I am currently in the process of making a 3S 18650 battery pack using a BMS board that I purchased from Amazon. The image of the board can be found below:
Yesterday, I successfully connected all the wires and charged the battery pack using an adjustable DC power source set at 12.6V. It worked well, and the battery pack was fully charged.
However, during further research today, I discovered that my BMS board consists of three DW01A components and some MOSFETs. These components are responsible for protecting the battery from overcharging, over-discharging, over-current conditions, and so on. What I learned is that 18650 cells should be charged in a specific way, involving Constant Current (CC) and Constant Voltage (CV) charging methods, among others. It appears that the DW01A alone does not provide such charging functions. Consequently, people usually use a TP4056 charger along with a DW01A to charge a single 18650 cell effectively.
Now, I am wondering whether it is safe to charge my battery pack using the adjustable DC power source at 12.6V or a fixed 12.6V charger. Alternatively, would it be necessary to use a charger specifically designed for Li-ion batteries, like the B6 charger?
I am a little bit confused. Based on my understanding, the TP4056 is a charger IC, while the DW01A is a protecting IC, correct? If that's the case, do I need to use both of them together for my battery pack? Any clarification on this matter would be greatly appreciated. Thank you in advance!