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Product Review: Casessary Samsung Galaxy S8 Battery Case


I am a smartphone junkie, I am on my phone way too much. There I said it, with that out of the way lets talk about something that has always been an issue for power smartphone users, battery life. I use my smartphone for business and personal use, it gets used for everything, I would rather use my phone than a computer, so I need a way to keep the phone alive for when I need it. The Casessary Samsung Galaxy S8 Battery Case might just be what I have always been looking for.

For a few years now, I have been caring around mobile chargers that I can use on the go to keep my phone charged. I travel a lot, so these have always been very handy but sometimes cumbersome to hold while using the phone they were charging. I have looked at battery cases in the past but have always shied away because of the bulk, well the Casessary Samsung Galaxy S8 Battery Case is not as bulky as I have seen so I figured why not give it a try. As mentioned the Casessary Samsung Galaxy S8 Battery Case is not this big bulky behemoth of a case although it does at some size and weight to the phone it still fits comfortable in my pocket. My only complaint about its size would be when trying to access the fingerprint sensor on the back of my Galaxy S8, because of the thickness of the back of the case it sometimes feels just a little bit out of reach. However, being lefthanded and because of Samsung’s decision to put the fingerprint sensor next to the camera vs below it the fingerprint sensor on my Galaxy S8 has always been uncomfortable to use. So I do not ding Casessary for this too much.

The Casessary Samsung Galaxy S8 Battery Case is chuck full of features including:Cass 2.jpg

  • A 4500mAh Li-Polymer Battery
  • Support for Qualcomm Quick Charge 3.0 so charging is super-fast
  • Full 360° protection
  • Priority Pass-Through Charging so your phone charges first when plugged in to a charger
  • Dynamic Power Management with sophisticated protective logic+ temperature sensor, prevents your device from over-heating / over-charging

Not a bad feature set for a battery built into a phone case.

In my testing with the Casessary Samsung Galaxy S8 Battery Case I have been able to get two full days of heavy use without needed to plug my phone in and for me this is excellent. Since the Android Oreo update for the Samsung Galaxy S8 my battery life has been terrible, and I have not been able to make it through one day. Now about that Power Management and temperature sensor mentioned above, I had a run in with this the other day as I had the case charging my phone which was in my pocket and a laid down with my son to get him to take a nap. Well like usually happens in this case I fell asleep to, and I am happy to say that although my phone did heat up a little bit the Casessary Samsung Galaxy S8 Battery Case had stopped charging and my phone was unharmed. With Samsung’s history of exploding phones this could have ended badly.

My only real complaint with the Casessary Samsung Galaxy S8 Battery Case is the location of its power button. I find myself accidently turning it on all the time, I have done it with my phone in my pocket and my hand, I just can’t help but press that little button. I think this could have been better designed but ultimately its not a big draw back because the worst thing your going to do is charge your phone which is the point of the Casessary Samsung Galaxy S8 Battery Case anyways.

Casessary does not just support the Samsung Galaxy S8 so if you are looking for a way to get some additional juice out of your mobile device give them a try.


Mike View All

I am passionate about the IoT and connected devices. Using connectivity to automate our lives will empower civilization to achieve greatness.

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