I'm just looking at the BQ2407x range of Lithium-Ion charging ICs. One part in the range has an extra pin, TD, which disables/enables "charge termination". Here is the functionality description:
Sadly this only goes into what happens if you disable it, but doesn't really say what happens if it is enabled (i.e. I'm guessing normal operation). From my understanding, "termination current" is the current fed into the battery once it reaches the CV stage. As someone semi-new, I can't understand the point of disabling this. So my question:
Why would you want to disable termination current?
The only thing I could find (here) is that you can extend battery life by not charging it to 100% every time, which is what would happen if you disabled any current at the CV stage - but that article encourages reducing termination current, not stopping it entirely. Frankly, the product I'm designing doesn't need to be perfect/have extremely long life, so really I just want to know the consequences of pulling the pin low vs pulling the pin high.