Kensington USB Power Tips for Nokia
 

Recent buy.com 770 owner. I found this tip by Kensington that allows you to charge via usb. I did not see this accessory posted, so I hope this is not old news.

http://www.circuitcity.com/ssm/Kensi...oductDetail.do

With usb power adapters available for the car and house, you can charge as needed even when not at your computer. I also have several rechargable external batteries with usb ports. I hope this helps someone.

Re: Kensington USB Power Tips for Nokia
 

I saw these the other day at circuit city and almost bought one. I didn't because I didn't know if it put out enough amps to give my N800 a good charge.
Does anyone have one of these and knows if they work?

Is there a difference between the Kensington one and the Nokia CA-100 adapter?
http://europe.nokia.com/A4317011

Re: Kensington USB Power Tips for Nokia
 

adammelancon, these are just wires/connectors - they don't put out any amps.

I'm not sure if the 770 and 800 have the same power connectors, but I use the Nokia CA-100 for my N800, purchased at Amazon to charge from my computer or other USB power sources. See the detailed power information I posted in this thread:

http://www.internettablettalk.com/fo...ead.php?t=8251

Re: Kensington USB Power Tips for Nokia
 

I know the "wires" don't put out any amps, but you do get a certain amount of amps when the wires are connected to a PC. My Nokia AC-4U charger puts out 890mA when charging. What I was asking was basically how many mA you can draw from these adapters when connected to a USB port.
890mA is a pretty high output for a charger and seems to charge my N800 pretty fast. Charging via USB must take quite a bit longer.

Re: Kensington USB Power Tips for Nokia
 

Charging ANYTHING through USB using a computer usually takes longer.
I regularly charge my Nintendo DS, Sony PSP, and Jawbone headset via USB off my MBP and the only one that charges "quick" is the Jawbone. The PSP takes the longest.

Re: Kensington USB Power Tips for Nokia
 

In your opinion, does charging via USB not give as good of a charge as using a higher output AC adapter and lowers battery output? I would hate to start charging via USB to only find out that I'm only getting 2.5 hours instead of the usual battery length.

Or is it possible that it could wear out the batter faster?

I'd just hate to use something 3rd party that would mess up my N800 or it's battery.

Re: Kensington USB Power Tips for Nokia
 

A fully-charged battery is a fully-charged battery, it doesn't matter how it actually GOT the charge.
I'm just saying it's going to take a little longer but it sounds perfect for on-the-road travel. Since my N95 charges when it's in the cradle and I use the old auto-adapter for my N800 via a two-plug splitter I almost NEVER have to pack chargers in my suitcase unless I'm flying and even then it's just one charger since the phone usually recharges FAST off a wall plug and I leave the N800 plugged in overnight while I sleep. If you put the N800 into offline mode and then into softpoweroff mode it can last a LOOONG time like that and still have an almost full battery at the end of the day.

Re: Kensington USB Power Tips for Nokia
 

True... if i'm not using it for a couple of hours, I'll usually put it in offline mode and hit softpoweroff, and it does last a long time.

Thanks for the quick reply!

Now the only thing I'm wondering is if i need to use that little inline power amp that is included in the pack....
http://images.acco.com/KENSINGTON/K2...12US-16794.jpg

Re: Kensington USB Power Tips for Nokia
 

Well, I'm headed on down to Best Buy to see if they have anything similiar...

Re: Kensington USB Power Tips for Nokia
 

If I recall correctly, USB in "high output" mode pushes out 500mA.

Re: Kensington USB Power Tips for Nokia
 

I bought one of the above kits. It looks to me like it is working. The N800 thinks it is charging, and the Kensington voltage boostser is blinking away.

Edit: The light is red sometimes, green sometimes. Kensington docs & google aren't telling me anything. Hmmmm.....

Re: Kensington USB Power Tips for Nokia
 

Any opinions yet? How is the charger working for you?

Re: Kensington USB Power Tips for Nokia
 

it seems to charge my n770 just fine, albeit much slower than the wall charger. and yes, i have to use the booster otherwise it won't charge.

Re: Kensington USB Power Tips for Nokia
 

I'm not quite sure how your 770 charged through USB. That's impossible by all my knowledge, unless you followed the guide here on how to charge via USB. There is no power going to the USB hub, you would have to solder a connection from the USB to the battery. Please see this.
http://www.internettablettalk.com/fo...Charge+USB+770

Do not buy these if you just want to charge you device. Sorry bout that.

Re: Kensington USB Power Tips for Nokia
 

Read the thread.
Now go back and read it again.

They aren't talking about charging the N770/N800 via the USB port on the tablet itself, they're talking about recharging it from a USB port on a computer/wall plug going to the regular port port on the tablet.

Re: Kensington USB Power Tips for Nokia
 

Yep... Read, reread, then really look at that big picture I posted.

Re: Kensington USB Power Tips for Nokia
 

What does the "booster" do? A USB port puts out 5VDC @ 0.5A (max). The Nokia needs 5VDC to charge. So, what's being boosted? No matter what you do, you're not going to get more than 0.5A out of a USB port.

For those of you who have taken your N800 apart, can you measure the voltage and especially the current when charging a fairly dead battery? This would be good to know. I don't have any 2mm power plugs or sockets yet, so I can't make an adapter to measure the current myself.

Thanks.

Re: Kensington USB Power Tips for Nokia
 

i didn't think i'd need the booster either, but the charging icon on my n770 didn't show without it. therefore, i figured it wasn't charging. after plugging in the booster, the charging icon appeared and i left it to charge. is it possible there was enough juice to charge but not display the animation?

i don't know the answer to your question but an answer could be tucked away in this thread: http://www.internettablettalk.com/fo...ght=usb+charge

Re: Kensington USB Power Tips for Nokia
 

do any one know what cradle chager works with nokia n800 internet tablet