How many cells can TP4056 charge?

The TP4056 is designed to charge a single lithium-ion cell. It operates effectively with a fixed charge voltage of 4.2V and can deliver a maximum charge current of 1A.While you can connect two lithium battery cells in parallel to effectively double the capacity, it is generally recommended not to connect more than two cells at a time to this module to ensure safe and efficient charging.In summary, the TP4056 is best suited for charging one cell at a time, but with caution, you can charge two cells in parallel for increased capacity.

For connected guidance and the next practical steps, use the Battery Selection and Buying: Technology and System Fundamentals — Part 2.