i've asked something similar before, but thought i'd start fresh as it is a little different.
my 48v lifepo - charge settings are 57.6v (3.6v) bulk/absorb and 55.2v (3.45v) at float and recharge is 54v (3.375v).
i'm still a little confused on what is happening...tell me if i have this correct: the battery voltage drops below 54v...c/c goes to bulk, dumps the amps in. when a single cell goes above 3.6v, the bms shuts off the charge to the battery and attempts to balance by draining the high cells. when all cells are below 3.6v, the charging should resume IF it's still in absorb and looking for 3.6v. otherwise, it goes to float, so all cells will settle out to 3.45v.
i ran a discharge/recharge and after sitting for awhile, the cell voltages are from 3.45v-3.30v. the c/c is in float. do all of the cells have to go below 3.375v before it begins to charge again even though the battery voltage itself is only reading 53.9v?
every time i think i am beginning to understand what is happening, something happens that i don't think should happen. i also have read that it may take several charge/discharge cycles before it begins to really calibrate itself.
my 48v lifepo - charge settings are 57.6v (3.6v) bulk/absorb and 55.2v (3.45v) at float and recharge is 54v (3.375v).
i'm still a little confused on what is happening...tell me if i have this correct: the battery voltage drops below 54v...c/c goes to bulk, dumps the amps in. when a single cell goes above 3.6v, the bms shuts off the charge to the battery and attempts to balance by draining the high cells. when all cells are below 3.6v, the charging should resume IF it's still in absorb and looking for 3.6v. otherwise, it goes to float, so all cells will settle out to 3.45v.
i ran a discharge/recharge and after sitting for awhile, the cell voltages are from 3.45v-3.30v. the c/c is in float. do all of the cells have to go below 3.375v before it begins to charge again even though the battery voltage itself is only reading 53.9v?
every time i think i am beginning to understand what is happening, something happens that i don't think should happen. i also have read that it may take several charge/discharge cycles before it begins to really calibrate itself.