Ah, very cool. If you have a DB you’ve collected that’s one thing, but if there is a certain skill other than just googling the identification, please let me know. I actually started a new thread to be more specific. Thanks!
I am happy w/ my xtar charger at this time. My rule of thumb is not to drain them below 3.6v and if their resting capacity after a charge cannot hold 4v, recycle it. Seems reasonable?
Ah, so my Fandyfire HD2011 (if it ever gets here, damn back order) is said to draw 3.8 - 4.7a so I assume I’m covered. Thanks very much for the info. If I uncover any other battery types during my travels, I’ll certainly let you know.
It pulls 2a on high which was exactly what I wanted for my 30min commute.
The FandyFire HD2011 will be my EDC when it gets here and helmet light as it is floody. I’ll run that on medium during my commute as reports say it pulls 1.8a. We shall see!
Those numbers are based on new batteries. The only way is to check capacity and draw amperage on each used cell. Voltage or the ability to hold voltage has nada to do with either. But one piece of advise is NOT to mix cells from different packs. Generally cells from the same pack are matched but without knowing capacity or condition of used cells a guess at best. This is just friendly knowledge, do as you please.
I have used the red ones in my DRY which draws 4.5 amps on high and they do perfectly fine. Albeit I had tested them on a hobby charger and they all had similar capacity.
Actually, as I understand it the ability to hold voltage does have something to do with it. Old bad cells generally have a higher internal resistance and thus self discharge quicker.
I do agree with you and I think it would be a bad idea to run those cells in series because you did not keep track of which packs they came from and their voltage.
Doh! Oh well, I thought I was being smart to draw they down a bit to get them under 4.20v so they did not degrade. I guess not a huge deal because my Xtar only charges them to 4.16 anyway so it was going to happen at some point. Thanks.
Yes I do agree that cell that rapid discharge are junk. But I have tested many cells with depleted capacity of <40% maintain a voltage above 4.1v three months after charging. We can agree to disagree. My pesonal preference is to discard any salvage cell below 80% capacity that does not hold voltage.