10w USB plug kill battery?

[Bobdinski]

The only USB plug in my house besides the computer is the 10w plug that came with my Ipad.

Anybody know if the 10w (2 amp) will kill the battery on a 510? Basically, you get a 10w plug with the ipad so it will charge in 4 hours. I believe the device is 3.7 volts and something like 6k mili amp hours.

 

[Rocketman]

The ipad 10w wall charger is really a 5 volt 2 amp power supply. The ipad has the smarts inside of it to use the 5 volts as hard as it needs to to charge it's batteries.
Your 510 USB charger has the smarts in it to take 5 volts from the USB and hit it as hard as it needs to to charge your 510 ecig.
In each case the proper smarts are in place.

 

[Joseph112]

Yes you can use it, the 510 USB charger will take only the wats he need not more, doesn't matter if you have a 10000w usb power as long it provide 5 volts.

 

[Cee_Jay]

Charging any lithium battery at 5v is a no-no. Lithium batteries can only be safely charged at 4.2v, the current is (should be) regulated by the charger as needed. The charger SUPPLY can be 5v (or more) as long as the charger can accept that as it's INPUT. With few exceptions, the charging CURRENT should never exceed 1C rate, I.E. a 650ma cell can be charged at 650ma MAX without encountering life-ending (and dangerous) problems.

 

[Bobdinski]

So far it seems to be working fine. I just got a pcc case, so i think i'll stick to that. Hopefully it has the "smarts". I noticed the resistors in the pcc case make some audible clicking noises. Some shotty engineering there. It may be the leads to the LED, but it sounds like a capacitor / resistor pop.

I have 3 batteries and the girlfriend wanted the third battery, hence the need for the ipad charger. Now she wants me to order her a pink one. Go figure! Can't find a source for a pink cartomizer yet. Reading here, i think i want to go the cartomizer route.

 

[FAUXPUFF]

Charging any lithium battery at 5v is a no-no. Lithium batteries can only be safely charged at 4.2v, the current is (should be) regulated by the charger as needed. The charger SUPPLY can be 5v (or more) as long as the charger can accept that as it's INPUT. With few exceptions, the charging CURRENT should never exceed 1C rate, I.E. a 650ma cell can be charged at 650ma MAX without encountering life-ending (and dangerous) problems.

He is not plugging the battery directy into the USB, he is using the USB for his charger, which will regulate to the proper voltage...

 

[tdh]

It _should_ be fine. Unless your charger sucks. If the charger is designed and built correctly, it will work. Also, all of the 510 batteries I have opened had a protection IC that should minimize the damage, but I have never stressed one so I wouldn't leave it plugged in for more than a couple of hours. Also, just because it seems to work once or twice doesn't mean that it is really working. I know from experience (in controlled conditions) that there are 510 batteries that will charge from 5v, and the protection circuit will open when it is fully charged. Doing so, however, is dangerous. It is more dangerous at 10w than 2.5.

If it does end up hurting your batteries, you should definitely get a different charger.

 

[Rocketman]

Folks, the thingy that plugs into the wall and has a USB port is a USB power supply. It would be really strange if the USB power supply put out anything but 5 volts. Some with a really low capability might sag to a little less than 5 volts and those with a high capability put out a little more than 5 volts if lightly loaded. If it has a USB port, consider it a Power Supply.

Chargers for Lithium Ion batteries might plug into a USB power supply. If a device has a cord that plugs into a USB power supply then your device has a charger inside of it. The charging smarts are in the phone, MP3 player, or in this case the ipad, Not the USB power supply. The e-cig USB CHARGER (the one with the USB plug on the end), is a CHARGER that plugs into a USB POWER SUPPLY.

Now a test
Find a USB power supply in your house (one point),
Find a charger (maybe even INSIDE your phone) that has the smarts to use a USB power supply (one point),
Plug the "charger" into the USB power supply to charge a Li-ion device (one point),
Unplug the charger when charging is complete (one point),
Plug a $10 USB device into a $1500 Laptop to charge it (lose a point)
How'd everyone score?