charge, intellectual property rights for lithium battery charging technology.
An 18650 is a lithium ion rechargeable battery, a whole lot of power in a tiny cell. Correctly called “18650 cell” the 18650 cell has voltage of 3.7v and has between 1800mAh and 3500mAh.. 18650s may have a voltage range between 2.5 volts and 4.2 volts, or a charging voltage of 4.2 volts, but the nominal voltage of a standard 18650 is 3.7 volts. There are two types; protected and unprotected.
Battsys Li-ion Battery 18650 Excellent rate performance and low internal resistance.Long cycle life, charge and discharge up to 10,000 times.Fast charge, intellectual property rights for lithium battery charging technology.Wide range of temperature adaptation, excellent high and low temperature capacity performance.Comply with safety test standards for high temperature external short-circuit, over charge, drop, crush, impact, etc.
Battsys is the best Li-ion Battery Manufacturer with Premium Quality, Fast Global Shipping, 3-7 Days Lead Time, Accept OEM & ODM, and Small orders available.The best Li-ion Battery can be used for lots of consumer devices:
High safety LiFePO4 battery,long cycle life, Fast Charging
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High rate Discharge, fast charge, long cycle life
Learn More18650 lithium batteries are mostly used in laptop batteries due to their high capacity per unit density. In addition, 18650 lithium batteries are widely used in various electronic fields due to their excellent stability in work: commonly used in high-grade flashlights, portable power supplies, wireless data transmitters, electric heating and warming clothes and shoes, portable instruments, portable lighting equipment, portable printers, industrial instruments, medical instruments and so on. Medical instruments and so on.
Excellent rate performance and low internal resistance.
Long cycle life, charge and discharge up to 10,000 times.
Fast charge, intellectual property rights for lithium battery charging technology.
Wide range of temperature adaptation, excellent high and low temperature capacity performance.
Comply with safety test standards for high temperature external short-circuit, over charge, drop, crush, impact, etc.
Certification: UL, IEC, UN38.3, ROHS, REACH, etc.
18650 li-ion cells are cylindrical rechargeable cells, shaped like giant AA alkaline batteries. They have a higher nominal discharge voltage of 3.7V, which gives them a signifcant power advantage over the older alkaline(1.5V) and nimh/nicad(1.2V) chemistries. 18650 li-ion cells can be found in laptops, power tool battery packs, electric cars and countless consumer goods.
18650 lithium battery size is not the same as aa battery
AA batteries are a class of batteries made of lithium metal or lithium alloy as the anode material, using a non-aqueous electrolyte solution. Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium ion batteries. Lithium-ion batteries do not contain lithium in the metallic state and are rechargeable.
Lithium metal batteries are disposable and cannot be recharged.
The numbers 18650, represent the external size: 18 refers to the battery diameter 18.0mm 650 refers to the battery height 65.0mm.
Model number 5 battery is 14500, diameter 14mm, length 50mm.
18650 lithium battery single nominal voltage is generally: 3.6V or 3.7V
Charging voltage is generally: 4.20V
Minimum discharge termination voltage is generally: 2.75V, below this voltage can easily lead to a serious decline in battery capacity or even scrap.
Maximum charge termination voltage: 4.20V
Advantages of 18650 Li-ion battery.
1. Small size and light weight
2. High energy density, can provide longer use time;.
3. Good discharge performance and availability.
4. Environmentally friendly, can make full use of energy.
5. Capacity can be customized, can be adjusted according to the demand.
6. Reasonable price, cost-effective.
The service life of 18650 lithium battery is only three to five years。The lifespan of an 18650 Li-ion battery depends on usage and maintenance. Generally, it can be recharged 500-1000 times. With proper care, such as avoiding deep discharges and high temperatures, the lifespan can extend to around 2000 cycles.
The main difference between 18650 Li-ion batteries and other lithium-ion batteries is their standardized size (18mm x 65mm). Additionally, 18650 batteries typically offer higher energy density and longer cycle life, making them suitable for applications requiring high capacity and longevity.
To properly charge 18650 Li-ion batteries, please use the original charger to avoid overcharging or over-discharging. It is now believed that the more correct charging algorithm for Li-ion batteries is "Measure the battery voltage - 3V or more (if less than 3V, then small current charging to 3V) - Normal charging - Charge to 4.2V (allowable error of 5%) or charging current is less than 0.01C - Cut-off. A really smart charger is mainly characterized by A truly intelligent charger, the main performance is whether the current is automatically adjusted according to the battery voltage at the beginning, and whether it is cut off after full, more perfect charger will also be in the judgment of whether it is full with additional temperature pro-measurement, time monitoring, current monitoring and so on.
Higher total cell capacity.
The battery capacity (measured in milliamp-hours or mAh) of 18650 cells is limited to a maximum of around 3600mAh because of its size.
However, the 21700 battery is able to reach a maximum capacity of 5000mAh – a 42% increase.
For flashlight or e-cigarette users, that means up to 142% of the previous run time on a single charge, which is invaluable for heavy users. And since they’re still less than 1″ in diameter, flashlights using these batteries can still fit in standard 1″ weapon mounts and holsters!
Brand / Manufacturer
The first thing to consider when choosing an 18650 battery for your device or project is the battery brand. Not all brands are created equal and often times you will find are not very truthful in their battery ratings. This is especially true when discussing the Chinese re-wrapping brands. The goal of any manufacturer or brand is to sell as many batteries as possible but some companies have been known to exaggerate their ratings to appear to offer a better product than the other. This practice of exaggerating battery specs is unlawful and can be very dangerous to consumers if gone unchecked. Thankfully, there is a watchdog in the lithium ion battery industry known as the battery mooch who provides thorough testing and will call out these companies for their unlawful practice.
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E-Mail: inquiry@fentbattery.com
Address: No.3, Dongli Road, Xili, Dongyong Town, Nansha District, Guangzhou City, China
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