biker1
Enlightened
With the many Li-ion rechargeable batteries available today, from several manufacturers, I am confused re: how their protection circuits work, as there appears to be different types of pcb's being used.
From what I have read, the pcb in the battery protects it, US and our flashlights from an overcharge when the voltage reaches 4.25V +/-, and protects from an over-discharge when the voltage drops to 2.5v +/-, or from a short circuit.
- I have read that a battery with an activated pcb can then be charged in a battery charger, which would reset the pcb.
How does one know if it is the Charger Resetting the pcb, or if the pcb reset itself, and the Charger is charging a battery whose pcb has already been automatically reset.
- I have read that the charger cannot reverse the activated protection circuit, and will not charge the battery until the protection circuit is reset manually.
- I have read that some cells have a pcb that activates, But then the pcb Resets once the load is taken away.
I have questions and comments regarding the above:
The question arises that when a battery reads 0.00V, how can you tell whether the pcb activated, or if the battery depleted itself? Is there a way to test the battery to see how the pcb works, or are their spec sheets available re: the pcb's of the various manufacturers?
I would think it would be more convenient for a pcb to automatically reset once the load was removed, so that it can be easily charged again. But on the other side of the coin, how do we know the pcb activated in the first place?
Even though it would require another step to manually reset an activated pcb, I would think that a pcb that stays activated until manually reset would be best because we would know the protected circuit is working.
I would like to know the Pros & Cons of the various types of pcb's being used, including, but not limited to the manual reset & auto reset features, and which manufacturers use which types of protected circuits.
Thanks
From what I have read, the pcb in the battery protects it, US and our flashlights from an overcharge when the voltage reaches 4.25V +/-, and protects from an over-discharge when the voltage drops to 2.5v +/-, or from a short circuit.
- I have read that a battery with an activated pcb can then be charged in a battery charger, which would reset the pcb.
How does one know if it is the Charger Resetting the pcb, or if the pcb reset itself, and the Charger is charging a battery whose pcb has already been automatically reset.
- I have read that the charger cannot reverse the activated protection circuit, and will not charge the battery until the protection circuit is reset manually.
- I have read that some cells have a pcb that activates, But then the pcb Resets once the load is taken away.
I have questions and comments regarding the above:
The question arises that when a battery reads 0.00V, how can you tell whether the pcb activated, or if the battery depleted itself? Is there a way to test the battery to see how the pcb works, or are their spec sheets available re: the pcb's of the various manufacturers?
I would think it would be more convenient for a pcb to automatically reset once the load was removed, so that it can be easily charged again. But on the other side of the coin, how do we know the pcb activated in the first place?
Even though it would require another step to manually reset an activated pcb, I would think that a pcb that stays activated until manually reset would be best because we would know the protected circuit is working.
I would like to know the Pros & Cons of the various types of pcb's being used, including, but not limited to the manual reset & auto reset features, and which manufacturers use which types of protected circuits.
Thanks
