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Stiletto Stiletto...it's not just for shoes. Come here to talk about the new SL2, the SL100, or the SL10. Share tips, tricks and pointers, all available via WiFi...just like your music!

 
 
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Old 10-10-2006, 02:55 PM   #1
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Default Stiletto is a hot item! 123F, and sony lipo

Does everyones stiletto get fairly hot in satellite antenna mode? I was listening in my work truck today, picked it up and couldn't believe how hot it felt.

For anyone who knows about LIPO batteries, especially R/C car enthusiasts know how temperature sensitive they are. The batteries used by the stiletto are lithium-polymer, 1S batteries made by Sony. Also, I must point out that Sony has had bad luck with LIPO batteries already. Currently, there is a worldwide recall of their laptop LIPO batteries.

I hope that the stiletto charges the LIPO batteries properly. They have to be charged a specific way. Believe me, I know. I have a 2S LIPO battery for an R/C car and I am having to use a specialized charger, specialized balancer, and a voltage cutoff device. These cells are sensitive! They do not charge like NI-MH or NI-CD.

I measured the temperature of the stiletto using a Duratrax Infrared Flashpoint temperature sensor. First, I took out the battery, left the stiletto in satellite mode then came back 15 minutes later. The front of the stiletto was about 95 degrees, the back bottom was about 105 degrees and the back top was about 120 degrees. Then I put in the slim battery, waited 15 minutes again, and measured. I recorded about 95 degrees on the front, 115 degrees on the bottom back (the LIPO battery cell), and 123 degrees on the top back where the antenna is. I also took off the slim battery cell and measured it seperately. The average temperature of the cell is about 115-120 degrees.
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Old 10-10-2006, 02:58 PM   #2
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I forgot to mention that the max temperature for LIPO cells are 130-140 degrees Fahrenheit before damage occurs.

So keep your stiletto cool!
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Old 10-10-2006, 04:46 PM   #3
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Old 10-10-2006, 04:57 PM   #4
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Old 10-10-2006, 05:00 PM   #5
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mattnin, was there sunlight directed toward the Stiletto? They shouldn't run hot since they've degraded the voltage supply to 5V.
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Old 10-10-2006, 05:58 PM   #6
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Mine has been really strange- sometimes it really heats up and other times it doesn't. I've noticed it gets very warm while charging and when in satellite mode.
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Old 10-10-2006, 08:36 PM   #7
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I'd say it gets warm when charging and playing "LIVE". But having had most of the tuners from the past, I'd have to say this thing doesn't get HOT at all. You should have checked out the old original Kenwood H2A's and Audiovox PNP1's. Now those babies you could actually scramble eggs on. This unit by comparison runs cool!
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Old 10-10-2006, 08:51 PM   #8
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Yea, I was charging and listening live to satelite. There was no sun today really. It was really cold and drizzling up in the Colorado mountains today.
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Old 10-10-2006, 10:44 PM   #9
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The only time mine gets remotely warm is when I have it plugged into the universal home dock.. It's fine with either battery, the temp doesn't change at all during charging, satellite or playback...
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Old 10-10-2006, 11:08 PM   #10
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I think it gets "really" hot when you have it in Sat mode and the screen is not locked ie you are changing channels etc. That was one of the reasons why I returned mine. If you lock the screen it does not get too hot and is bearable. So if you go jogging with the Stilletto and keep it locked you should be fine. Though the small battery life with the slim is an issue (only 2 hours).

I remember when I first posted about this issue how some fanboys came out and started saying insane things like "their dogs breath is hotter than their Stilletto"

Whats scary is the thought of having them blow up like the Dell laptop batteries. I honestly hope that it doesnt happen to anyone
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Old 10-10-2006, 11:23 PM   #11
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hemarnulez... sorry, I am just not buying it. I've used two of these units now and if you had a unit that was getting that hot, then you had a defective one.

I am indeed a fan, but not blindly and if my experience was that these things got as hot as you are exaggerating them too, then I'd say so.

The unit gets warm, but it does not get hot and I've used this thing inside my vehicle and even left it playing in there in the middle of the day. When I came out it was warmer than usual, but not so hot that I was in the slightest bit concerned.

It seems to me you are totally exaggerating or had a defective unit.
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Old 10-11-2006, 12:01 AM   #12
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I have mine plugged in as we speak and I have been listening to live radio for about 45 mintues and the face is slightly warm to the touch as cna be expected. My s50 gets twice as hot after this long. The battery is not warm at all. I have also been changing the stations and moving from Wifi and library as I test recording. I think you may have a bad unit.
hemanrulez how long have you had yours?
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Old 10-11-2006, 12:24 AM   #13
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Well I didnt do the tests the OP did, but I did have a unit that heated up quite a bit. I could see it being about 100 degrees or more. This might not be the case for all units and they might have some defective batches (weren't the Dell Laptop batteries only affecting some customers)

I returned my unit and didnt exchange it for another one. For now I think I will just go with Sirius OEM in my car (though that is probably gonna cost me about $700-1000)
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Old 10-11-2006, 12:41 AM   #14
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Quote:
Originally Posted by hemanrulez
Well I didnt do the tests the OP did, but I did have a unit that heated up quite a bit.
Sounds to me like you had a normally operating tuner. For them to run warm is normal, this is why I said I felt you were exaggerating. What you are describing now isn't a tuner that is running HOT at all. Perhaps the biggest problem is you have no point of reference in terms of how REALLY warm some of these older units got. Also folks need to clarify what HOT means in terms of these tuners. HOT to me is so freaking hot you can't touch it and it maybe frying electronics. Warm to the touch and even very noticebly warm is normal for these tuners.

By the way if they had batteries that would explode don't you think that would have been proven out when they did the heat chamber testing on these units?
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Old 10-11-2006, 12:58 AM   #15
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Quote:
Originally Posted by DAB
Sounds to me like you had a normally operating tuner. For them to run warm is normal, this is why I said I felt you were exaggerating.
hmm, i felt that it got hot and mentioned in a previous post that it seemed like it was about 100 degrees. If thats normal then well..........

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Originally Posted by DAB
What you are describing now isn't a tuner that is running HOT at all. Perhaps the biggest problem is you have no point of reference in terms of how REALLY warm some of these older units got.
Possibly, I dont see why that has to cloud my judgement over the unit I'm using right now.

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Also folks need to clarify what HOT means in terms of these tuners. HOT to me is so freaking hot you can't touch it and it maybe frying electronics. Warm to the touch and even very noticebly warm is normal for these tuners.
Umm ok....it was hot for me. Im not really sure about your definitions there.
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By the way if they had batteries that would explode don't you think that would have been proven out when they did the heat chamber testing on these units?

I'm not sure that this might be the case here, but as we have all seen with the Dell/Toshiba/IBM laptop battery saga stuff happens, even after tests things might be prone to failure.
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