And increased fire/explosion safety. Though they aren’t Li-Titanate-level of cycles, I’m told that LiFePO4 offers more cycles than standard cells. Most of the people here know far more about batteries than I, but I think that LiFePO4 also reduces the cobalt demand as well, though obviously with reduced energy density. They are no panacea.
Actual chemistries today are more complex than I understand, though.
Also, LiFePO4 can be overcharged to a surprising degree without damage, which is quite different than our standard chemistries. From what I’ve seen, LiFePO4 cells could be safely charged to 4.2V. There is no capacity advantage when doing so, however, as the cell is effectively saturated by 3.6V with the bulk of the charge achieved even by 3.4V.
This is interesting when replacing flooded lead-acid batteries, as a 4S pack is fully charged by 14.4V and should handle up to 16.8V without damage. Regulation is still needed, however, as alternators can output up to 18V when extremely cold. This wouldn’t damage the pack within the few seconds that this usually occurs, but regulator failure could harm the pack. At least it shouldn’t explode or burn.
Which blue ones? The blue/cyan 5000mah are older, but good cells. The blue 5100mah seem to be a random variety of 26650 they get from different places. Their capacity measurements from battery chargers are all over the place. Sometimes higher, sometimes lower.
I’m guessing by the overly high reading it’s the 5100mah.
First of all, that measurement isn't a test. It is a standard charge measurement, which The_Fat_Controller initiated with the cell discharged to some point. :???:
On the other hand, analyzing chargers are far from being laboratory equipment. They measure differently in all their slots. I myself have taken the time to properly average my Lii-500 measurements and obtain compensatory channel indexes. On top of this I believe it measures a little bit below Henrik's setup.
I don’t think you’re right this time. The accumulators are not the same! The measured capacity is really 5000mAh. I also opened a Liitokala dispute over the Samsung 30Q. I won the dispute. I was refunded 50% of the amount paid. These batteries (versions 4000 and 5000) will not be the same. I have the original version 4000 and a new version 5000 on the way. After delivery I measure and compare them.
The above comment was really unnecessary, I am as right as I can be from this side of the story (and it can also be good to turn left LoL!). The_Fat_Controller didn't posted actual photos of his cells until half an hour ago, he just made a comment. He also didn't say if he measured capacity with a NOR test, and he should because if the cells score low that is valid evidence to win a dispute.
I’ll measure my cells. The original Lii 40 and the new Lii 50. On the Opus BT 3100, this is only an indicative measurement, but will show if there is a significant capacity difference.
That’s the same link i ordered from…. maybe my first charge result was invalid i am running Nor Test right now 115mah in… when it finishes i will post result…
Edit:
Damnn, 4 hours in still above 4v
Edit: uhhh
14 hours in 3.5v