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  • BOOST Case - Protective Case & Extended Battery for iPhone 4 4S (Fits All Models iPhone 4S /4)
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BOOST Case - Protective Case & Extended Battery for iPhone 4 4S (Fits All Models iPhone 4S /4)

| 4 answered questions

Currently unavailable.
We don't know when or if this item will be back in stock.
  • Doubles battery life for iPhone 4/4S (All Models)
  • High capacity 1700 mAH battery hidden inside ultra thin durable case
  • Sync & Charge simultaneously
  • Slim fitting and nearly weightless design minimizes any added bulk
  • Boosts cell reception for iPhone 4

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Technical Details

  • Size (LWH): 7.5 inches, 1 inches, 4.4 inches
  • Weight: 2.08 ounces
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Product Details

  • Product Dimensions: 7.5 x 1 x 4.4 inches ; 2.1 ounces
  • Shipping Weight: 4.8 ounces
  • Shipping: Currently, item can be shipped only within the U.S.
  • ASIN: B0044TM0OC
  • Item model number: BC-i1700B
  • Batteries 1 Lithium ion batteries required. (included)
  • Average Customer Review: 3.9 out of 5 stars  See all reviews (446 customer reviews)
  • Amazon Best Sellers Rank: #65,616 in Cell Phones & Accessories (See Top 100 in Cell Phones & Accessories)
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Product Description

Boost Case is an ultra lightweight and thin stylish protective case that also doubles battery life for iPhone 4/4S (Compatible with all models). Made for iPhone certified by Apple. Boost Case combines the stylish and durable protection of an easy-grip case with the power of a maximum capacity rechargeable battery.

Customer Questions & Answers

Customer Reviews

I sent at least 3 separate emails to customer service (this is the only way to contact them)and I am yet to get a response.
Stanislav Skarbo
Then the side has a very small sliver of plastic that holds the top portion to the bottom portion, that broke (somehow) and now the side of the case has a gap/overlap.
J. Rigsby
I like the fact that the case does not add much weight or size to the phone like some of the external charging batteries do.
Gail H.

Most Helpful Customer Reviews

558 of 568 people found the following review helpful By D. Bowman on April 3, 2011
Verified Purchase
Length: 4:24 Mins
I love this case. It was exactly what I was looking for. I do a lot of travel and I always kill the battery every day.
This fixes all of that.
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185 of 187 people found the following review helpful By Jim on February 23, 2011
Verified Purchase
This is easily one of the best accessories I've found for my iPhone in the last three years. The case itself is very comfortable in the hand. It doesn't add much weight or bulk to the phone at all. It has soft edges around the case so it's nice and comfortable when held against your ear. (Some other cases I have used had extremely sharp edges around the face of the phone.)

I love that the device will actually recharge my phone's battery or the phone and device batteries can be used together. I typically use the power button on the back to shut off the battery extender until my phone drops to a critical level and then activate the battery pack. When recharging, only one cable is needed instead of two separate cables.

The battery pack uses a Micro USB port to recharge. With the phone in the battery pack you can also recharge the phone with the same cable. Not only is the Micro USB port more common (almost all modern cell phones, such as Blackberry and Android, use this port). Most of the Micro USB cables I have found are considerably more robust than the iPod sync cables and they are cheaper to replace.

I mainly bought this battery pack for traveling. Now, I don't have to worry about my battery going dead because I spent too much time listening to music while at the airport. If I want to watch a video, I can now do so without concern that the battery will run out before the video ends. It's GREAT!

This device should shut the iPhone detractors up in a hurry when they whine about not being able to change batteries or swap the battery out for one with a longer charge.

I had to come back and add something else about this battery pack that I just discovered by accident. You can actually sync the phone, with the battery attached, using the included micro USB cable.
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105 of 111 people found the following review helpful By E. Triebe on October 30, 2011
Verified Purchase
I won't repeat what everyone has said about how well it extends the battery, but I will comment on one thing that people have left out: how this case affects the camera.

When taking a picture with the flash, there is a distinct white "smoke" that covers most of your picture that is caused by the case being too close to the flash. Take the case off and take the exact same picture and this smoke is gone. This is extremely disappointing because the quality of the camera was one of the main reasons that I purchased the phone. I'm still not sure if I'll be returning it yet but I'm definitely considering it. Battery life is important to me but it isn't worth diminishing a core strength of the product because of it.

At first I didn't realize it because I pretty much instantly put the case on the phone, but when comparing pictures to my girlfriend's iPhone I noticed hers were distinctly better.

I'm not really sure if any other cases out there are any better because it seems like they are all pretty close to the same shape/design as the BOOST case. I'm pretty disappointed and might just be switching back to a regular case that isn't going to make all my photos look bad.
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64 of 70 people found the following review helpful By Gail H. on March 7, 2011
Verified Purchase
I recently purchased a Verizon iPhone 4. I love the phone but was rather disappointed in the battery life. I went searching for a solution to this issue and after much research I came across this charging case. After reading the positive reviews I took the plunge. This is the perfect solution to my problem. The charging case doubles my battery life. It is lightweight, sturdy, well made and attractive. I like the fact that the case does not add much weight or size to the phone like some of the external charging batteries do. I don't know how an iPhone user can do without one. I do not feel the need to search any further for a more effective solution since this one is perfect for me.
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16 of 16 people found the following review helpful By ijcast on October 26, 2011
Verified Purchase
The Boost Case combines damage protection and battery back-up in a case that fits very nicely around the iPhone 4, or 4S. I have an Iphone 4S, and I am mostly satisfied with this product. But there are few things consumers should know before purchasing.

Amount of Charge:
There are two ways to use the Boost Case from my own experience. First method (this is the one that the manufacturer suggests) is to keep the Boost Case charging the Iphone constantly, until the Boost Case's battery runs out. In this manner, the Boost Case will keep the Iphone 4S at 100% charge for quite a while - often most of the day (about 7-8hrs). Only with evening approaching will I see that the Boost Case battery is drained (at which point the Iphone is relying on its own battery). So in that sense, yes, it does seem to double the life of the battery. The second way to use the Boost Case is to let the Iphone battery drain first (keeping the charger "off"). In this manner, I usually let the Iphone drain to about 20%, then I turn on the Boost Case's charger to fill it back up. Doing this fills the Iphone back to about 75%. Doing the math, that is roughly a 55% additional charge contained in the Boost Case. I've heard other Boost Case owners getting more charge, but those are the numbers in my case. (I will note, I am a modest Iphone user, I surf the web during lunch, and check email throughout the day.)

Act of Charging:
Instead of using the standard 30-pin connector, the Boost Case uses an included cable to recharge and connect to a PC/Mac. One end of the cable is a micro-USB connector that goes into the Boost Case itself, while the other end is a standard USB connector to connect to a computer.
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