The Li-Ion protection board is a simple module with basic input and output pins. The table below shows all the pin types and their functions. The module DW01 is a battery protection IC designed to protect lithium-ion/polymer batteries from the following Overcharge, Over-discharge, Overcurrent, and Short circuit.
Therefore, when using rechargeable lithium batteries, there will be a protective circuit board to protect the safety of the batteries. Lithium-ion battery protection circuit boards have different circuits and parameters according to different ICs, voltages, etc.
With the function of overcharge protection, over discharge protection, short circuit protection, over-current protection. Suitable for lithium battery pack of 11.1V, 12V, 12.6V. Quiescent current < 30uA, so power consumption is small. 1 x 3S 11.1V 18650 Lithium battery protection board- Good Quality.
The battery protection circuit board, commonly known as the PCB, is the battery management system usually for small batteries. They typically are used for digital batteries. To understand PCBs well, you need to know about battery management systems or BMS.
Lithium-ion battery protection circuit boards have different circuits and parameters according to different ICs, voltages, etc. The commonly used protection ICs are 8261, DW01+, CS213, GEM5018, etc. Among them, Seiko's 8261 series have better accuracy and of course the price is more expensive. The latter are all produced in Taiwan.
The size of the Battery Protection Board is 5*3*1.7cm or 2.0*1.2*0.7in. This is an under-voltage switch module used to turn off the power of the load in the event of the voltage dropping below a set value. When the battery voltage increases to a set value, the module will automatically turn on the load again.