Battery Charge Time

blacksoap · Apr 11, 2015

I recently got my first mod. (penny clone) But anyway it came with an 18650 battery and I've had it on the charger for quite sometime. Im not sure if its because its new but the light on the charger is still red and its been about 8+ hours. Heres the specs on the battery and charger:

Battery: INR18650-25R
Samsung SDI
2 2EC1

Charger: Input: AC110-220V
47-63HZ
Output: 3.7V/450mA
End-of charge voltage
4.2+-1%

If yall have any tips or suggestions let me know!

Thanks,
Ryan

SMOKIE · Apr 11, 2015

blacksoap said:
I recently got my first mod. (penny clone) But anyway it came with an 18650 battery and I've had it on the charger for quite sometime. Im not sure if its because its new but the light on the charger is still red and its been about 8+ hours. Heres the specs on the battery and charger:

Battery: INR18650-25R
Samsung SDI
2 2EC1

Charger: Input: AC110-220V
47-63HZ
Output: 3.7V/450mA
End-of charge voltage
4.2+-1%

If yall have any tips or suggestions let me know!

Thanks,
Ryan

Get a multimeter to see if the bats are charged which is a must for any vaper to have using bats. $6-
http://www.harborfreight.com/7-function-digital-multimeter-90899.html

alamaan · Apr 11, 2015

Sometimes the low end chargers big out and won't read when the battery is charged. I'd pull it off and give a short test fire. If it's hitting strong then it's fine, if not then put it back on.

I sell a ton of these chargers at my shop and they always do things like this. Nothing to be too concerned with. Just don't leave your battery on the charger too long, it could set it on fire! (Worst-case scenario)

Sent from my iPhone using Tapatalk

Giraut · Apr 11, 2015

One thing with batteries is, when the charger keeps charging them after they're full, they start heating up pretty hard. High-end chargers check the temperature of the battery and stop charging if it gets high. Most low-end chargers don't do that.

Also, the traditional way chargers know when a battery is full is by detecting a slight voltage drop that happens right at the end of the charge. If you throw a fully charged battery on a charger - with the idea to top it off, if the charger is a bit dumb, it's gonna keep charging because it'll never detect the voltage drop. To be safe, you should only charge a battery after it's been significantly discharged. EDIT: I'm wrong on that one. See Jackson's post below.

Finally, really cheap battery chargers that don't always detect the end of charge properly - or don't even bother to detect it at all - stay safe by charging very slowly to limit battery overheating and/or damage. It's called trickle charging. You might have one of them chargers.

UncleRJ · Apr 11, 2015

What charger are you using?

A under 0.50 amp charge current will take about 6 hours plus.

Jackson · Apr 11, 2015

Giraut said:
One thing with batteries is, when the charger keeps charging them after they're full, they start heating up pretty hard. High-end chargers check the temperature of the battery and stop charging if it gets high. Most low-end chargers don't do that.

Also, the traditional way chargers know when a battery is full is by detecting a slight voltage drop that happens right at the end of the charge.

That's incorrect. Li-Ion chargers shut off based on current, not voltage.

A typical CC/CV chart.

This how a battery is is charged to full saturation, current is being applied/supplied (it takes less and less as it fills) till it finally cuts off when at about ~3-5% of the start. Looking at the chart you'll also see why a 1000mA charger is not twice as fast as a 500mA one. The initial 1000mA rate is only for about a third of the complete cycle.

Even these $1 charging boards follow that protocol.

Giraut · Apr 11, 2015

Jackson said:
That's incorrect. Li-Ion chargers shut off based on current, not voltage.[...]

Ah yes, you're right. I was thinking of NiCd and NiMH batteries. Thanks, I stand corrected

Whiskey · Apr 11, 2015

Moved to battery section

Teresa P · Apr 11, 2015

Hate to say this and you can "BOO!" me out of here if you want, but with my first flat top batteries, I didn't know which end was positive - not marked and no one told me - if those are inadvertently placed upside down in a charger, they won't charge and the light stays red. Turned it the other way and it worked just fine. He may have button tops, but that was a "newbie" lesson learned.

UncleRJ · Apr 11, 2015

Join the "Bonehead Move" club

At least you did not ruin a mod putting the battery in upside down

Teresa P · Apr 11, 2015

Very true! Fortunately, when this bonehead did that very thing -

- my Cloupor read "BONEHEAD!" on the readout and I put it back in the right way......LMAO!!!

Battery Charge Time

blacksoap

SMOKIE

THE MODFATHER

alamaan

Giraut

UncleRJ

Will write reviews for Beer!

Jackson

Giraut

Whiskey

Teresa P

Senior Moderator

UncleRJ

Will write reviews for Beer!

Teresa P

Senior Moderator

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