I'm following this standard algorithm: http://batteryuniversity.com/learn/article/charging_lithium_ion_batteries Algorithm for charging LI-PO batteries?
but am wondering if I can get ~80% of the capacity with just the constant-current stage, why not just do that? Is there something about the constant-voltage stage that is helpful for the chemistry (knocking off dendrites and such?).
Answer
Edited
You can stop charging when voltage reaches maximum voltage.
This is explained in article you mentioned (from Battery University):
Li-ion does not need to be fully charged, as is the case with lead acid, nor is it desirable to do so. In fact, it is better not to fully charge, because high voltages stresses the battery. Choosing a lower voltage threshold, or eliminating the saturation charge altogether, prolongs battery life but this reduces the runtime. Since the consumer market promotes maximum runtime, these chargers go for maximum capacity rather than extended service life.
Saturation charge is used to store maximum possible charge in battery. If you want maximum service life instead of maximum capacity - this is how to do it. Eliminate saturation charge.
Im assuming you know that Li-Ion is very similar to Li-Po and same rules apply to both types.
No comments:
Post a Comment