Knowledge Base - What is an 18650 Battery

Home »
Knowledge Base »
FAQ »
What is an 18650 Battery
Cannot Log in Quality Complaint Some Parts Are Missing Shipment Payment Orders US Shipping Place quick order Vehicle Computer Basics How to Use Handheld Computer in Medical Care Touch Screen Basics Vehicle Computer Features Monitor Power Board Basics The Classification of Barcode Scanner How to Use Handheld Computer in Power Inspection How to Choose a Handheld Computer How to Choose an Industrial PDA What is a Handheld Computer What is a Laser Scan Engine IBS Points How to Select Car Power Adapter Chargers Vehicle Computer Detection Method How to Choose a Barcode Scanner for Supermarket How to Repair Vehicle Computer How to Choose a Barcode Scanner for Warehouse FAQs about Vehicle Computer Barcode Scanner Test Process Car Power Adapter Charger How Do LCD Screens Work The Difference Between The Mid-Range and High-End What If the Barcode Scanner is Unrecognizable Industrial Vehicle Computer Wearable Computer Basics Wearable Computer Applications Wearable Computer Application in Agriculture Honeywell Orbit MS7120 Barcode Scanner How to Set up Automatic Wrap for Motorola DS4208 Motorola Symbol DS9808 Barcode Scanner Symbol MC9200/MC92N0 Mobile Handheld Computer Zebra ZM400 Barcode Printer Zebra MZ220 Mobile Barcode Printer Motorola Symbol MC45 Handheld Mobile Computer MC3300 Handheld Mobile Computer MC9500-K Handheld Mobile Computer Symbol VC5090 Vehicle Mounted Computer Symbol MC9090-G Handheld Mobile Computer Symbol DS6708 Barcode Scanner Troubleshooting How to Identify the Symbol Barcode Scanner Model Symbol LS4208 Barcode Scanner Troubleshooting Symbol LS4278 Barcode Scanner Troubleshooting MS7120 Orbit Barcode Scanner Troubleshooting How to Choose Motorola Symbol Barcode Scanners Motorola Symbol DS6707 Barcode Scanner Symbol LS9203 Laser Barcode Scanner Installation How to Use Barcode Scanner in Production Symbol MC75A0 Handheld Mobile Computer Symbol MC65/MC659B Handheld Mobile Computer MC36 Handheld Mobile Computer MC1000 Handheld Mobile Computer How to Use Motorola Symbol DS9808 QR Code Scanner Honeywell MS7580 QR Code Scanner Troubleshooting Why Need a Special Printer for Printing Labels Motorola MC55A0 Series Handheld Mobile Computer What is a Barcode Scanner What is a Barcode Printer How to Clean a Printer Head Troubleshooting Common Barcode Printer How Do Touch Screens Work Motorola MC32N0 Handheld Computer What are Vehicle Computers Technical Requirements Prospect of PDA in Medical Industry Motorola LS7708 Scanning Platform Troubleshooting Motorola LS4208 Barcode Scanner Buzzer Definition Industrial and Commercial Barcode Scanner How Does Motorola LS4278 Scanner Match the Cradle Motorola LS9208 Hands Free Barcode Scanner Choosing a Barcode Scanner for Production Line Motorola MC3100 Handheld Mobile Computer Motorola WT4000 Wearable Compter Zebra TC8000/TC80N0 Handheld Mobile Computer Motorola Symbol RS409 Ring Scanner Motorola Symbol MC9090-G Handheld Mobile Computer Zebra 105SL Troubleshooting Motorola Symbol MC9000 Handheld Mobile Computer Motorola Symbol MC40 Handheld Mobile Computer Motorola Symbol MC50 Handheld Mobile Computer Motorola Symbol WT4090 Wearable Computer Honeywell Dolphin 9900 Mobile Computer Honeywell Dolphin 7600 Mobile Computer Honeywell Dolphin 7800 Mobile Computer Zebra TC55 Touch Mobile Computer Motorola Symbol MC3190 Handheld Mobile Computer Motorola Symbol MC92N0-G Troubleshooting Motorola Symbol RS507 Ring Scanner Intermec CK3 Handheld Mobile Computer How to Maintain Motorola Symbol MC70 Motorola Symbol MC32N0 Operating Instructions Motorola Symbol MC9190/MC92N0 Warm/Cold Boot Zebra ZM400 Printer Calibration Symbol MC92N0 Battery Management Symbol MC3300 VS. Symbol MC32N0 Zebra ZM400 Troubleshooting Zebra Barcode Printers Classifications Symbol SE955 Laser Scan Engine Setting by SSI Symbol VC5090 Vehicle Computer Troubleshooting How to Clean Boot for Intermec 70 Series What are the18650 Advantages and Disadvantages What is a Battery Protection Board What is the Role of the Battery Protection Board Zebra ZM400 Barcode Printer Maintenance Motorola Symbol LS4278 Wireless Barcode Scanner Symbol MC92N0 and Zebra DS3678 Connection Method Symbol MC92N0 Handheld Computer Troubleshooting How to Save the CE System Settings after Cold Boot FAQs about Symbol Barcode Scanners How to Re-burn the Symbol MC9000 Operating System How to Configure the Symbol MC9190 Wireless Networ Quality Issues Others

Knowledge Base

Need More Help?

18650 is the originator of lithium battery, a standard lithium-ion battery model that Japan SONY Company set in order to save costs. 18 represents a diameter of 18mm, 65 means a length of 65mm, and 0 represents a cylindrical battery.

The common 18650 batteries are divided into lithium ion batteries and lithium iron phosphate batteries. The nominal voltage of the lithium-ion battery voltage is 3.7V, the cut-off charge voltage is 4.2V, the nominal voltage of the lithium iron phosphate battery is 3.2V, the limited charge voltage is 3.6V, the capacity is usually 1200mAh-3350mAh, and the common capacity is 2200mAh-2600mAh.

Lithium batteries labeled 3.7V or 4.2V are the same. It's just that the manufacturer's label is different. 3.7V refers to the platform voltage (i.e., typical voltage) discharged during battery use, while 4.2V refers to the voltage at full charge. Common rechargeable 18650 lithium battery, the voltage is marked 3.6V or 3.7V, it is 4.2V when fully charged, which has little to do with the power capacity. 18650 battery mainstream capacity from 1800mAh to 2600mAh (18650 power battery capacity is mostly at 2200-2600mAh), and the mainstream capacity is even more than 3500 or 4000mAh.

It is generally considered the power is used up when the no-load voltage of lithium battery is below 3.0V (the specific value needs to look at the threshold of the battery protection board, such as 2.8V or 3.2V). The no-load voltage of most lithium batteries can't discharge below 3.2V, otherwise over-discharge will damage the battery. (Generally, lithium batteries on the market are basically used with protection board, so over-discharge will also cause the protection board to fail to detect the battery, making it impossible to charge the battery). 4.2V is the highest limit voltage for battery charging. It is generally considered that the no-load voltage of the lithium battery is full when it is charged to 4.2V. During battery charging, the battery voltage gradually increased from 3.7V to 4.2V. Lithium batteries can't charge the no-load voltage over 4.2V, otherwise batteries will be damaged. This is the specialty of the lithium batteries.

The 18650 battery life theory is cyclic charging 1000 times. Due to the large capacity per unit density, most of them are used in laptop batteries. In addition, because the stability of the 18650 is very good, it is widely used in various electronic fields: it is often used in high-end glare flashlights and portable power supplies, wireless data transmitters, electric heating clothing, shoes, portable instrumentation, portable lighting equipment, portable printers, industrial instruments, medical equipment, etc.

Frequently Asked Questions