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Seidio Innocell 3500mAh Extended Battery for HTC Evo 4G

Other HTC Touch Pro2 (US Cellular) accessories by Seidio

Seidio Innocell 3500mAh Extended Battery for HTC Evo 4G User Reviews

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321 total ratings
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11% rated Score 4/5Score 4/5Score 4/5Score 4/5
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StarStarStarStarStar Great Product
User: Dominique Parker, Jan 27, 2012
Great Product at a great price, and was shipped to my house quickly. Will refer friends to this website.
StarStarStarStarStar BATTERY LAST 2X LONGER THAN STOCK
User: CHRIS BOTTORFF, Dec 2, 2011

Pros:  ALL DAY BATTERY/EXTRA BULK, NOT A BIG DEAL
Cons:  CASE HOLSTER LATCH NEEDED SLIGHT MODIFICATION

THE CASE NEEDED A SLIGHT MODIFICATION, WHEN PLACING PHONE IN HOLSTER CLIP, THE LATCH SITS ON TOP OF POWER ON/OFF BUTTON, SO PHONE WOULD BE ON ALL OF THE TIME.

TOOK SMALL FILE AND FILED DOWN ONE SIDE OF THE LATCH SO THE LATCH WOULD MAKE CONTACT WITH THE PHONE NEXT TO THE POWER BUTTON, INSTEAD OF TOUCHING POWER BUTTON FIRST.

TOOK 5 MINUTES TO MAKE MODIFICATION, NOW I CAN PRESS DOWN ON THE LATCH AND IT WILL NOT TURN PHONE ON.

BATTERY LASTED ENTIRE 8 HOUR WORK DAY, AND STILL HAD 25 CHARGE LEFT...I ENJOY THE PHONE MUCH MORE NOW AND WOULD HIGHLY RECOMMEND THIS UPGRADE.
StarStarStarStarStar wow
User: Joe Doe, Nov 10, 2011

Pros:  Last me all day
Cons:  -

I have been reading all the other reviews and i finally got one. Fast shipping and this bad boy is unbelievable. Im a heavy user and i work 12 hours a day, i have this battery for a week and still cant get it to do the 5-6 cycles as it is hard to kill. I love the way the EVO 4G look stock and this battery add a little weight and bulk but is not really like in the pics. It feel good on hand and i can have the 3G/4g all day on with out been worrie about it to die. Unpluged AT 4:30AM and got back home by 6:30PM with 66 left. Highly recommend it.
StarStarStarStarStar big battery
User: raymond white, Nov 10, 2011

Pros:  longer life
Cons:  longer charging time

Its funny. I bought this battery for the extra juice. And it delivers quite well. Its of course bulkier and heavier. Not a problem. I just had to get used to it. I used this one to replace a Sedio 1750 battery. My biggest complaint is it takes a long time to charge. So I still find myself plugging into a charger when I can. Because so far if my battery is down to 25 charge it wont fully charge overnight.
But, Im glad I got it. I now have a stock 1500, a larger Sedio 1750 and this 3500 battery. And when I go camping I now feel comfortable knowing I have enough juice to get me home.
StarStarStarStarStar Best Ive ever seen
User: Christopher Rincon, Oct 25, 2011

Pros:  Battery lasts all day and then some
Cons:  it is a bit bulky

This battery is the best thing Ive ever seen, I use the mobile hotspot on my phone all day while in school, before I got this battery within 3 maybe 4 hours my battery was dead, now I go a solid 8 hours with out shutting off the hotspot and still have enough juice to last me the rest of the day before I have to charge the phone. it is amazing :) I would recommend this to anyone that needs there EVO to last all day
StarStarStarStarStar really good buy
User: tucker fetzer, Aug 5, 2011

Pros:  it lasts all day
Cons:  it does not last two days

Well I was looking at all the other reviews and I decided to just pay the price and get one and man am I happy I took the phone off the charger at 6 am and I had to put it on at 11. It woops the original batterys tail.
StarStarStarStarStar Innocell 3500mAh Extended Battery
User: Paul Morris, Jul 22, 2011

Pros:  Long life
Cons:  -

Great product!
StarStarStarStarStar Well worth the size
User: J binstock, Jun 1, 2011

Pros:  pretty much everything
Cons:  A little bit bulky

Battery last 2days or better with plenty of data usage. Hardly notice it go down and im constantly roaming when im out of town working. Its a little more bulky, but when you have the the full convert combo on its not even a 1/4in thicker than the otterbox w/o extended batt. So far so good no disappointment
StarStarStarStarStar Amazing Product
User: Robert Deeds, May 31, 2011

Pros:  Works as described
Cons:  Big

This is a great product. I use all the functions on my EVO. I listen to books on tape and watch video. Im getting about 30 to 38 hours on a single charge. This is a great product. Its bulky but worth it, if you use an EVOs features..
StarStarStarStarStar excellent talk time
User: Rick Walston, May 18, 2011

Pros:  lasts all day plus!
Cons:  none

what an excellent battery. The battery that came from HTC would last me 4 hours max. The battery last 16 hours and still has life.
StarStarStarStarStar Great Battery Life
User: Nathan Soriano, Apr 18, 2011

Pros:  Triple the battery life vs oem battery
Cons:  Adds bulk to phone

This is a great battery. It might be twice as thick as the oem battery but it triples the time between charges.

Make sure you read the instructions during initial charge and the first few subsequent charges to get the most out of it.
StarStarStarStarStar owesome battery
User: alex tessema, Apr 3, 2011

Pros:  battery life is triple than original battery
Cons:  bulky size

This battery is the best solution for the very short battery life of the original one that came with The phone. I would have to charge the original one by 3pm with regular usage. The 3500mah battery is triple the life of the original one. When I first received the battery I charged it for 8 hours and an additional 2 hours as per the instructions to have optimum battery longevity. The charge now can easily last me 2 whole days with regular phone and web use before needing a charge and it still fits in the original leather case despite its bulky size.
StarStarStarStarStar Love it
User: Michael Nuke, Apr 2, 2011

Pros:   1 day & 12 hrs of enjoyment
Cons:   nothing so far

this extended battery rocks. i can enjoy my HTC evo more than the stock batttery. what more can i ask for. best purchased ive done for my evo. thanks guys more power...
StarStarStarStarStar Extended Battery for EVO
User: Steve B, Mar 30, 2011

Pros:  Battery Life.
Cons:  Cost/weight.

This is the third battery pack I have purchased for the EVO. Runs all day without issue. Charge time and weight is a bit longer, but that is to be expected. Works great with the car dock and Seidio products.
StarStarStarStarStar Just As Good As They Say
User: Darone Bowers, Mar 28, 2011
Love this battery. I was scared of 2 things when I got this battery: 1. that it really wouldnt last like they say, 2. that it would be too bulky. Im glad to say, neither is the case. This battery lasts me 12-15 hours constantly, no hoax! You have to make sure you charge it right per instructions, but after that, its more satisfying than the phone sometimes. I love this Seidio battery so much, im not upgrading to the Evo 3D until they have one available!! Please get this battery if you have issues with your phone regarding power. I highly recommend this battery!!!!!!!!!
StarStarStarStarStar Very Happy
User: Doug T, Mar 12, 2011

Pros:  ohh??? long battery life
Cons:  Having to get use to NOT charging my phone twice a day. -/

Reading the other reviews I was pretty sure the battery would work. I was worried about the extended back. No worries!! Not a big deal. The battery is great. Read my Cons and its kind of true. I was getting ready to go to work and my batery life was 1/2 empty. I still think I need to charge it when I dont.
StarStarStarStarStar Amazing
User: Charlie P, Mar 8, 2011

Pros:  Phone will go multiple days between charges
Cons:  Adds a little Weight but its worth it

This Battery is awesome, i used to get about 6 hrs out of the standard battery, now i can go 2-3 and sometimes 4 days between charges its great!
StarStarStarStarStar Awesome Battery
User: Rick Pavek, Feb 22, 2011

Pros:  Very Long Lasting
Cons:  None

I purchased this item last year and did the full charge thing but it would only last about an hour longer than the standard battery. I used Seidio extended batteries on other devices with great success so was disappointed. I returned the battery and worked with the standard one. That just wasnt working, so about a month ago I reordered the 3500 battery. I charged over night, about 8 hours, and I was able to use my EVO for more than 2 days before the low battery warning screen came on. I use a lot of GPS, internet, email etc.. This is how I remember the battery. I think the first one I had was probably defective. I also like the fact that the cover keeps the camera lense from sitting on any flat surface. Highly recommend this battery for power users
StarStarStarStarStar Im a believer
User: J Cob, Feb 15, 2011

Pros:  everything about it !!!!
Cons:  none!!!!!

Ive had the evo since it came out last june and im completely impressed!!!! The original battery would last maybe 2 and a half hours of full usage. I then purchased an extended battery from a different manufacturer and the battery would last for a good 6 hours but that wasnt a complete work day. It wasnt good enough for me . I then purchased the extended rugged case from seidio but it wouldnt fit with the battery back i purchased. I like have to have my phone complete so i broke down and bought the seidio extended battery to match. Wow was I impressed!!!!! I take my phone off the charger a 5:45 and it lasted until 4pm (15). Just on sunday I took it off the at 9am and i didnt charge it again until 9:30 pm and it still had 13 remaining. This battery is the way to go!!!!!
StarStarStarStarStar Big Battery
User: Robert Gottesman, Feb 5, 2011

Pros:  Extends Battery Life
Cons:  Heavier, Cannot use conventional case or cover

I like that my battery life has increased 30-50 . However, my unit is noticeably heavier . and a conventional case or cover no longer fits my unit.
StarStarStarStarStar Great Battery
User: Michael Rookey, Jan 28, 2011

Pros:  You can leave the phone on with the screen up all day long if you want.
Cons:  -

I purchased this battery about 6 months ago because my Evo would run for about 8 hours and die. Now i can leave the phone and screen on all day long without charging. If you are sick of plugging and unplugging all day long this is the best battery period.
StarStarStarStarStar Great product
User: Dave Jackson, Jan 20, 2011

Pros:  Huge increase in battery life
Cons:  Size,bulk

This thing has been a life saver since the recent update from Sprint and the stupid bloatware apps draining the battery.I highly recommend this to anyone
StarStarStarStarStar review
User: alex durieux, Jan 11, 2011
I love the battery, but was disappointed to find that the Sprint store has it cheaper and with your choice of the black or white back!
StarStarStarStarStar A battery that lasts
User: John Pearson, Jan 10, 2011

Pros:  Battery life(more power Scottie!)
Cons:  More bulky, but I can live with that.

I can use my Evo all day with this battery. I no longer need to charge or switch out batteries. This completes the phone in my opinion.
StarStarStarStarStar The Ultimate Extended Battery for the Evo
User: Daemon Blak, Jan 4, 2011

Pros:  Battery Life
Cons:  None

Ive always gotten good results from Seido Extended batteries but this one is the most amazing extended battery ever. I take it off the charger first thing in the morning and with heavy use including Wifi, e-mail, playing games, phone calls, and everything else, by midnight, the battery still has half a charge left. Unbelievable performance. If you dont have one, get one. It is HIGHLY recommended.
StarStarStarStarStar It works
User: Joel Lukacher, Jan 1, 2011
I get 1.5 days out of a full charge. I have not run the battery dead yet!
StarStarStarStarStar WOW!!
User: Tyler Kartman, Dec 31, 2010

Pros:  Lasts forever, Can use 4G, the extra width protects the camera lens from scratches
Cons:  Width

I love this! It lasts forever and fulfilled my only complaint for the EVO. The battery. I love how I can use 4G now without being paranoid about the battery! And the extra width, isnt too bad, I could live without it for sure, but the extra width also protects the camera lens from scratching when you lay the phone down. Love it!!
StarStarStarStarStar Evo for a day
User: Jon D, Dec 4, 2010

Pros:  lasts a lot longer almost the whole day
Cons:  needs different case

Evos a great phone, wish it didnt use so much battery, good thing this one lasts almost through the day.
StarStarStarStarStar Extended battery for the HTC EVO
User: Bernardo Matos, Nov 18, 2010

Pros:  It doubles the phone work time.
Cons:  Adds weight and not all holsters or cases can be used.

if you want a product which deliveres at with promises this is one. I wish I the price tag was more reasonable.
StarStarStarStarStar Great New Batery addd life
User: William Clark, Nov 18, 2010
This battery has made a big difference when compared to the original battery the Evo came with. Love it..
StarStarStarStarStar Innocell 3500 mAh Battery
User: David Rosson, Nov 12, 2010

Pros:  Long Life, Easy Installl
Cons:  N/A

After first full charge the battery lasted a full 3 days with no charge. During this time I left all apps running and never turned off the phone. The phone receives a lot of use and this battery makes the difference.
StarStarStarStarStar Great Service
User: Richard Chase, Nov 5, 2010

Pros:  Extended time
Cons:  None

Great products, will buy again.
StarStarStarStarStar Never charge your phone again during the day!
User: Ski Coone, Nov 4, 2010

Pros:  Great Battery Life
Cons:  Slightly bigger but worth it.

This make this phone complete. I had to charge my battery during the day and there is no need to now. Its great. The HTC EVO needs this battery!
StarStarStarStarStar Innocell 3500mah extended battery for HTC EVO
User: john matusik, Nov 2, 2010
This battery in comparison to the stock battery is the BOMB it will last not just all day but nearly two days with running aps gps etc. Awesome!
StarStarStarStarStar Great battery
User: D Howard, Oct 28, 2010

Pros:  Havent seen yellow yet!
Cons:  Not any so far.

I purchased this battery a week and a half ago, because my original EVO battery begain to drain way too fast recently and I was about to go to Disney World and needed something that could last me all day.

The first test was the first travel day. We had a 7:30AM flight. I took my phone off of the charger at 4:45AM and it did not put it on the charger until we went to bed around 11pm and the battery indicator was still green! I was completely sold and happy. It has been that same way every day and still is to this day.

Well worth it.
StarStarStarStarStar Stop Here - This is THE BATTERY you need for your HTC Evo 4G!
User: Harrison Smiddy, Oct 21, 2010

Pros:  Excellent Battery Life, More ergonomic with bump out in back
Cons:  Heavier than the sleek looking phone you walked out of the store with (which isnt useful without a battery that lasts). However, I think most users wont find the minor addition of weight an issue once theyre able to use their HTC EVO for a full day.

Best use of cash Ive spent on an electronic item in the past 5 years!!! Performs as described. Im a heavy user of all functions on the phone. Easily lasts 48 hrs as opposed to the 6-7 hrs I got out of the stock battery (GPS, WiFi, Bluetooth, 4G turned off). The phone lasts 20+ hrs with all features turned on (GPS, WiFi, Bluetooth, 4G). Battery and redesigned back panel look and feel like OEM equipment. Excellent product!
StarStarStarStarStar THANK GOD!!! FINALLY A BATTERY THAT WORKS THE WAY IT SHOULD!!
User: Dave Serda, Oct 2, 2010

Pros:  LONG LIFE!! LONG LIFE!! LONG LIFE!!!
Cons:  NON THAT I CAN FIND@!@

Recived the battery quick..thanks for the quick shipping..very nice. Okay.So i charged it for 24hours straight. Put the battery in at 9:30a.m. and I used my phone as normal. Text all day.Internet..lots of game time at work. 10:24p.m that night..still at 44.0 Battery Life!!! NOW THIS IS A BATTERY!!!!!!!!! THANK YOU THANK YOU!!! And it still fits in my belt case.!!!!! ANd I saved 10 off using the Promo Code I found on Google..
StarStarStarStarStar Works well
User: Brian Larsen, Sep 26, 2010

Pros:  Longer Life
Cons:  Heavy

To be fair, I only used the stock battery for the first day I have the EVO. Let it charge for 3 hrs after the green fully charged lite came on. Phone lasted about 10 hours of med duty use. New extended battery lasted a day and a half with much more use. The only flaw is the weight. Its a bit more heavy, but worth it. Would buy again.
StarStarStarStarStar Just Do It, I have no regrets
User: Darren Barr, Sep 23, 2010

Pros:  runs everything ON for a solid day including Pandora for many hours
Cons:  a little thicker but it really is no big deal

This is a must have if you find your battery dies before the end of your day. I never have to recharge until I go to bed at 11pm and if I didnt have a heavy day of usage it lasts 2 days.
StarStarStarStarStar The logical EVOlution choice for your EVO 4G!
User: David Gold, Sep 3, 2010

Pros:  Amazing life
Cons:  A bit bulky

Having survived a month with the stock battery (which always had me paranoid as to how often I needed to plug in), I boned down and got the SEIDIO 3500mAh extended battery.

Amazing.

I can go a whole business day and then some without worry. After 12 hours - I still have on average about 40 to 50 remaining. Nice.

It does add a little bit of bulk to the phone, but compared to the standard battery WITH the SEIDIO bumper case, it actually seems slimmer.

Well worth the purchase!
StarStarStarStarStar battery
User: pasquale Rulli, Aug 26, 2010
This battery is awesome!!! I get nearley 18 hours of use out of one charge. I am on the internet and phone all day . Its great!!
Just need a case that covers the new extented battery!!!!!!
This battery was worth every penny spent on it.
StarStarStarStarStar great
User: kelvin ros, Aug 7, 2010

Pros:  battery looks really good.i thought it was going to look to big but it fits in my pockets and looks good.battery life is really good one charge last me the whole day with heavy data use.
Cons:  -

this battery last a whole day with heavy heavy data use even with 2.2 and flash aways on. Te size is pretty good it still fit in my pockets and it comfortable to grab. Its look way better than what it looks in the picture. I am glad i bought it. Seidio is a good company recognize by sprint so it wont void your warranty.
StarStarStarStarStar You wont be disappointed
User: Josh P, Aug 4, 2010

Pros:  Lasts all day
Cons:  Makes phone slightly thicker

Almost no downside and well worth the cost. You will not be disappointed!
StarStarStarStarStar Charge less
User: Thomas Wolfe, Aug 2, 2010

Pros:  All day with out charging
Cons:  -

I use my EVO for every thing. I am a heavy data user. The battery that ships with the phone is ok but I would have to plug my phone in 2 to 3 times a day to charge the battery. But with this one I plug my phone in every night and it last me all day. My friend has the same battery he uses his phone a little less and he has to plug it in every 2 to 4 days. Also to get the best battery life after your light has turn green keep it plugged in for a few more hours. I have notice a huge difference by doing this.
StarStarStarStarStar Biggest Evo complaint finally resolved!
User: Shawn Armstrong, Jul 24, 2010

Pros:  Comes with its own matching cover. All phone functions still fully usable.
Cons:  Increases phone width.

I recently switched from an iphone to the HTC Evo because it was an all around more powerful device plus I live in an area that has 4G coverage. I did a lot of research prior to switching. A vast majority of the complaints I read about the Evo were centered on the battery life, or lack thereof. The fact is that the phone is so powerful that it drains its battery quicker. Previously, If I had a full charge at 8 AM, I would usually need to recharge around 5 PM. There were generally two solutions to resolve this issue prior to this Seidio battery 1. Carry around a charging cable to plug into a car charger, wall charger or work computer. 2. Pack an extra 1500mAh battery and swap them out.
Now that I have this 3500mAh Seidio battery, I have double the power and can go all day without needing an extra charge and without having to turn off any of the phones best features (4G, Wifi, GPS, etc.). Due to the size of the battery, it comes with its own cover for the back of the phone. When the new cover and battery are installed, all of the rear features on the phone are still fully functionable (8 megapixel lens, led flash, speaker and kickstand). There is an obvious drawback with this battery. The width of the phone increases by about ¼” inch but I can still carry it in my pocket with no problem.
So if you own the HTC Evo, this double duty battery is a MUST!
StarStarStarStarStar Love it
User: Dom F, Nov 24, 2011

Pros:  Long lasting
Cons:  Makes my phone fatter

I was holding out from buying this battery because I didnt want to make my phone fatter I have an htc evo and love it but the battery dies constantly.after buying battery I can use my phone all day with out having to charge it and I use my phone a lot gps, ipod, calls and apps.had it for a little over a week and cant believe how stupid I was waiting to buy this .great great battery.just wish they could make it thinner
StarStarStarStarStar So far good deal
User: Juan Karlos Rosa, Oct 19, 2011

Pros:  3rd day with battery and I only charge 2 times.
Cons:  No cons, maybe a little bit heave, but no biggie 4 me.

Im always Surfing/Texting/GPS sometimes for a long period of 3 hours/Life Screensaver and Bluetooth. First charge was for 11 hours, per instructions it has to be 8 hours charge. It last around 13 hour’s juice and still has like 40 battery life, it’s just me, always like 100 juice. Second charge it’s on the works. I will know today 4 sure. Instructions said charge 5-6 times 2-3 extra hours after the light is green for better performance. Since my first charge was 11 hours instead of the 8 hours it required for the first charge I will charge 5 times the extra 2 hours. Let’s see what happens. As for now I’m happy with it.
StarStarStarStarStar Extended Satisfaction
User: Velda Austin, Aug 21, 2011

Pros:  Long lasting charge
Cons:  -

This extended battery for my Evo is well worth it. I used to have to sit by an outlet everywhere I went. I traveled with my wall charger and car charger at all times. Not any more. Now, even after about 15 or 16 hours, I still have 50 to 60 battery power left. I highly recommend this to everyone.
StarStarStarStarStar The Best Battery!!!
User: Steven Wagstaff, Mar 15, 2011

Pros:  Battery Last all day!
Cons:  I wish Seidio would make a less bulkier case.

The original battery for the EVO sucks then I brought another battery that was 2700mah and it did ok. Then I brought this battery and I can use my phone all day and still have about 40 percent at 11pm. The only problem that I have is no matter how long I charge the battery when I take it off the charger it starts off at 100 power but immediately loses 5 to 10 percent power not a big deal but does great the rest of the day.
StarStarStarStarStar ITS GREAT!!!!!
User: Yolanda Burgin, Nov 23, 2010
I love my new battery! It works really well, I leave the house at 3:00am and then I put it back on the charger at about 11:00pm and I still have 32 left every night. This is one of the best purchases I have made for my Evo 4g.

But there is one downside the battery does runn low if you turn on your 4g and wi-fi. I still turn off everything else but I do talk on my phone at least eight hours a day.
StarStarStarStarStar Extended 3500mah
User: Tony Thom, Oct 5, 2010

Pros:  Less charging time at the AC Adpater pump, More time driving a fun phone
Cons:  The battery may not be able to be truly monitored by Battery apps

Well worth the cash! No bones about it. I dont have to turn anything off, plus I watch multiple music videos and movies. The GPS stays on now as well as my phone goes in and out of service (which also uses alot of battery although newer phones handle it better than how the old ones would go digital/analog/digital).

If you twisted my arm for a CON. its battery programs not reading the 3500Mah correctly. I start at 100 after charging it over night for approx 8 hours. Once I unplug it, it goes from 100 slowly to 93. then it starts to taper off slowly and lasts for about 2 days before I get to 15. Sure it could be the battery but I have seen other people describe the same thing. I tried Battery Indicator and some other android apps.
StarStarStarStarStar Too expensive for its performance
User: George Hancock, Apr 14, 2011

Pros:  Double standard battery life
Cons:  Too expensive for its performance. Bulky.

After following the recommended 8 hour + 2 hour charge times and after 5 subsequent charges I get almost 2 full days from a charge but was getting over a full day with standard battery. This includes very minimal phone and browser use with Bluetooth and GPS off when not using. Also use app killer to reduce battery usage. It is also much bulkier than the standard battery. Not worth the money.
StarStarStarStarStar not happy
User: maurice hendricks, Feb 24, 2011
the lock on the case is terrible. it doesnt stay lock and my phone has been dislodged a few times. the locking system is a joke. is it all cases or just mines. and the battery last a day. it gives me about 4 more ours then the original one. i thought i would at least get a full day on a full charge. but that has not happened. please address this issues.
StarStarStarStarStar Seido 3500mAH extended battery
User: Allan Singer, Feb 10, 2011

Pros:  long life
Cons:  fragile

Bought the extended battery about a month ago. I use the EVO extensively at work and I drive from job site to job site. I work in a rural area and the phone is constantly going in and out of service areas. This battery will last a full 10-hour shift thats run ning the GPS, bluetooth, etc.
I am very happy with the extended life the battery provides to my phone.
Heres the Con:
The cat knocked my phone off the counter and into the water dish. I took the Seido rugged case apart, removed the battery and dried everything off. There was no water on the battery. When I reassembled the phone, no worky. I put the original HTC battery in that came with the phone and it started right up. For the money I paid for the battery, I would expect a little sturdier construction, but this is the same complaint the guy had who bought the Seidio 1750 mAH battery.

Overall: yeah, I know its my fault the phone went into the waterdish. I dont know if its because of the water or if something happened when I removed the battery, but for the money, Seidio could do a better job of putting these things together.
StarStarStarStarStar Battery extends life but not enough
User: Bob King, Jan 29, 2011

Pros:  Battery makes the phone almost usable
Cons:  Not long enough life

The phone battery as shipped is almost a joke. It runs down in a few hours or less. To make the battery last, you have to disable a lot of the cool features of the phone, which is why I bought the phone in the 1st place. The extended battery here helps a great deal, but I still cannot get a full day out of the phone if I use many apps. I would gladly have double the weight and size if I could just get the battery to last, as the features of the phone are right up there with my I-phone, but the battery life is a serious shortcoming. This battery helps, but not enough for me.
StarStarStarStarStar beware, brittle back cover!
User: adam felson, Dec 8, 2011

Pros:  long lasting battery
Cons:  more weight to an alredy too heavy phone, brittle cover

beware seidio products: their back cases are very brittle and the little tabs will eventually break no matter how careful you are. Not for people who experiment with ROMS and have lockups that require battery removal. Seidio will not honor their warranty regarding the back case. Replacement for it is $20.
StarStarStarStarStar BEWARE: Back cover is JUNK
User: Adam Felson, Nov 2, 2011

Pros:  long battery life
Cons:  If you dont get a case, youll have to use duct tape!

Ive on occasion had a bad phone, SD card or some other reason for a phone that has crashed a few times and required me to remove the rear cover. First seidio extended battery covers top latch broke after a few removals and I attributed it to not being careful.
I bought a second extended battery thinking that Id get a new cover, and have two batteries.

Now my second back covers tabs have broken. It only takes about 4 removals before the tabs crack and break off. They are VERY brittle and flimsy! I was always very careful, and they broke anyway.

Seidio will not honor their warranty regarding the back cover. They want $15 for the cover alone!
StarStarStarStarStar New Battery does not work..
User: Steve Bokleman, Oct 28, 2010

Pros:  HTD Depot got it to me fast..
Cons:  Does not charge..

Purchased the 3500 battery and got it in the mail yesterday.. after 40 minutes of charge, the green charge light came on, but the phone refused to boot. The opening screen comes up, but then shuts off.. nice QC!!

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