| | |  | HTC Accessories | Home » » Seidio Innocell 3500 mAh Extended-Life Battery for HTC EVO 4G - Black | | | | | | | Description: | | Tired of running out of battery life when you need it the most? When you can’t get to an outlet, our Innocell Super Extended Life Batteries will keep your HTC EVO 4G moving forward. Our Extended Life batteries utilize premium Japanese Lithium-Ion/Polymer cells to ensure the highest levels of safety and performance while offering you nearly twice the capacity of your stock battery. Super extended life batteries can offer up to 80-100% more battery life. All battery life claims are dependent upon usage patterns, network configuration and many other factors; actual results will vary. | | | Features: | |
• Made from the highest quality Japanese Lithium Polymer cells
• Comes with a black replacement door featuring Seidio's signature soft touch coating
• Keeps your phone charged and ready to go, even with heavy phone and data usage
• Capacity: 3500 mAh
• Adds minimal amount of thickness and comes with a black replacement door to accommodate the larger size of the battery
• After the charging indicator turns green or the battery status shows full.
• For use with: HTC EVO 4G
• To obtain the full capacity of your battery, leave the battery/your phone on the charger for an additional 2-3 hours
| | | Product Details: | | | Product Length:
| 4.5 inches | | Product Width:
| 0.5 inches | | Product Height:
| 2.5 inches | | Product Weight:
| 0.19 pounds | | Package Length:
| 5.7 inches | | Package Width:
| 3.8 inches | | Package Height:
| 1.3 inches | | Package Weight:
| 0.2 pounds | | Average Customer Rating:
|  based on 720 reviews |
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Most "cell phone accessories" shipped worldwide. All "cell phones" ship from wholesale warehouse in USA.
| | Customer Reviews: | |
Average Customer Review:
 ( 720 customer reviews )
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Most Helpful Customer Reviews
355 of 358 found the following review helpful:
 totally worth itJul 25, 2010
By Brendan Burchell
9/4/2011 UPDATE: I have had this battery for over a year now, and it is still going strong. It isn't quite as beastly as when I first got it, but I still can go a full day of hard usage and not kill it. Every once in a while, I get a runaway app that will start burning it down, but it's obvious when that happens, and I've been able to stop it. I still recommend this battery for everybody with an evo, and encourage you to send yours back if you have any problems. I absolutely love my phone, and it's because of this battery.
This battery is ridiculous! I took it off the charger 30 hours ago and it still has 70% of the battery (though that is with normal use - 4g off etc.)
My average wake-time in a day is 18 hours, so I wanted a battery that would be strong enough to take a beating and last all day. That was my main reason NOT to get an iphone (other than their terrible network.) I didn't want my music/internet/video games using the same battery my phone does. I've been stranded before with a dead battery and vowed never again would I have all those devices in one until they made a battery that could handle it. This thing does all that in spades.
Turn on 4g/gps/bluetooth/wifi, the flashlight, have pandora playing, and watch a movie at the same time FOR HOURS AND IT WON'T DIE...not that you would want to do that. I did while trying to drain the battery for conditioning before I learned that you don't need to "condition" these batteries. More on that later...
The battery does add some bulk and weight to the phone, but it feels good in my hands, especially when texting in landscape mode...like I'm holding a video game controller or something. Plus, as many people have stated, the camera lens is totally protected by the little shelf of the battery sticking out. Despite what another reviewer pointed out, the battery does not affect the pictures at all. If it does, you have a defective product and you should return it.
The evo 4g is a beast, and if you want to be able to treat it like one, you really need this battery.
Update: it's now been 48 hours and the battery is still holding at 40%. This has been with pretty moderate use (plenty of phone calls, texting, browsing, downloading, emailing, and gaming,) but with 4g, gps and bluetooth off. I have had wifi on the whole time though.
Somebody left a comment about these lithium batteries not needing to be drained all the way down (in fact, that's supposed to be bad for them) so I did some research and they were right. It's moot though, because it's not really possible to drain them all the way down. Also, as the instructions will tell you, LET THE BATTERY CHARGE FOR A FEW HOURS AFTER IT SAYS IT'S FULL. I put it on the charger with 10-20% left in it, and it charged to "green" in a few hours. So, if you're sleeping ~6 hours a night, this should do ya fine. I got some tips on battery care from the web. Amazon won't let me post the link, but if you're still not sure, just google lithium battery care or something like that.
Simple Guidelines
* Avoid frequent full discharges because this puts additional strain on the battery. Several partial discharges with frequent recharges are better for lithium-ion than one deep one. Recharging a partially charged lithium-ion does not cause harm because there is no memory. (In this respect, lithium-ion differs from nickel-based batteries.)
* Keep the lithium-ion battery cool. Avoid a hot car. For prolonged storage, keep the battery at a 40% charge level.
* Avoid purchasing spare lithium-ion batteries for later use. Observe manufacturing dates. Do not buy old stock, even if sold at clearance prices.
* If you have a spare lithium-ion battery, use one to the fullest and keep the other cool by placing it in the refrigerator. Do not freeze the battery. For best results, store the battery at 40% state-of-charge.
57 of 58 found the following review helpful:
Waiting for this!! Finally!Jul 25, 2010
By hishamf
Finally my battery arrived. Because of the horrible standard battery life I was still skeptical on this one. The instructions say that the full potential of the battery will be after 5-6 full charges but I have charged it 1 full charge so far last night. Took the phone off the charger at 8am, it is not 8:30 pm and my battery is at 74%! I do about 500 texts a day, email, about 18 gigs of internet a month and this looks like finally will handle that. I have listened to Pandora radio for about 1 hour as well and have the screen bright and 4g on just to try and drain it so I can get it dead and charge it tonight. Looks like I wont be able to kill it for a few more hours. Maybe I'll leave Pandora running turn on wifi and gps and let it sit till it dies. Because of the shape of the back cover it is still pretty slim, actually feels better when holding to my ear to talk as well. Great product so far. Might even last two days after fully conditioned on heavy usage.
62 of 65 found the following review helpful:
EVO 4G Seidio Extended battery is the real deal.Jul 25, 2010
By David
This is truly the extended battery we've all been waiting for.
Build quality on the battery door is superior to the original, and it's also a much better design. Tighter fit, great feel. Additionally, it also serves to keep the camera lens from touching the surface the phone is sitting on.
The battery itself is a beast. I've had it now for 3 days, and it easily goes 100% over the stock battery. Last night, I was trying to run the battery down to wipe stats and calibrate it (Custom ROM, etc), and I couldn't get it to die. :P
IMO, I believe you could easily be looking @ 36-48 hours of heavy usage on this one before it finally needs a recharge.
Highly recommended.
42 of 43 found the following review helpful:
 Battery STOPS WORKING properlyNov 28, 2010
By Mcmorrc
To start off, this battery was great while it worked. Battery life was definitely extended to about a 48 hours with a pretty good amount of use, Wi-Fi activated, GPS on, full screen brightness and all the works.
I bought the battery about a month and a half ago after reading how quickly the stock battery lasted and after experiencing it first hand. The battery worked absolutely perfect for approximately a month, charging it every other night. So, basically this thing lasted me 15 charges... terrible! What started to happen with my phone was random shut-offs and when this occurred I literally could not turn my phone on without jump starting it with the phone charger plugged in. At that point I could take it off the charged a few seconds later and it would remain on until it decided to power down again. So what happens when I'm driving to another city or in class all day? No phone access until I return home... I used the battery for about another week until the problem got out of hand where the phone would only stay on for 30 minutes until it would perform its little shutdown trick. Let me add that I would leave the phone on the charger for 3-4+ hours to make sure the battery was topped off before taking it off.
After thinking my phone was the issue (which surprised me because I have never dropped this phone and only babied it), and almost taking it in for service, I decided to return to the phones stock battery to see if there was a much more simple fix. Sure enough, once returning to HTCs battery, I have not had a single issue with my phone. No more random power-downs, no more being without a phone for half the day. I even went back to Seidios battery to see if it would work properly after some rest in its little box. It didn't.
Overall impression:
Seidios battery would have been a great product if it lasted a while longer then it did. If this had happened a year into its use, maybe I wouldn't of been so upset with this product. There is no excuse for a battery to malfunction one month into use. Don't waste your money on a product that will die this quick!
I wish I could give this product 5 stars, but not this time.
24 of 24 found the following review helpful:
A must have for Evo ownerAug 01, 2010
By C-Bo
This is by far the best battery I have ever purchased. Evo owners you have to get this battery, the life of this thing is incredible. I use to get 4 to 5 hours max from my stock battery now I getting an entire day I would say from 7 am to at least 11pm before it gets to the last bar before it dies. This is with texting heavy internet usage and talking throughout the day. I cant describe to you how this battery has open up endless possibilities for this evo. I now can explore without fear of not having battery power later. Honestly this is a must buy for Htc Evo owners you will not regret it I assure you.
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