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Ever since I made the jump from BlackBerry to countless other mobile platforms, I have been primarily displeased with battery life. Some platforms are clearly less power-hungry than others, but in all of my testing and probing, I have yet to find any device that truly matches the longevity of a 'Berry. Instead of charging my phone once every two or three days, I've been forced to charge my phones every day, if not twice per day.

In having to re-power my phones so much, I became worried about what it might be doing to the life span of my phones' batteries. (I'm not as worried about phones with removable batteries as those can be replaced pretty easily, but more so worried about what this may be doing to non-removable batteries in tablets or the iPhone.) Google searching for “the best way to prolong your phone's battery” will likely yield several different suggestions on how to properly care for your battery.

I've seen several articles and forums suggesting users let their phone fully discharge – to the point it powers itself down – before plugging the phone up, and charging it while powered off for anywhere from three to eight hours. Other sites suggest plugging your phone in every chance you get, not ever letting your phone fully discharge. Even speaking with associates at wireless stores can lead to some conflicting answers. So which is the correct method?

The fact is, your cell phone (and/or tablet) uses a Lithium-Ion (Li-Ion) battery. Replaceable or not, the Li-Ion battery in your device will not last forever. But with the proper care, you can make it last much longer. This is especially beneficial when batteries are not easily replaceable.

According to Battery University, it is best to keep the depth of discharge (DoD) small. This means that plugging your phone up often is the best method of keeping your phone charged. That said, leaving your phone plugged in too much or only letting it discharge a little before plugging it back in every time can be just as detrimental as fully discharging too often. Your best bet is to let your phone drain to 40 or 50 percent before plugging it back up, though charging before or after those thresholds are not bad either. Think of it as exercising your battery; too little or too much can both be bad.

When the battery in your phone or tablet is created, the manufacturer puts it through stress testing and it gets rated on the level of charge cycles it can withstand before it reaches "end of life." Usually these are rated between 500 and 1,000 charge cycles. Battery University provides a table that can help quantify how partial charges can affect battery life. Fully discharge your battery every time before plugging up and you may only see 500 charge cycles, but reduce the DoD from 100 to 25 percent and you might experience 2,500 cycles. Don't take these numbers as fact, but rather a rule to go by. "Specifying battery life by the number of discharge cycles is not complete by itself; equally if not more important are temperature conditions and charging voltages," says Battery University.

Keep in mind, too, that in use, your battery can lose calibration. It is also good practice to fully discharge your battery periodically and fully charge while powered off to recalibrate your Li-Ion cell. Letting your battery drain to a “zero” charge level will help display a more accurate battery charge level reading on your phone's display. Tech Republic also suggests keeping your batteries protected from excessive heat, stating, “Heat can overexcite the chemicals in your battery, shortening its overall lifespan.”

Despite what you may read and all of the different techniques out there for keeping your Li-Ion battery healthy and in great shape, the methods are pretty cut and dry. Here are some takeaways:

  • Charge your battery frequently
  • Don't leave your device plugged in all the time
  • Keep it protected from excessive heat
  • Fully discharge the battery every months or two for recalibration
  • Don't be afraid to use your battery

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Farhan Ramlee my phone is a O.2. xda atom exec has 48 hours batery life because there is external power and normal batery power so mine is awesome!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Jullian Thomas IT SUCKS!!!!! THUMBS DOWN TO MOTOROLA AND THEIR CLIQ!!
Jason King My battery life is GREAT , I'm an iPhone 4 user & I don't even think about my battery life anymore .. When i had the Bold 9000, Bold 9700, BB Curve, iPhone 3g, droid Eris , droid 2 and the thunderbolt battery life was always an issue like damn i couldn't go anywhere with out thinking wait ... wheres my charger ... Cant Speak on any other phone tho ..
Equaknox Knox I m a evo user..run a lot of widgets..do just about evrrthing on.it..movies..music..web...i basicall never put it down..only when hvn sex..lol..chrger in car..n house..n one in my pocket.with an extra battery on stand by in pocket if i need..understand...smdh
Gabriel Freeman Mine is awesome. Cyanogenmod 7 on a Mytouch 4G underclocked to 768mhz. About 20 hrs of battery life. About 15 with lots of use.
Erman Guido The best battery life is on my Xperia Play!!!
Braden Rather Atrix- fantastic. Only drains when watching youtube videos
Nyle Ahmed Amazing on the Samsung focus
Luc Rohan Stuart Vincent I have an HTC thunderbolt, and on the standard ROM it doesn't have a battery "life" to speak of! With the thunderstick GB rom, however, I easily make it through the day... on a gingerbread rom! With 4g enabled!!
Adam Tamer Khodier I have the g2 and when i first got it it got me mad becuz it would die in about six hours later i learned u can turn off the data plus i use my data but not every second so wen i wana use it ill turn it on its no big deal and my phone lasts me a day and a half 4g is the battery killer
Dale Lyster I use my iPhone 4 a lot with in one day and it last a while. I have had two Android phone and their batteries sucked. iPhone had one of the best battery life's.
Tim Davis Horrible on my Thunderbolt
Tim Buttry HTC evo 4g with the 3500milamp battery
Jennifer Favreau Regis Samsung galaxy captivate. With task killers.....12 hours, maybe more. Without task killer.......sucks!!!!!! My blackberry was waaayyy Bette.
Jamie Young Samsung infuse: awesome phone, sucky battery life.
Dwayne Demaurivert Evo 3d gets 10 hours pretty good for texting all day on Facebook like I am now and music love this phone no lag, fuck apple
Nathan Wright Great on my Samsung Focus
Nick Dushack iPhone 4, 1 and 1/2 days with heavy use. 4 days with light use.
Nick Koval Sensation 4g is awesome
Jenny H. Liu I have the Samsung infuse and I can honestly say that the battery life is good. I have android booster and juice defended ultimate on my phone, so it helps extend my battery life. I turn off my GPS ans wifi when I'm not using them. When I use my phone constantly to play games, watch videos, text, etc, it can last 7-8hr. On moderate use, it can last 10-12hr. And on light use, it can last over 16hr.
Joel Diaz There are a variety of ways to get the best out of your battery. Decrease Screen brightness while displaying a dark wallpaper (no live wallpaper).keep gps, WiFi and Bluetooth turned off until needed and disable auto back ups until needed. There are other ways as well. Blackberries currently have the best battery life.
Ateeb Tallaat Khan Heres what I have been getting with samsung infuse : 10 hours, 20 hours ... So far. Second time around I installed juice defender and auto real killer and actively turned off tasks. Have data turned of and use wifi only. When I leave the house I turn wifi off
Adrian Fernandez Nexus S 4G here, depends on how I use it, I've killed it in 8 hours and it's gone so far as 20 with moderate usage. Average day will give me 12-14.
Matthew J Callaway HTC Thunderbolt sucks with battery life. But its a sweet phone.
Andres Barroeta 3500 mah seidio is good in nexus s soooo bigger
Gregg Borden i wouldn't know. its to busy reseting to figure out..
Battle Tyebrea ...htc sensation
Battle Tyebrea When I dnt have everything syncing and when I'm moderately using it my battery last ALMOST half the day . Whenever I get a new phone I make sure I but 2 extra batteries because smart phones are known for their crappy battery life !
Pierce Swan 14-18 hours of good use and good amount of web use. 5 hours of screen on usually. Damn good, its called undervolting. Get on board, just don't be dumb and brick your phone... - Samsung Galaxy Vibrant
Gordon Christie Awful I have a galaxys2 tho waiting for update
Winston Bhagirath Galaxy s tmo. Sucks and I have a power skin.love the phone....oiet user
Surendrasinh Jhala My nokia e 71 used to last for 2-3 days but on xperia arc cant even stay for 1 day...and on heavy use only 12 hours....
Boyan Novakov 1 day.... working (I leave charged and I come back drained)
Zino Vikman I'd like to tell you all about it, but everytime i try my battery dies on me in the middle of a sente
Tim Fuhrmann 2-3 days with moderate use, with wifi and bluetooth enabled on my Bold 9780.
Tham Ye Yang Quite contented with my iPhone 4, has like 3x longer usage than my previous Droid 1. Easily get through the day.
Imhotep David Blot I use my mytouch 4g for a whole day without my battery dying I just have my screen on the lowest brightness
Jordan Thomson HTC my touch 4G battery sucks! I'm always on my cell phone so I understand that but I have to charge it at least 3/4times a day. And when I'm in the car I keep it always on charge
Antonio Pagan Motorola photon 4g last me 12 hours n I use it alot love it better than the evo 3D
David Wilson HTC EVO 3d. Don't even last me thru the morning before i have to charge it..... Dislike.... Damn u android!
Zach Ortstadt Terrible. The palm pixi sucks dont get it the battery lasts barely a day with light to moderate use all I do is text basically. Check Facebook a few times.
Cristian Henriquez EVO 3d, its alright. Might just get the MOTO xprt for the extended battery and physical keyboard
Shane Lockett Droid charge, pulled off charger at 4:30 a.m, used gps for an hour, drained to 70% by 6, on charger now at 19%.
Brandon White The Blackberry has the best battery in the market and that's only bcuz the android phones always have stuff running in the background even though the task manager says you killed everything. That's why I'm sticking to my Blackberry Bold.
Alan Pang EVO 3d. Enough said
Jose Perez Mine fuking ass its losing battery wile im righting this right now
Argenis Reyes On my sensation 4g I could last from 10 am till 6 or 8 depending if I used it heavily or moderately...but I could go 2 days with my BlackBerry 9700 :/....
Michael Bell Samsung epic 4g sucks have to keep two extra battery's with me
Darryl Mouzone Well for the Atrix the battery life was horrible until the Gingerbread update. Now it's good. As for the iPhone 4 I have the battery life is pretty decent. I don't have any problems with battery life on either phones so I have nothing to complain about:
Ronnie Cave I stay heavy on my iPhone 4, unplug it at 6 am, don't plug it back in till about 12-1 am still has over 30% battery left on it
Ah Loy Sucks, I wanna put on my favourite cases but always end up with a portable charger!
Gabe Grover Sensation horrible but gslate amazing
Zach Carolin Better then yours
Nizar N. Alani It's so bad I garage it every day
Taz Brannan Sucks!
George Kosta Petroff All I can say is GREEN POWER to the rescue!!
Robert Centennial My samsung focus gets me through the day and thats all I can ask for. I am sure if they made the screen tiny, put in a 600mhz processor, and dumbed down the phone like BB it would last forever. But then I would hate my phone.
Muzafar Umarov 20-24 hours. TMobile H2 stock battery
Naram Moshe Good enough for me using a lot of internet and texting. My Hero lasts from when I wake up at 6 am to 11 pm
Anthony Brown DROIDX and evo 3d both last me all day with moderate usage, a little better on the DROIDX
Alan Bowers 3GS isn't very good, waiting for the 5
Arron Boag Terrible can only last 3/4 of a day, of solid use, before going flat (iPhone 3GS)
James Roberts I can get 2 days out of my iPhone but I used to get 2-3 out off my blackberry bold.
Mohammed Nabout iPhone 4 is good for me it lasts all day
Mark De Berardinis Inspire 4G - when I go to work at 9am it's full... when I get off @ 6:30, it is dead. and that is not touching it. WiFi is the only thing running.... kinda sucks!
Terry Fraser Isbell DROID INCREDIBLE & IT SSUUCCKKSS!!
Wen Francoix Photon's 4g battery life is superb, battery and data management settings make my phone go on all dau and i play games, text, browse, watch videos and phone calls no that many but i do.
Nick Hill HTC inspire-on WiFi this battery will last all day and more with heavy use, but when connected to H+ you can almost see the battery drain!
Angel Arroyo EVO 4g unplugged about 9am now it is 10:23 am and down to 82% it seems the first 20% goes fast after that the drainage slows down.
Påsqüål Sålåz Horrible cause I have a Android. Evo 4G.
Kirk Patoucheas Iphone 4, im always on the internet, texting and making phone calls and my battery life is really good, usually 1-1/2 to 2 days
Dalton Aeschlimann I have a rooted CDMA HTC Desire, that's also over clocked. I can get a day out of it on heavy use. When it was stock and not rooted I got half a day on heavy use.
Vashawn L Brown Well blackberry has the best battery life that's y I'm getting the blackberry torch 9650 when it comes out
Joseph W Rodgers honestly the battery life is terrible on my htc thunderbolt but it still comes down to usage and whether or not you root your phone to get rid of some of the crap thats always running on your phone. My phone is running on low battery all the time because of how much i use my phone..........and because the battery life sucks on thunderbolts.........
Alex Shefferman OG Droid. I use JuiceDefender Ultimate and my battery lasts the entire day and I've had this same battery since the droid came out. JD has extended my batter life by over 1 and a half percent.
Michael Miller Acceptable now with my Nexus. Had to ditch my Evo, 5 hours just doesn't cut it.
Carlos Quinones Sensation 4g - it gets me thru the day if I keep it on 4g. Usually I keep it on 2g unless I'm doing some intense browsing or video streaming or downloading.
Justin Edwards EVO 4g charging it every day!
Tim Gruber my desire gets decent battery life, probably 10 hours of moderate use
Michael Drewitt Evo 3d battery life for the win, lasts all day!
Demetria Brown It sux on the htc sensation. Even though I stopped using live wallpaper. And frequently kill apps via task manager. The battery will still drain even though I'm not on it.
Ruben Quique Moreno Sabido 2 days on Galaxy tab 7 inch light to moderate use. I love these thing dont go anywhere with out it, just put it in my front pocket and go.
Jose Sanchez ,i have a droid Incredible, need i say more lol
Christian Mcniven Atrix went trough one whole day and kept going till 2 the next morning I was on wifi the whole time and listening to music playing games and texting lick crazy so I think Im good!
Gordon Simon Unnecessary apps on todays phone drains my battery
Darren N Anderson POOOR, on my Milestone 2, and I'm wonderin' if da battery life for this phone is jus' like dat. I beg some1 tell me, then "like" this comment if u've replied. Thanks
Sonny Waraich Windows phone mango beta2- battery life is pretty good.
Derrico Brown It's so-so. The HTC Evo 3D has a lot of features that uses up the battery power. But for $10 i got a back up battery and dock charger, so I never have to worry about being without power on the go.
Justin Wilson The worst on htc sensation My battery dies around 12 o'clock in the afternoon where can I get a extended battery from
Aaron Terrell EVO 3d drains with moderate use by early afternoon. Awful.
Lawan Wrencher Sensation ok
Nick Soucy i usually go through 30% of my battery and thats with a moving background and a bunch of use. (droid x)
Ispongklong Dacoycoy all i can say is thank God htc desire hd can change the battery unlike the I-_ _ _ _ _.it sucks super sucks
Huey Liggins Great! 3GS lasts hours while playing music. N a great deal of time watching movies. I turn my 3G signal off though. My gf has android. Awesome phone but always running out of battery.
Gabriela Aguirre Samsung epic i love it is
Gustavo Enrique Barriga i still using my Nokia E71 since 2009 and this battery is awesome, on hard use,- 1 charge x 2 days :-)
Robert Skeen It sucks!
Derek C Jones Batter since I got a extended battery
Darrien Glasser Triumph usually lasts 10-12 hours with relatively heavy use. It works fine for me.
Cody Sulouff IPhone 4- I listen to a lot of music, play games, text, use facebook and watch YouTube videos and the battery hold up pretty well. It has never died on me, I just have to charge it every night before I go to sleep
Danny Téllez Decent if I don't touch it.




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