What are the differences between the 18650 battery with protection board and without protection board?

The advantage of 18650 battery with and without shielding is the use of maintenance board battery, the charging and maintenance voltage is maintained at 4.125V, the discharge is maintained at 2.4V, and the charging current can be within the maximum range of the lithium battery. Without the maintenance board, the battery will be overcharged, over-discharged, and over-current, and the battery is easily damaged. Why add a lithium battery to maintain the board? Because the operating environment of the lithium battery has special requirements, it cannot be overloaded, cannot overput, cannot be overheated, and cannot be charged and discharged with overcurrent. If there is, there can be obvious images such as explosion and burning, and the battery can still be broken , And it can also cause serious social problems such as fires. What are the advantages of the 18650 battery with and without a maintenance board? The 18650 that we often mention today is actually a standard battery shape. Standard battery model, 18 means diameter is 18mm, 65 means length is 65mm, 0 means cylindrical battery. 18650 batteries originally referred to nickel-metal hydride batteries and lithium batteries, because nickel-metal hydride is now used less, so now it refers to lithium batteries. The nominal voltage of a single unit of 18650 lithium battery is generally 3.6v or 3.7v. The minimum discharge stop voltage is generally 2.75V. The general capacity is 1200~3100mAh, higher than 3400mAh is a virtual standard. Portable lighting equipment such as explosion-proof flashlights and flashlights commonly used in lighting equipment are mostly powered by 18650 lithium batteries. The 18650 battery has the advantages of large capacity, long life, high voltage, and good stability. It is very suitable for portable lighting equipment such as strong light flashlights. What are the advantages of 18650 battery with and without maintenance board? Some readers have questions about 18650 battery with maintenance board and without maintenance board. What are the advantages of the 18650 battery with a maintenance board and a maintenance-free board? The maintenance board is suitable for everyone to use. During discharge maintenance: when the battery is about to run out, the minimum voltage required by the maintenance board will be turned off and will not be discharged, so the product will Active shutdown constitutes a maintenance effect during discharge. Overcharge maintenance: When the product is charging, when the voltage reaches the highest battery voltage (4.2v), the maintenance board will automatically close, indicating that the charging will not continue. It constitutes an overshoot maintenance effect. Short-circuit repair: When the battery is accidentally short-circuited, the repair board will actively close within a few milliseconds and will not be energized. At this time, it does not matter if the positive and negative electrodes encounter one piece, and the short-circuit repair will not cause an explosion. Overcurrent maintenance: When the battery is discharged, the maintenance board has a maximum current limit. Different products are different. When the flow exceeds this current, the maintenance board will also actively shut down the 18650 battery without a maintenance board. The battery size is smaller than the battery with a maintenance board. Some devices cannot use the battery with a maintenance board due to the original design. The cost of not taking the maintenance board is low, and the price will be relatively cheap. The lithium battery without repair board is suitable for experiencing this kind of use. Generally, it is not put and charged, and its service life is similar to that of the repair board. What are the advantages of the 18650 battery with and without the maintenance board? Note: The third test is not professional. Don't do this test, because it may cause a very powerful explosion and cause irreparable personal injury, especially when you encounter those batteries. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.