Battery buggy? // Can i charge this battery?

Alrighty then.

What laser are you trying to power with it? How precisely does it behave - is there very little light? No light at all? Flash followed by no light?

its a green laser.. if i turned it on and saw a little into the hole i can see just some red light.

TimTom said:

its a green laser.. if i turned it on and saw a little into the hole i can see just some red light.

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Yeah "little red light" is actually "a lot of Infrared light".

Anyway, luckily for you, battery appears too weak to power up the IR pump diode to needed level for crystals to start lazing green.

That laser probably needs a 3.7 Volts lithium ion battery. If you have 16340, try it out.

nope i does not. it works fine with 3.0 volts.

Well in that case, my best guess that I have is that it got drained bit too heavily during the amp metering session.

And/or could've probably been defective from the start.

FYI, simply measuring the voltage of a battery is not always an indicator of it's charge level. It's at best "rule of thumb kinda sorta", not a precise reference.

ah k

btw. the text under the "--------------------" is another thread. 2threads in one ftw

CR2032 is generally not suitable for driving lasers. For maybe a momentary 20mA (that's 0.02A) drain, maybe.
CR123A *should* work alright, but it depends on how efficient the driver is. The IR diode needs something like 2.5 volts. A driver requires a bit of voltage for itself, so if the driver's voltage plus the diode's voltage is more than the battery's voltage, the laser may dim or cease lasing.
What 3V primary (non-rechargable) are you using?

Amperage on a multimeter is generally not a good thing to test batteries with. The idea of an ammeter is to measure the amps flowing through a circuit while modifying that circuit as little as possible. Therefore, the ammeter is basically a very low resistance wire, and testing a battery with an ammeter simply shorts the battery.

On a protected lithium ion cell, this is usually enough to trip the protection circuit. Recharging the battery on many chargers should reset the protection circuit.

I would suggest buying and waiting for the appropriate battery.

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Chargers have that disclaimer because with the larger cells like 18650, 22650, etc., you can charge them with a higher charging current that would otherwise damage or destroy smaller cells.

I wouldn't recommend charging that 14500 in that 18650 charger. If you have more Li-Ion to charge than just that one 14500, you might consider investing in a nicer charger that can charge at high and low currents and fit small and large cells.

lol.. i never said that i tested my battery with amperage i just wasnt sure if the value is important or so.. ._.

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okay. the charger accepts 3v and 3,7v (4,2v) rechargeable batterys ;o but okay, thank you

Wow --- This IDIOT (me) is outta' here.
HMike

We have a Troll here

TimTom said:

it says 2,8v@5,3amp.

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TimTom said:

lel wat.. i dont know. just set my multimeter to amppere and take it to my battery ;o

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TimTom said:

lol.. i never said that i tested my battery with amperage

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Yes you did.

And back to the start,

My opinion is that THAT what's killed your battery, or drained it enough to not be able to power a laser up.

Your original question was "what the f*** is wrong?"

Well, that's wrong.

And regarding the second question, you can change any lithium ion battery in any lithium ion designated charger, no worries.

Except when you take some very large batteries to some very cheap low-current chargers, then it'll take hours to charge up, but that's about the only problem.

Just never charge batteries in chargers that are not designated for them. Keep those NiMH chargers away from Lithium ions and polymers.

Hemlock_Mike said:

Wow --- This IDIOT (me) is outta' here.
HMike

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I was thinking the same thing! Not sure how Eudaimonium does it sometimes.

Eudaimonium avoids rush-hour traffic. Rush hour could make a cynic out of Jesus Himself!

thank you Eudaimonium, but at first: the battery isnt dead.. it works fine with flashlights.

Hemlock_Mike said:

Wow --- This IDIOT (me) is outta' here.
HMike

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No no, you are CERTAINLY not the idiot here.

BShanahan14rulz said:

Eudaimonium avoids rush-hour traffic. Rush hour could make a cynic out of Jesus Himself!

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Guilty as charged

TimTom said:

thank you Eudaimonium, but at first: the battery isnt dead.. it works fine with flashlights.

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Hmm now THAT's weird

Well, here's my new best guess:

Flashlights will light up, no matter how much juice there is, maybe they even need far lower current to operate and battery just might supply that much.

Laser needs the source above certain voltage because of diode voltage requirement + driver overhead.

So once the voltage falls below that, diode isn't powerful enough to excite the crystals, while LED flaslights might still work with such a source.

You do say that the laser does work with other batteries? What kind are those, what voltage, and when were they charged?