What is the difference between 18650 Li-ion battery with protection plate installed and without protection plate?
1, the height of 18650 lithium battery without board is 65mm, the height of cell with board is 69-71mm.
2, without the protection plate can be discharged to any voltage, if the protection plate is installed, then the minimum intelligent discharge to 2.7V may be forced to disconnect.
3, with the protection plate of the battery discharge current according to the maximum output set by the protection plate, without the protection plate can reach the standard specifications of the battery cell.
Note: In fact, there are still many 18650 lithium batteries without protection plate in use on the market, and the technology of 18650 batteries is now more mature. It also has its own more mature battery protection mechanism
A way to determine whether the 18650 lithium-ion battery has a protection plate
Method 1. 18650 lithium-ion battery length is 650mm, with a round protection plate at the negative terminal above 1mm;
Method 2. The short-circuit current of the 18650 Li-ion battery is tested in real time by an ammeter of 10A or 20A. If the ammeter reading is instantaneous and quickly goes to zero, this means that the 18650 Li-ion battery has a protection plate.
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