How many cycles does a typical 18650 battery have? (80% of 3000 is 2400) so when the cell reaches a capacity of 2400 mAh we say its cycle life is over. So if we take a 3000mAh cell, when do we say its life has ended? When this percentage reaches 80%, we say the cycle life has ended (even though you may get a few thousand more cycles out of your battery). 2900 mAh is 96% of the original capacity. For example, if your cell started at 3000mAh, but now only has 2900mAh. To charge an 18650, you should use a special charger for lithium-ion cells.Ĭycle life is determined by the difference in capacity of your cell taken from its first-use rating to its present rating.You can also use battery testing equipment to discharge a battery. The electricity is drawn from your device, and the battery discharges current. To be safe, never discharge lower than 3.0V unless you know your cell's specification.ĭischarging occurs anytime you use the battery for power.18650 lithium-ion batteries are charged up to 4.2V and down to between 2V and 3V depending on the cell's specification for cut-off voltage.Some particular sections you might want to look at to get started include the following: Installed battery, Recent usage, and Battery usage.When an 18650 battery is charged and discharged, this is counted as one cycle. You can get a lot of detailed info about your battery usage and capacity. Open File Explorer, go to the folder that the report was saved to, and then double-click the battery report (HTML file) to open it in your web browser. The file location will be shown in the Command Prompt window. The battery report will be an HTML file that’s stored in a folder on your PC. Select Search on the taskbar, type Command prompt, press and hold (or right-click) Command prompt, and then select Run as administrator > Yes.Īt the command prompt, type powercfg /batteryreport, then press Enter.
#Charging lithium ion batteries windows#
If you’re interested in getting more technical info about your battery usage and estimated capacity, you can use the Powerfg command-line option that’s built into Windows 11 to generate a battery report. Get a detailed battery report in Windows 11 You should handle the device with caution to prevent putting pressure on or puncturing the battery cell. If your device’s battery has expanded visibly beyond the mechanical enclosure, we recommend that you stop using the device. When a battery expands from deterioration, it’s most often caused by the formation of non-flammable carbon dioxide (CO2) gas. When a battery has deteriorated a lot, battery life might be very short or the lithium-ion cells may expand.
If you need to store your device for a long period of time, it’s best to make sure the battery level is below 50% but not completely drained before storing your device. Batteries that are more fully charged and then stored may lose capacity faster. Store your device with the battery charged to below 50% but not completely drained. Extremely high temperatures can cause lithium-ion batteries to deteriorate at an accelerated rate, which can permanently lower the battery capacity. Try not to use your device or charge it at high temperatures. If your device supports Smart charging, turn it on to make sure that your device stays charged to the recommended battery level-even if you keep your device plugged in.Īs you use your battery, you should avoid some conditions because they can lead to the battery deteriorating and aging at a faster rate: To help extend battery life and performance, try to keep the battery level between 20% and 80% several times a week instead of using your device for only a short amount of time, and then plugging it in to recharge the battery. Like all batteries, lithium-ion cells age and deteriorate over time and with use. Therefore, battery life may be reduced and you’ll need to charge your battery more frequently. When battery capacity is lower, the battery can’t be charged as much as it used to compared to when it was newer. This will help reduce deterioration in the battery cells. When using your device, make sure the battery regularly drains below 50%. This means you’ll need to charge your battery more often and the overall battery capacity may be lower. The capacity of lithium-ion cells is reduced after a certain number of times the battery is charged and then discharged. These batteries charge quickly, discharge at a steady rate, and they have high-energy density that allows for small cell sizes in batteries.īy understanding a little about lithium-ion batteries, you can help maximize your battery life and the overall longevity of the battery in your device: Lithium-ion batteries are the most common type of battery used in today’s mobile devices-including laptops and tablets.
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