The Mighty Volt
1 MW
Hi folks.
I just test a 3.3v, 1s 16p LiFePo4 string of cells, at around 1c. The results were good, around 14.8 Ah recorded by my CBA III
I think I might have a runt in there though cannot be sure.
It seems to be that the string charges in an odd fashion, sometimes sitting at Xamps on my CC-CV power supply for an extended period.
Additionally, it seems to drop in voltage very quickly despite being fully charged.
I charged it up to 3.6v last night and around 12 hours later, it was down to 3.39v.
I have had much smaller strings keep their 3.5v and 3.4v ratings for weeks.
I am Constant Current charging it now on my desktop power supply, at around 6 amps. I will do that for a few hours then CV it until it is drawing no more current and is fully charged at 3.6v.
Then I am going to watch it over a week and see if it drops below 3.3v in that period. If it does I know I have a problem.
Question is.........can I still use the battery, seeing as it gives out good returns at 1c??? For a light or something??
Thanks.
I just test a 3.3v, 1s 16p LiFePo4 string of cells, at around 1c. The results were good, around 14.8 Ah recorded by my CBA III
I think I might have a runt in there though cannot be sure.
It seems to be that the string charges in an odd fashion, sometimes sitting at Xamps on my CC-CV power supply for an extended period.
Additionally, it seems to drop in voltage very quickly despite being fully charged.
I charged it up to 3.6v last night and around 12 hours later, it was down to 3.39v.
I have had much smaller strings keep their 3.5v and 3.4v ratings for weeks.
I am Constant Current charging it now on my desktop power supply, at around 6 amps. I will do that for a few hours then CV it until it is drawing no more current and is fully charged at 3.6v.
Then I am going to watch it over a week and see if it drops below 3.3v in that period. If it does I know I have a problem.
Question is.........can I still use the battery, seeing as it gives out good returns at 1c??? For a light or something??
Thanks.