Thread: Kensington USB Power Tips for Nokia
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jbenny is offline jbenny
2007-08-17 , 04:01
Posts: 28 | Thanked: 5 times | Joined on Aug 2007
#17
Originally Posted by phatcat33 View Post
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.
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.