From the resource doc...
Constant current aka bulk
During this phase the charger controls the charge current by controlling the charge
voltage.
Current flow is a product of voltage differential.
In other words there needs to be a difference in voltage between the battery and
the charger to make current flow.
As the battery fills up its voltage increases.
The charger increases the charge voltage to maintain the prescribed current flow.
Constant voltage aka absorption
When the charger no longer has to adjust its voltage down from the configured
charge voltage to maintain the the prescribed current flow, the charger is in the
absorption phase.
During the absorption phase the charge current decreases as the battery voltage
approaches the charge voltage.
The absorption phase ends when the charge termination criteria is reached.
Got it...no sense wire. Like what I saw my bench power supply do when top-charging. CC and CV are like interconnected.
And yeah, I wouldn't' want my BMS controlling charging parameters.
So if 3.45 per cell - 13.8 for 4 - is the 100% full charge level, why is it acceptable to charge them at 3.65/14.6 without overcharging them?
Is this to get the voltage differential to keep current flowing? And then they settle back to 3.45V when charging is terminated?
When I set the powermax to 14.4 or 14.6 (can't remember) I did have one cell hit the top - BMS said it was 'over voltage' and the grayed-out 'balancing' text became visible. So the BMS stopped charging that one cell and let the others catch up? And that one time does register in the history on the bms app.
Constant current aka bulk
During this phase the charger controls the charge current by controlling the charge
voltage.
Current flow is a product of voltage differential.
In other words there needs to be a difference in voltage between the battery and
the charger to make current flow.
As the battery fills up its voltage increases.
The charger increases the charge voltage to maintain the prescribed current flow.
Constant voltage aka absorption
When the charger no longer has to adjust its voltage down from the configured
charge voltage to maintain the the prescribed current flow, the charger is in the
absorption phase.
During the absorption phase the charge current decreases as the battery voltage
approaches the charge voltage.
The absorption phase ends when the charge termination criteria is reached.
Got it...no sense wire. Like what I saw my bench power supply do when top-charging. CC and CV are like interconnected.
And yeah, I wouldn't' want my BMS controlling charging parameters.
So if 3.45 per cell - 13.8 for 4 - is the 100% full charge level, why is it acceptable to charge them at 3.65/14.6 without overcharging them?
Is this to get the voltage differential to keep current flowing? And then they settle back to 3.45V when charging is terminated?
When I set the powermax to 14.4 or 14.6 (can't remember) I did have one cell hit the top - BMS said it was 'over voltage' and the grayed-out 'balancing' text became visible. So the BMS stopped charging that one cell and let the others catch up? And that one time does register in the history on the bms app.