skipweasel
Q: Why are these cells labeled 400mAh when they are in fact 1800mAh ?
Asked by JohnB667 on 2019-08-02 11:36:44
Q: What is the difference between Protected and Unprotected 18650 batteries?
Asked by popkamick on 2019-08-23 10:06:16
skipweasel Ifyou let a lithium (or many other sorts) battery go completely flat it can lose capacity, or be totally trashed by being driven backwards by the other cells in the stack. A protected cell has a small thin circuit board stuck on the end which controls charging and discharging to reduce the chances of damage. The drawback can be they're a bit more fragile and a tiny bit longer. Most times you can get away with the change in length, but not always.
2019-08-25 04:31:03 Helpful (3)We sincerely invite you to subscribe to the Invite Answer email!
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skipweasel They'resold as 4000mAh because high values sell. Last time I looked there's no such thing as 4000mAh 18650 cells - so it's a lie.
2019-08-25 04:32:11 Helpful (4)