Help for charger!

[BrianG]

Originally Posted by virusss

...I wanted to change the astroflight because many have said that not is a real CC/CV to me...

From what I've seen of a few chargers, not many are true seperate CC/CV units. Usually, they are adaptive constant voltage or adaptive constant current. Or maybe a CV supply with a current limit (which is the charging current).

Adaptive CV means the charger is a constant voltage source as far as the circuitry is concerned. The CPU monitors the charging current and adjusts the voltage to keep it within the set charge current value.

Adaptive CC is basically the same idea but reversed: The charger is a CC source circuitry design. The CPU monitors the output voltage and adjusts the current to keep the voltage within the 4.2v/cell mark.

Any of these designs are perfectly fine providing the CPU reacts fast enough to any changes in either current or voltage.

It's hard to tell which one is which. For one thing, the displays usually have a delay which helps even out the true C or V readings of the battery. Or the display has some type algorithm to average the actual readings to provide a more stable display. You'd need a current meter and voltmeter hooked up simultaneously between the battery and the charger to really see what is going on. And even then, if the internal CPU is fast enough, both the V or C output will fluctuate so little than it can be hard to tell without reverse-engineering the unit.

Anyway, just my observation and my $0.02...