Hot New MBP battery

1. Danny Thompson - 14 June 2008

   A couple of months ago Apple replaced my 18-month old MacBook Pro battery for free under their battery replacement scheme. At the time I was only getting about an hour-and-a-half from the battery.

   The relevant thread is there:

   <http://groups.google.co.uk/group/uk.comp.sys.mac/browse_thread/thread/4 8eddd1a02016c6b/50191f5efebe1747?hl=en&lnk=gst&q=battery+danny#50191f5ef ebe1747>

   I'm not happy with the replacement battery though.

   Unlike the old one it runs *extremely* hot all the time. SMC FanControl reports it as between 81-88 degrees C. That's under no real load at all - with the machine idling, and nothing running to speak of.

   I'm getting about an hour's battery life.

   Activity Monitor shows nothing unusual.

   Propping the back of the MBP up with a pencil or similar to increase ventilation makes bugger all difference.

   But when I take the battery out the temperature drops to 60-70 degrees C within about 10 seconds.

   I'd never experienced temperatures like these with the old battery. With that one the fans barely used to activate. Now they are on *all* the time.

   Coconut Battery reports it as having 93% of original capacity, but 38 load cycles after only two months. This is probably a result of the fact that I keep having to remove the damn thing - something I'd *never* had to do before.

   Before I call Apple can others tell me whether these temperatures are "normal"?

   Oh - MBP 15" 2.16 Intel Core 2 Duo. 2Gb. 10.5.3

   Thanks

   Danny

2. Woody - 14 June 2008

   Much lower than that.

   Oh - MBP 15" 2.16 Intel Core 2 Duo. 2Gb. 10.5.3

   MBP 15" 2.3 intel core 2 duo. 2GB. 10.5.3

   Woody

   www.alienrat.com

3. Danny Thompson - 14 June 2008

   snip

   Thanks Woody. That's really helpful.

   Danny

4. zoara - 14 June 2008

   Yeah, I thought mine was hot running at 78-80 degrees under full load for half an hour or so! That's definitely wrong.

   MBP 15" 2.16 C2D 2GB, 10.5.3

   -z-

   "Ignorance more frequently begets confidence than does knowledge." - Charles Darwin

5. Andy Hewitt - 14 June 2008

   My plain MB is runnignat about 30deg, but that's on the power adapter. In any case, I would have thought 80deg was very high for any battery.

   Andy Hewitt
   <http://web.mac.com/andrewhewitt1/>

6. Flavio Matani - 14 June 2008

   Taking the power adapter out, refreshing about 20 tabs in two browsers and similar, iStat Menus gives me 31 degrees on the battery after five minutes or so of this. 80 on idle is not right.

   flavio matani
   guitar tuition
   homepage.mac.com/flavio_matani/guitar/ www.livejournal.com/users/flavius_m/

7. Pd - 15 June 2008

   Mine's around 45 C.

   It ran quite hot (70-80°C) for the first couple of months I had it, but I was doing quite a lot of video editing. Now that I'm doing more general and less CPU & graphics intensive stuff, generally seems to run at around 40-50°C

   Oh - MBP 15" 2.16 Intel Core 2 Duo. 2Gb. 10.5.3

   MBP 17" 2.6GHz C2D 4GB 10.5.3

   Pd