sdd
Quote:
Originally Posted by cappy
I started at 100% at 6:40 am. Its now 6:47 pm and battery remains at 71%. No Bluetooth, 6 phone calls about an hour in total duration, a couple of checks to weather, and not much else. I did have the GPS locator on, though I did not use GPS today. And I turned off the Airave first thing this morning to see what effect signal strength would have on discharge.
The more that I read of other users experiences, the more it becomes clear that many variables are in play. I see 10% per hour discharge with Bluetooth on. A user on SU said that he saw no noticeable difference when he turned off Bluetooth.
My phone does not get hot, while many others appear to have a significant overheating problem. I turned off my Airave this morning, expecting that it was the reason why the device does not get hot and I also expected that a weaker signal (3 bars) would increase the discharge. There has been no noticeable increase in discharge caused by a weaker signal. And during the calls, the device did not get hot at all. If fact, I just picked it up and it is stone cold. Go figure.
I am ready to conclude that build quality varies from phone to phone. According to the NuePower software, my device draws between 75Ma to 85Ma when idle, whether connected to the Airave or not. As soon as Bluetooth is turned on, the draw goes up to between 160Ma and 211Ma at idle. I have seen others report much higher rates of discharge. It could be differences in the software that is running on different devices, but I am leaning towards hardware build differences or perhaps differences in battery quality or the quality of the battery connection.
I suppose that the only way to isolate the differences among devices is to have many identical devices side by side - same software, same signal, etc. Only Sprint or HTC can do that.
If I were seeing the poor battery life that you describe, I think I would make a single call and see how long it lasts before the battery goes dead. If it cannot go 4.5 hours as HTC and Sprint claim, I would take it back again and again until I get one that does. I have not had to try that, but based upon my battery experiences thus far, I think I would get 4.5 hours.
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i have similar results. phone off the charger at 8am, push email active as items arrive from 9am-5pm another account every 4 hours and the push goes to every 4 hours too after 5pm. its now 10pm, so 14 hours off that charger with a 45 min call and still have 40% left. id say thats pretty good battery life IMO. i cant understand how some people like us are having decent battery life and others report 10% drain every 15 or 30 min thats far from normal draw. maybe people are having unrealistic expectations of the battery. Its similar to the Touch's life. if you have a 4.2 hour talktime battery (from sprint.com) then every hour on the phone you lose 25% or every 12 min call you lose 5% by the math. Same goes for browsing, average 5% every 12 min. so yes if you browse the web for 30 min and a 30 min phone call in a day youve blown 25% of you battery right there, stanby and checking email takes battery life too. so 50% left after that usage and 8 hours in standby will leave you with maybe 50%. using gps will eat battery, wifi will even more. it all adds up and i dont think people realize this fact.
i see a ton of people saying well i want to have push email and web search and use bluetooth and gps and still make calls and my battery last a full day- its simply not going to happen its the nature of the device. Its not different than any other PPC with a similar sized battery like the original Touch. The treos, mogul, and 6700 all had bigger batteries so of course they last a little longer, its an unfair conparison.