<table cellspacing="0" cellpadding="0" border="0" ><tr><td valign="top" style="font: inherit;">I guess I should have said I don't use WiFi; I am using T-Mobile's data connection in the US.<br><br>--- On <b>Wed, 2/17/10, Nils Faerber <i><nils.faerber@kernelconcepts.de></i></b> wrote:<br><blockquote style="border-left: 2px solid rgb(16, 16, 255); margin-left: 5px; padding-left: 5px;"><br>From: Nils Faerber <nils.faerber@kernelconcepts.de><br>Subject: Re: N900 Temperature Question<br>To: "Tim Ashman" <tim@ashmans.net><br>Cc: maemo-users@maemo.org<br>Date: Wednesday, February 17, 2010, 11:18 AM<br><br><div class="plainMail">Tim Ashman schrieb:<br>> On Wednesday 17 February 2010 07:43:56 am Chris Vail wrote:<br>>> A couple of times I have listened to one of my favorite streaming radio<br>>> programs on my N900. Each time I listened until the battery was used up<br>>> (neither time did I start with a full charge),
and I noticed that the N900<br>>> was rather warm. Now, I listen with the unit in my shirt pocket and with<br>>> the ear plugs plugged in. My shirt pocket has other plastic cards in it.<br>>> and a sweater over it, so the unit is not getting much air circulation.<br>>><br>>> So, I am wondering, am I exceeding the heat specs for the unit by doing<br>>> this? Would I have a problem if I started with a fully charged battery,<br>>> and ran for more than an hour or two? If I plugged in the power cable and<br>>> had the N900 on a desk in front of me while I listened, should I expect the<br>>> unit to be cooler over a long period of time?<br>>><br>>> TIA for your attention.<br>> <br>> My n900 gets very warm on the left side when I stream or download for a long <br>> time. It never feels like it is about to melt or anything so I've just <br>> assumed this
was fine. It is never so warm or hot that I can't hold it.<br><br>All of this is pretty normal.<br>WiFi can eat quite some energy depending on what you do and how far away<br>you are from your access point and configuration of the access point.<br><br>The power amplifier in the WiFi module itself and the corresponding<br>regulators in the device all carry a certain amount of energy loss,<br>getting more the more energy is going through them - pretty normal.<br>Nothing to worry about...<br><br>But it show quite clearly that WiFi on battery is not ideal for long<br>term continous use liek streaming audio, except you have a power adapter<br>attached ;)<br><br>PS: Try the same use-case with a HTC-G1 (aka Android Dream) - this gets<br>*really* warm toward the lower end where the power plug located -<br>presuably also the spot where the voltage regulators are located...<br>excessive use (charging + high power WiFi) even caused G1s to slightly<br>melt
the plastic cover...<br><br>> tim<br>Cheers<br> nils<br><br>-- <br>kernel concepts GbR Tel: +49-271-771091-12<br>Sieghuetter Hauptweg 48 Fax: +49-271-771091-19<br>D-57072 Siegen Mob: +49-176-21024535<br><a href="http://www.kernelconcepts.de" target="_blank">http://www.kernelconcepts.de</a><br>_______________________________________________<br>maemo-users mailing list<br><a ymailto="mailto:maemo-users@maemo.org" href="/mc/compose?to=maemo-users@maemo.org">maemo-users@maemo.org</a><br><a href="https://lists.maemo.org/mailman/listinfo/maemo-users" target="_blank">https://lists.maemo.org/mailman/listinfo/maemo-users</a><br></div></blockquote></td></tr></table><br>