Mr. Rich, I saw big thread in rcControls forum bout batts and how to 'reset' them. so thought I would try with your defective one (in assitant @ 79 cycles says bad cell in pop up).
did the reset (power up with the equalizer plug off, then plug in) course no difference.
So I thought, what the heck, lets try another scheme.... Since the balance circuit is 37ma less than the charge rate, and the charge rate is 4000+ma, it is simply not adequate if cells get out of synch. so I decided to charge your batt at 200ma: so the 37ma balance is WAY more significant. I took your bad batt from 1500mah to its capacity (2700mah) at 200ma charge rate. all 3 cell sets charged and balanced best they could. at end of many hours, 2 sets were within 2mv each, 3rd was within 10mv. STILL HAD BAD CELL POP UP!@#$#@!
So either this pop up is result of a one shot bit set in EPROM or 10mv is too far apart....
I will next artificially up the 10mv low cell to same as the other 2 and see if the pop up goes away; I expect not. I really think their BMS chip burns a bit to post the pop up and it never goes away.
BTW, your batt again confirmed that CHARGE NOW is simply [100*capacityNow/capacityFull], and %life is simply [100*(300-cycles)/300] - for those folks who were wondering how those 2 % numbers were calculated. I have verified these over many batteries.
did the reset (power up with the equalizer plug off, then plug in) course no difference.
So I thought, what the heck, lets try another scheme.... Since the balance circuit is 37ma less than the charge rate, and the charge rate is 4000+ma, it is simply not adequate if cells get out of synch. so I decided to charge your batt at 200ma: so the 37ma balance is WAY more significant. I took your bad batt from 1500mah to its capacity (2700mah) at 200ma charge rate. all 3 cell sets charged and balanced best they could. at end of many hours, 2 sets were within 2mv each, 3rd was within 10mv. STILL HAD BAD CELL POP UP!@#$#@!
So either this pop up is result of a one shot bit set in EPROM or 10mv is too far apart....
I will next artificially up the 10mv low cell to same as the other 2 and see if the pop up goes away; I expect not. I really think their BMS chip burns a bit to post the pop up and it never goes away.
BTW, your batt again confirmed that CHARGE NOW is simply [100*capacityNow/capacityFull], and %life is simply [100*(300-cycles)/300] - for those folks who were wondering how those 2 % numbers were calculated. I have verified these over many batteries.