ArmoredFiend
Newly Enlightened
Guys,
Jst bought an EagleTac 18650 3400mAh cell couple days ago and it's my 1st time using a 18650.
When i just receive it, i check it with a digital MM and saw the voltage is at 3.7..so i charge it with an Ultra Fire WF-139. After a couple hours, the light turn from red to green and i off it immediately. Let it cool down for a couple minutes before chcking with MM. It shows 4.15.
I have it charge again couple hours ago after using it over the weekend. And this round, the charging light turn green at 4.16.
But i remember full charge will be at 4.20...
So is WF-139 stop charging when it's about to be full, meaning it is impossible to get 4.20..
Or is it due to the protection circuit in Eagletac cutting off charges when it detect that it's about to be full?
Or i have a not so good 18650 from Eagletac?
Thanks in advance.
Jst bought an EagleTac 18650 3400mAh cell couple days ago and it's my 1st time using a 18650.
When i just receive it, i check it with a digital MM and saw the voltage is at 3.7..so i charge it with an Ultra Fire WF-139. After a couple hours, the light turn from red to green and i off it immediately. Let it cool down for a couple minutes before chcking with MM. It shows 4.15.
I have it charge again couple hours ago after using it over the weekend. And this round, the charging light turn green at 4.16.
But i remember full charge will be at 4.20...
So is WF-139 stop charging when it's about to be full, meaning it is impossible to get 4.20..
Or is it due to the protection circuit in Eagletac cutting off charges when it detect that it's about to be full?
Or i have a not so good 18650 from Eagletac?
Thanks in advance.