The current of the lithium battery protection board is determined by the detection voltage of the protection IC and the internal resistance of the MOS tube. If the protection IC cannot be modified, the MOS tube can be modified, for example. DW01 and 8205MOS The use of one MOS tube is 2~5A. If two MOS tubes are connected in parallel, the current will double. Some of today's large capacity mobile power supplies use 3 to 4 MOS tubes connected in parallel.
Protection board protection current = overcurrent detection voltage / internal resistance of MOS tube (since two MOS tubes are connected in series, the internal resistance of MOS tube should be multiplied by 2 when calculation)
p>Choose a protection board for lithium batteries It depends on the capacity of the battery. Generally, there are no special requirements for batteries below 2000 mAh. YOUcan simply choose a general protection card. The protection current is 2-5A. The general battery is 1C. The best protection current for batteries above 2000 mAh is 3 A or more. For power batteries, many do not have a protection board, but have a PTC connected in series to automatically cut off power when the temperature is too high.
I think you are looking for a lithium battery protection IC manufacturer.
Front-line manufacturers include Japan's Seiko and Liguang, as well as Taiwan's Hongkang HYCON and Fujing.
The second level includes Fuman, BYD Micro, Zhongying, etc. locally produced.
Personally, I recommend products made in Taiwan, which are more cost-effective. If you only want low-end products, you can choose domestic products.
We are specialized in this typeof protection IC.