charging batts with computer

[etrnldrk]

once again !! the "u" means standardized,,,amperage is a constant,,ohm rating is a constant also

The "U" stands for a universal connector. Amperage can be 50mah and all the way up to 10amps, and thus not a part of the standard. Ohms are not a part of the USB standard.

A typical PC/Mac/Laptop USB port is 5v @ 500mah, but the amperage will be cut down depending on how many peripherals are connected via USB. External hard drives can be as high as 5amps, in the case of multi-drive cases. Printers, scanners, high capacity 3.5 inch hard drives, etc. will, in most cases, require 12v (minimum) and much higher amperages, with power being provided via an external source, such as a wall wart.

 

[etrnldrk]

No. That is a separate power source, it is not using your computer's power source, but still...I would't do it...better to be safe...why risk it. If you can plug in that usb hub, then you have an outlet there near by. Stuff happens....if for some reason the PV charging plug decides to short out or overload it could feed back into all the circuits, and if that usb hub has a usb cable plugged into your computer.... : /

That USB hub will not be using the computer's USB power. The opposite is true with USB power cables (chargers), the only pins that will be wired up will be the power pins, 5v + and ground, data pins will either be terminated or not included.

*Edit* The USB hub will have power wired up, it is how the computer will detect that the device is plugged in. It will not, however, affect the computer by plugging in your passthrus to that hub since power is being provided externally.

 

[BigStick]

Aw man! I thought it was convenient as hell to use my usb port for all my stuff. Better safe than sorry I guess. Crap.

 

[sethkal]

better safe then sorry... plugged into my ipad charger... works fine

 

[denali_41]

Universal Serial Bus - Wikipedia, the free encyclopedia

Wikipedia ?? are you serious ?? any idiot can post there !!

The "U" stands for a universal connector. Amperage can be 50mah and all the way up to 10amps, and thus not a part of the standard. Ohms are not a part of the USB standard.

A typical PC/Mac/Laptop USB port is 5v @ 500mah, but the amperage will be cut down depending on how many peripherals are connected via USB. External hard drives can be as high as 5amps, in the case of multi-drive cases. Printers, scanners, high capacity 3.5 inch hard drives, etc. will, in most cases, require 12v (minimum) and much higher amperages, with power being provided via an external source, such as a wall wart.

sounds like you just described a usb hub,,not a port

 

[Murdock Ruml]

The same holds true here. Saying that all USBs are the same is like saying you can charge a 510 in an ego charger.

 

[denali_41]

The same holds true here. Saying that all USBs are the same is like saying you can charge a 510 in an ego charger.

you have no idea how right YOU are !!

 

[denali_41]

Aw man! I thought it was convenient as hell to use my usb port for all my stuff. Better safe than sorry I guess. Crap.

go ahead and use a wall wart !! if something happens ?? you could have short in the house wiring and burn the house down
better safe then sorry bah ha ha ha ha ,,,,

what if ?? you just never know ?? it could happen ??

 

[subliminalurge]

you could have short in the house wiring and burn the house down

Your house wiring has circuit breakers to protect against that possibility.

 

[denali_41]

Your house wiring has circuit breakers to protect against that possibility.

so there had NEVER EVER been a house fire caused by faulty wiring ???? HA !!!

 

[subliminalurge]

so there had NEVER EVER been a house fire caused by faulty wiring ???? HA !!!

Of course there has.

What does that have to do with USB ports, anyway?

 

[denali_41]

Of course there has.

What does that have to do with USB ports, anyway?

had you read earlier posts about usb charging ??? you would know the answer

 

[classwife]

No more of this...

http://www.e-cigarette-forum.com/forum/announcements-rules/51178-forum-rules.html

7. Courtesy
a. Members must be polite at all times. When addressing another Forum user, you will be polite. Courteous discussion is welcome here but heated and abusive argument is not. If attacked you are not allowed to respond in kind. Instead use the Private Message system and try to resolve matters privately and amicably. If problems persist ask for the help of a Moderator.


8. Personal attacks
You can disagree with the subject matter of a post, but never personally attack the poster - “Attack the post, not the poster”. Treat people as you would like to be treated yourself: with courtesy.

Thank you.

 

[etrnldrk]

No more of this...

http://www.e-cigarette-forum.com/forum/announcements-rules/51178-forum-rules.html

7. Courtesy
a. Members must be polite at all times. When addressing another Forum user, you will be polite. Courteous discussion is welcome here but heated and abusive argument is not. If attacked you are not allowed to respond in kind. Instead use the Private Message system and try to resolve matters privately and amicably. If problems persist ask for the help of a Moderator.


8. Personal attacks
You can disagree with the subject matter of a post, but never personally attack the poster - “Attack the post, not the poster”. Treat people as you would like to be treated yourself: with courtesy.

Thank you.

Warning received.

 

[dragonriot]

Unless your computer has a dedicated USB port for electronics charging (my Portege has one that is designed for charging stuff) you shouldn't use your computer to charge anything except your cell phone... Also, yes, MOST computer USB ports output 5v at 500mAh, so even your phone might not actually pull a good charge from your ports if you're actively using it. I had my mom's phone plugged into my computer earlier to test the phone for something, and the highest charge it was able to grab from the charging port was 136mAh because the thing was pulling so much just being powered on.

Almost any USB Wall Wart (wall plug that you plug a USB cord into) provides enough power to charge two devices at the same time at 500-1000mAh, and is much less likely to short out anything or blow any fuses, capacitors, etc...

 

[classwife]

so...ok...asked...answered and beaten to death...closing this now.