

The Galaxy S4 normally lasts about a full work day, but with this new extended Galaxy S4 battery you’ll be able to go two between charges – perfect if you sometimes forget to charge your phone or you’re away from a power outlet for extended periods.
If we have a look at tests performed by GSMArena using the standard battery, you can see the benefits of the Mugen extended battery easily:
Stock | Mugen | |
Talk time | 18+ hours | 38+ hours |
Web browsing | 7+ hours | 15+ hours |
Video playback | 12+ hours | 26+ hours |
Even the Motorola Razr Maxx only offered 21 hours of talk time – 38 hours with the extended battery on the Galaxy S4 is absolutely insane, and the web browsing and video playback results are impressive too. No matter what you’re doing on the Galaxy S4, you’ll find you can do it a lot longer with one of these Mugen extended batteries.
Pro tip: You could even keep your existing rear cover and battery in order to get triple the battery life with a little further bulk.
These Mugen Extended Batteries are currently on pre-order. For the latest pricing and availability information, check out the product pages below!
Thanks for reading. If you have questions about the Mugen or any one of our Samsung Galaxy S4 batteries, feel free to let us know in the comments below!