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Old 11-16-2009, 11:00 AM
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Cool Imagio Battery Life Issues = Solved

Ok so the battery life on the delivered phone is an absolute joke. Loosing 10-20% state of charge every 20min is not uncommon! There are two primary resons for this and it is NEITHER what you are doing, NOR what you are running's fault.
1) The device ships in GSM mode and there aint that many damn GSM towers in the US. This thing will connect to your local US cdma network and then search unendingly for a GSM nework on its other RF unit. Set the device to CDMA only mode and you will cut your average current draw to a quarter of what it regularly is. (youll also notice the phone doesn't heat up as much near the RF circuitry)
Settings->Menu->Phone Network Mode
Mode of operation = CDMA only
Changing nothing else, running no extra programs other than startup, having wifi enabled (no bluetooth). You should go from draining 10-20% soc/20min to 10-20% soc/6+ hours.
2) As I suspected some of the lipo stock they are sending out is old / was stored improperly charged. Go/call Verizon and get your free replacement battery (keep both). I fly ALOT of R/C and have been using big boy lipo's for afew years now. The stock battery is 1s 1500mah 1.5C lipo cell. (sorry, I was tired and wrong math in a previous post. The batt is 1.5c not 3.666C)
Now, a lipo should never be run below 20% soc, and longevity (charging/discharging cycles) is kept much higher by keeping discharges to a minimum (try to charge before 30% SOC, always). (please remember that the phone's meter may or may not be calibrated correctly, take the phone as only a guesstimate of what the battery is actually doing)
Testing the capacity of the cell revealed that pulling the battery down to 20% SOC (3.8v) and charging back up to 4.1v (vs an r/c lipo's 4.2v/cell) revealed only 917ma were replaced in the battery. This battery is a complete DUD and should have taken on average 1100-1150ma for a "blah" cell, to 1200-1250ma for a great cell.
In closing... Set the damn phone in CDMA only mode & get a free replacement battery, hoping its good stock! You can play with cabs that turn off push internet, ect to incrase battery life. But it's absolutely pointless until you get a good batt & have it stop searching for non-existant towers!
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Old 11-16-2009, 11:17 AM
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Re: Imagio Battery Life Issues = Solved

will try and report back. Yeah the battery has been the only problem that I have noticed.
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Old 11-16-2009, 11:26 AM
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Re: Imagio Battery Life Issues = Solved

Changing the phone to CDMA only was one of the first things I did. It only made sense. I've been pretty happy with the battery life so far, only charged it once over the past weekend (Light WiFi use, some G3 and lots of texts).
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Old 11-16-2009, 11:41 AM
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Re: Imagio Battery Life Issues = Solved

I agree with your suggestions and observations. I've had the same experience. I'm now perfectly happy with my battery life. Anyone who has ever had a smartphone or PDA knows that battery life will never equal that of a dumb cellphone, so for people just coming to a smartphone for the first time, a little adjustment of expectations is in order.
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Old 11-16-2009, 12:01 PM
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Cool Re: Imagio Battery Life Issues = Solved

Exactly. Smartphones are not something that the average user is going to be able to use for several days without charging like most dumb phones, or two days with whatever they call the semi smart phone wannabe's now.

HOWEVER, I find no excuse for shipping a phone in a state that without far more than basic phone knowledge can not be left in stand-by mode for 6 hours, let alone struggle through a basic 10 hour day without seeing a charger!
Rarely do I have a day that involves more than 20 min of talk time, 10-30 regular txt messages, sometimes 5-10 pic/vid messages. No excuse for a phone not being able to make it through that kind of lightweight daily work...


Obviously changing network mode to anyone on the internet is trivial, but ask yourself how many people know wtf gms or cdma is that will buy this phone!
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Old 11-16-2009, 12:10 PM
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Cool Re: Imagio Battery Life Issues = Solved

Charging time is definately decreased as its drawing less power away from the onboard charger. Im charging around 5-10% every 1/2 hour while using the phone.

It would be nice if the wall-wart charger could deliver a 1500mah charging current. This would be the maximum "fast but retaining longevity" spec of the stock battery and you could completely fill the phone in 1 hour with the phone powered off to possibly 2-3 hours of light phone use. Honestly aslong as the phone was powered on you could probably give it 2000mah and itd work off the extra.
(NOT while using a usb port which could not spec wise support that current draw.)

FYI In the shipped state under heavy use the phone actually draws more power than the chargers can provide & you LOOSE battery capacity even on the charger! (haha talk about sucking!)
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Old 11-16-2009, 12:42 PM
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Re: Imagio Battery Life Issues = Solved

Did you just contact Vz customer service? Did they give you any hassle over just sending out a new battery?
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Old 11-16-2009, 01:05 PM
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Re: Imagio Battery Life Issues = Solved

Are there any disadvantages to putting the device in CDMA only mode?
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Old 11-16-2009, 01:17 PM
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Re: Imagio Battery Life Issues = Solved

Quote:
Originally Posted by t0adman View Post
Are there any disadvantages to putting the device in CDMA only mode?
No there isn't. Unless you are international, there is no reason to have GSM on.
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Old 11-16-2009, 01:39 PM
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Cool Re: Imagio Battery Life Issues = Solved

didn't call CS. dropped by a VZ store yesterday and the girl said they STILL havn't seen the first imagio, but they had some batteries in. highly likely HTC uses the same battery across the majority of their phones. never seen a TP2, but its likely one from it.
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