Here is a rundown of 7 different ways you can advise in the event that you need to dispose of a 18650 (or other battery-powered battery). Glance through these to decide whether your 18560 batteries is approaching an incredible finish and should be resigned:
1. The battery will lose a charge on the rack should quicker than ordinary. It loses its charge following two or three days or far more terrible overnight.
2. The battery gets hot while charging or releasing, hotter than typical.
3. You have utilized the battery habitually for more than 2 to 3 years.
4. The battery can hold under 80% of its unique limit.
5. Energize time gets unusually long.
6. In the event that there is ANY breaking or twisting in the battery.
These are the 6 signs your 18650 is dead and the time has come to get another one. In the event that you disregard these admonition signs, you hazard fire or in any event, having the battery detonate while being energized.
HOW CAN I MEASURE THE QUALITY OF AN 18650 IF I AM UNSURE OF THE AGE OF A BATTERY?
A stunt is to get a couple of comparable 18650s and imprint them "new" with a Sharpe (or name them A, B, C, and so on) At that point use them and contrast their voltage and release rates and the faulty 18650s.
Essentially, you are contrasting acceptable versus obscure thusly.
You can likewise measure temperature along these lines. Charge both the new and obscure ones to perceive how hot the upgraded one is contrasted with the one you are uncertain of.
you can also view the relevent post
https://cgscholar.com/community/profiles/lmiller3/updates/131345
https://uberant.com/article/1051846-caring-for-your-18650-battery/
https://topsitenet.com/article/704662-when-should-you-replace-your-18650-battery-/
https://dailygram.com/index.php/blog/825906/how-to-avoid-fake-18650-batteries/
http://www.cross.tv/blog/212066