I paid more than £30 though, dammit.
Third Rail System Slim Case and Smart Battery for iPhone 4S/4
Most Helpful Reviews
54319I love this case/battery as I am sick and tired of running out of power towards the end of the day. Having the battery separate to the case until required means I dont have to wield it about all the time, and just add it when I'm running low.
I paid more than £30 though, dammit.
Dwayne Fisher Clapham 10th September 2011
54321Got so fed up of charging my iPhone after not much use that I took the plunge on this. Was skeptical on the price as it was less than a battery and case put together, but it has solved my problem. Ok, so bugs on iPhones can be fixed but with the smart battery I can now juice up my sat nav and bluetooth headset also so money well spent anyway. First rate delivery time from mobilefun too.
Chris King Towcester 7th September 2011
54322When I am working late in the Ant Lab, I can easily plug in some extra power. When I don't need it, I can just take the extra battery off without problem. The case is cute, but would look better with more pictures of puppies.
Antonia Forster Bristol 7th August 2011
- Combination of Slim Case and Smart Battery gives you the flexibility to choose when you want extra power
- Slim Case provides full protection to the back and sides of your iPhone 4S / 4
- Hot-swappable Smart Battery can keep your phone powered for days
- Made for iPhone license ensures compatibility
Combination of Slim Case and Smart Battery gives you the flexibility to choose when you want extra power
Your daily power usage will vary, so you should have a charging solution that can adapt to this. The Third Rail System gives you the power to choose when and where to add additional power through a Smart Battery to your protective Slim Case. When you know you'll get through the day without the Smart Battery, simply remove it for a more svelte and pocketable profile.
Slim Case provides full protection to the back and sides of your iPhone 4S / 4
The durable hard-shell protection of the Slim Case is combined with a soft-touch coating to cover your iPhone 4S / 4 against scratches, scrapes and minor impacts. It also features cut-outs for all the buttons, headphone socket and camera, so you can use the full functionality of your phone without taking it out of the case. The Slim Case has a micro USB port for charging your phone while in the case.
Hot-swappable Smart Battery can keep your phone powered for days
Unlike with traditional batteries where you have to turn off your phone to change them, the 1250mAh Smart Battery can be swapped at will without missing a beat. If you've got a second or third Smart Battery, you can keep changing them round to keep your phone untethered and fully charged for days or even weeks on end. Smart Batteries are also compatible with all Third Rail cases, so you don't need to worry about getting a whole new system when you upgrade - just get a new case and you'll be good to go. The Smart Battery also has a USB output so you can use it to charge other devices when your phone is already full.
Made for iPhone license ensures compatibility
The Third Rail System has the Apple Made for iPhone certification, which means it is built to the highest quality standards and guaranteed to be compatible with your iPhone 4S / 4 regardless of what software version it is running.
- Slim Case dimensions: 126 x 61.7 x 11.6mm
- Smart Battery dimensions: 83.6 x 46.5 x 6.9mm
- Battery capacity: 1250mAh
What's in the box?
- Slim Case for iPhone 4S / 4
- Smart Battery
- Micro USB cable
- USB adapter
- User manual
|Mobile Fun ID||31276|
Questions & Answers
Delivery & Returns
All product stock messages are up to date and as accurate as possible, with delivery times quoted at the checkout remaining accurate also.
These estimated time of arrival dates are constantly looked at and refreshed to ensure that you can purchase with confidence.
|Method||Estimated Delivery Time||Price|
|Super Saver Delivery (Eligible products only)||3 to 5 working days||£1.35|
|Standard Delivery||3 to 5 working days||£3.95|
|DHL Next Day Parcel||Next working day if ordered before 6pm Monday to Thursday||£6.99|
|DHL Global Mail||4 to 10 working days||£3.50|
|DHL International Air Express||1 to 3 working days||From £12.95|
- Fast, same-day despatch when you order by 6pm on weekdays
- Free no-quibble 30 day return policy
- One flat delivery price for your order, no matter how many items you buy.
- For partially in-stock orders you pay for delivery only once. We’ll ship what’s in stock now and the rest later at no extra charge.
*Please note orders for batteries and power banks may be subject to delays due to dangerous goods shipping requirements.
**Please note next day delivery times may be affected during National Bank Holidays.
***Please note DPD Next Working Day will only delivery the next day if your order was placed before 6pm Monday to Thursday.You can view all of our delivery options, covering UK and international shipping by visiting our Delivery Information page.
In order to deliver your orders safely, a number of our partners have introduced a minimal contact or contactless delivery service. By doing so both our customers and our delivery partners are kept safe. Click here to see which couriers are able to offer contactless delivery.
View the countries that we ship to here: International shipping
Buy with confidence. Our 30 Day Money Back Guarantee means you can return your item in exchange for a full refund or exchange.
We have extended our returns period for the Christmas season. Items purchased from Mobile Fun and dispatched during the period from November 1 2020, to December 31, 2020, inclusive may be returned at any time before midnight on January 31 2021.
For more information about Shipping, Handling and Returns, please see our Terms & Conditions.