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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.
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.
much tinner than expected
my galaxy relay s4 extended was much ticker than this one. i guess i would prefer bigger one. on the plus side it fits well in belt pouch biggest size avaiable freely on ebay.
as for battery, holds about 2 day charge of moderate use. as exptected. coulld potentialy squeze third day as about 30% im using now, but i prefer to stay on a safe side.
no any abnormal heating observed. didnt test nfc as never needed to so far.
mugen quality. mugen power.
mobilefun price ;) positivly surprised here. not only they are rare now, but even got in a good price. shame i didnt know about this site before when i got my battery off directly from mugen.
battery cover fits well, alto in one place it can stil out a bit, could be i didnt close it properly. texture is fine alto i prefered the relay ones, as this one is more sparkly and little more slippery. still better grip than original one which under certain conditions gonna be real pain.
I really love this item and it keeps my battery going forever! I would recommend this item to anyone who is looking for a battery to last!
I'm very happy about service and very good discribstion about item
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