Order before 6pm for same day despatch *
order by
6pm for
today *
Return to Home Page
Sorry, but Mugen Samsung Galaxy S4 Extended Battery (5500mAh) - Black has been discontinued and is no longer available to order. For your convenience we've selected some alternative items that we think you may be interested in.

Mugen Samsung Galaxy S4 Extended Battery (5500mAh) - Black

Manufacturer Logo

Product Reference: 39658

Extend the life of your Samsung Galaxy S4 with this 5500mAh battery and battery door extension. In black.

  • "Useful Power"
  • "Worthwhile replacement battery"

Most Useful Customer Reviews

Mike Williams
Samsung Galaxy S4
8th March 2016
Useful Power
The old Galaxy S4 battery was beginning to show its age and after some research for a replacement I came across this item. My phone gets a lot of outdoor use for mapping and GPS work through Geocaching etc and this often is needed all day. The old battery could no longer support this useage - enter the Mugen battery. I've had it about three weeks and it is now giving me up to three days power (depending on useage) between charges. A day's Geocaching is nothing for this battery and I still have more than a days charge left. 30% power left will still see me through the day. I would certainly recommend this battery pack and I have found the increased size and weight of the phone no problem at all. In fact it is a small price to pay for the benefit it has given me. I was also able to buy the unit at a very attractive price - thank you for that and for the good service all round.

Gym Bunny
Samsung Galaxy S4
15th January 2016
Worthwhile replacement battery
I bought this extended battery to replace my original S4 battery which was approaching 2 years old and perhaps suffering some decline in capacity since new. Portable battery packs are all very well but using my phone with an OTG cable in the gym means I am dependant on just the battery. With my old battery I could only manage about 90 minutes from 100% to below 10% (screen on constantly running an app, connected through OTG, streaming radio through WiFi to Bluetooth earbuds & receiving heart rate data from a BTLE chest belt to a different app). Longer workouts had to be tech free. With this battery in place I no longer need to make sure I am bang on 100% before I start a workout. I am so confident in the capacity of this battery that I started this mornings workout (90 minutes as above) at a frankly reckless 82% battery. Having finished & arrived at work I am still at 59% The larger back supplied to accommodate the battery does make the phone about 2.5 times as thick and noticeably heavier but I still find it comfortable to hold.

Read 9 customer reviews | Write a review

Why Buy?

  • Extended battery adds 5500mAh to your Galaxy S4
  • Compatible Battery Door
  • Quality assured
  • Guaranteed for one year


Extended battery adds 5500mAh to your Galaxy S4

The original Samsung Galaxy S4 battery is 2600mAh, this Mugen battery is 5500mAh. This more then doubles the original battery life giving you double the time for watching videos and listening to music. 

Mugen Samsung Galaxy S4 Extended Battery (5500mAh) - Black

Compatible Battery Door

The extended 5500mAh battery is an absolute powerhouse however the increased battery power means that the battery size will increase. Mugen therefore includes a compatible battery door that will house the extend battery perfectly, whist keeping bulk to a minimal. 

Quality assured 

All Mugen Power batteries undergo vigorous QA procedure, resulting in Mugen Power achieving the lowest return rate in the industry. All Mugen Power batteries are CE approved.

Guaranteed for one year

The cells used for these Mugen batteries are of such high quality, they are guaranteed for one year. Something other manufacturers don't do. 



  • Cell Type Li-ION
  • Voltage 3.8v
  • Capacity (mAh) 5500)

Key Details

  • Colour: Black
  • Part No: HLI-I9500XL

Questions and answers:
Why Mobile Fun? Payment Options