Pretty cool cells, it would be so nice if LiFePo cells came in a bit higher capacity then they would be great for modern low voltage leds and lineair drivers. Thanks for the test.
Looks like a very interesting cell. I also would be happy to see something very similar in 18650 format. They would be very good to drive red, far red and infrared LEDs with linear driver.
They could be useful for some very low Vf Nichias as well.
The flat voltage curve means it has sort of built-in regulation, but it doesn’t seem as sweet when you see it has less than half the energy of the shockli 5500mAh 26650.
What is sweet to me is that LiFePo cells have no safety issues, which makes them suitable for purposes that li-ions are not suitable for.
I can see a USB-rechargable flashlight that has the light output of a 4xAA flashlight but is more compact. Someone care to talk Sofirn into a D4S with 4 LuxeonV’s, USB-charging and this cell, putting out 3000 lumen over the entire discharge of the battery?
Or mod it! Just put XP-L2’s in a D4S and this cell, and watch how high the sustainable output is!!! (assuming that the MCU runs at the lower voltage, and ai, there will be problems with LVP kicking in way too soon)
Obviously there is no voltage regulation circuit in the cell, but it’s sort of regulated in that if you connected an LED direct drive the current would be essentially constant over most of the discharge of the cell.
Hi HKJ, I have recently come across a heap of these cells in a 8S 14P configuration with a Sony (assume balance) pcb. Scored 12 in total with 8 reading 26.XX volts & 4 packs with nil voltage on any cells,I have experience with Li ion 18650’s but wonder if its worth trying to recover these lifepo4 0 volt cells, any advise would be appreciated, thanks.