Most likely because a LiIon battery includes a protection circuit cutting discharge current below a certain voltage. Without protection, the battery might catch fire on deep discharge.the battery has potential difference but is not providing any current? Why is that?
A battery charger implements a current limiting function. Presumed you measured correctly, the current limit seems to be set a bit below 1A. Not unusual.My USB Battery charger rating is 5V & 1A. So, shouldn't it output 5V & 1A instead of 4.6V and 0.92A?
Most likely because a LiIon battery includes a protection circuit cutting discharge current below a certain voltage. Without protection, the battery might catch fire on deep discharge.
A battery charger implements a current limiting function. Presumed you measured correctly, the current limit seems to be set a bit below 1A. Not unusual.
Thank you very much. But I am little confused with regard to the battery discharge. Could you please explain this with regard to battery chemistry on how the battery stops discharge when it is less than its nominal voltage by some amount and how the internal resistance comes into play and how the internal battery chemistry is stopped in the case of 12V Lead acid battery?I think you confuse the terminal voltage with the battery capacity. Most batteries will still show a voltage across their terminals when discharged but it drops away as soon as you try to draw current from it. A charged battery will sustain the voltage under load. if you want a better representation of how much charge there is, you have to measure the voltage while at the same time drawing current.
In layman's terms it is like d123 explains, the 'effective series resistance' increases rather than the voltage dropping. It certainly isn't the technical reality but you can think of the battery always providing full voltage but a restriction being placed between the voltage source and the terminals. As the restriction increases (the battery discharges) it doesn't change the voltage but it does change how much of it gets past the restriction to where you need it.
Brian.
But a 12V lead acid battery does not have a protection circuit. Could you please tell if where it would be for a 12V lead acid battery?Hi,
Not the battery nor the chemistry stops discharge ... it's the protection circuit that stops the discharge.
You should read some articles on batteryuniversity.com.
Klaus
What do you mean?i literally could not understand the performance
yes, you are right but it must be good enough that you can perform your welding work for a while that you are doing.Hi,
What do you mean?
A battery provides electrical energy .... but the energy is limited...
Klaus
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