Quote:
Originally Posted by Alreddawg19
Thanks!
My understanding is that this is still more capacity than AGM or Lead Acid in terms of allowing for more complete discharge (per the spec as you mentioned), is that not correct?
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Hi
The Lithium guys label their batteries differently than the lead acid guys. On the typical drop in lithium, the number on the sticker is the number you can use. If it says 100 AH, you can use 100 AH.
As a separate issue, the basic lithium cell is much more tolerant of (nearly) full discharge than a typical lead acid cell. It also charges faster and has less variation in capacity vs discharge rate. That last one is a bit of a gotcha, lead acid batteries capacity at *very* low discharge rates is noticeably higher than what's on the typical sticker.
All batteries have a manufacturing tolerance on the cells. They try to match things up, but it never really works. To get useful voltage levels, we have to combine cells. That means that some will take charge better than others. The weak cell in the group generally is the one that dictates what you get overall. Keeping things as equal as you possibly can is pretty important (regardless of battery type). Without a BMS, lithiums get into pretty big trouble in this area ...
Much of that goes back to running them to near zero capacity.
No, that's not the whole story, but it's probably to much for now
Bob
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