I will be using a LiPo battery for a project, and I want to make certain that I fully understand the safety features of the Protection Circuit Module included with the battery, so that I have a safe design.
When looking at the datasheet for the battery it includes details of the PCM, and lists the limits for when the PCM protects the battery. One of the features is the short-circuit protection, which I interpret as the protection against having a too large current rushing into the battery.
The battery I am using is very small, 25 mAh, but the PCM is listed that the current limit for when the short-circuit protection starts working is 0.7A, and that the short-circuit detection time is 7.2-11 ms.
Here's my question:
- How can this be safe?
- What if I have a charger that malfunctions and does not regulate the charging current correctly, but has a current limitation of 0.5A. Could I not then have a constant 0.5A going into my battery for which the short-circuit protection does not protect for, and that my small battery would most likely not survive?
The details of the battery PCM is included below.