I have a few questions about the 3.6/3.0 volt Li-ion rechargeable cells.
From what I've read (don't use them myself) they are 3.6 volt cells
that have a circuit (under the positive cap?) that senses current draw and
switches the output voltage from 3.6 to 3.0/3.2. I've also read that a voltmeter
does not draw enough current to make the cell switch. Some flashlight manufacturers
do not recommend them claiming that an incandesant high wattage bulb (low resistance cold higher resistance hot) may appear as a short circuit and turn the cell ouput OFF. These cells ARE of course recommended for the high wattage LED lights. They will run the Hi-power LED until the voltage is too low to turn the LED on (most white LEDS just don't come on below 3 volts). From what I have read the purpose of thistype of cell (before the flashlight guys) was to provide a cheaper alternative to the NON--rechargeable 3.0 volt Lithium, especially in things like cameras that took two 3 volt cells. Two of the 3.7Li-ion cells could FRY the camera. Li-ion batteries have created quite a stir with explosions. Some warn about overcharging and produce cool videos to prove it. Some have had cells fail while using one of those hot flashlights, or while vaping their mod, or carrying it in their pants. So charging isn't the only concern with these.
OK question one:
If an incandesant load can shut the cell down, is that short circuit protection? or is it some kind of fuse?
Question two:
Is the LED in the flashlight the "overdischarge" protection in that application (stops shinning on it's own), whereas a heater element doesn't know when to stop?
Question three:
If we take an old 3.6/3.0 cell that has aged and has a fraction of it's original capacity (like 100mah is the best it can do) and charge it to 3.6 it will support a load for a little while.
How can we tell that this cell, which might indicate a no-load charged voltage of 3.6 volts, and would light an LED flashlight (for a while) or produce enough current to vape for a while, has less mah capacity than another one?
Question four:
and what would happen if we paired up a weak cell with a strong cell?
Question five:
Once we have one of these cells that has been discharged just a little too far, what would happen if we tried to run a couple of amps through it in any direction? Like didn't know and tried to vape some more?
I don't really feel like getting a few of these just to find out, because I don't have a use for them.
Any really good answers would be appreciated.
Not what you have read (I can read) I mean really good answers
Rocket
From what I've read (don't use them myself) they are 3.6 volt cells
that have a circuit (under the positive cap?) that senses current draw and
switches the output voltage from 3.6 to 3.0/3.2. I've also read that a voltmeter
does not draw enough current to make the cell switch. Some flashlight manufacturers
do not recommend them claiming that an incandesant high wattage bulb (low resistance cold higher resistance hot) may appear as a short circuit and turn the cell ouput OFF. These cells ARE of course recommended for the high wattage LED lights. They will run the Hi-power LED until the voltage is too low to turn the LED on (most white LEDS just don't come on below 3 volts). From what I have read the purpose of thistype of cell (before the flashlight guys) was to provide a cheaper alternative to the NON--rechargeable 3.0 volt Lithium, especially in things like cameras that took two 3 volt cells. Two of the 3.7Li-ion cells could FRY the camera. Li-ion batteries have created quite a stir with explosions. Some warn about overcharging and produce cool videos to prove it. Some have had cells fail while using one of those hot flashlights, or while vaping their mod, or carrying it in their pants. So charging isn't the only concern with these.
OK question one:
If an incandesant load can shut the cell down, is that short circuit protection? or is it some kind of fuse?
Question two:
Is the LED in the flashlight the "overdischarge" protection in that application (stops shinning on it's own), whereas a heater element doesn't know when to stop?
Question three:
If we take an old 3.6/3.0 cell that has aged and has a fraction of it's original capacity (like 100mah is the best it can do) and charge it to 3.6 it will support a load for a little while.
How can we tell that this cell, which might indicate a no-load charged voltage of 3.6 volts, and would light an LED flashlight (for a while) or produce enough current to vape for a while, has less mah capacity than another one?
Question four:
and what would happen if we paired up a weak cell with a strong cell?
Question five:
Once we have one of these cells that has been discharged just a little too far, what would happen if we tried to run a couple of amps through it in any direction? Like didn't know and tried to vape some more?
I don't really feel like getting a few of these just to find out, because I don't have a use for them.
Any really good answers would be appreciated.
Not what you have read (I can read) I mean really good answers
Rocket
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