[Samsung Galaxy S7 Edge Accessories] skezza:
Got a 'SAVFY' charging case for just £11.38 shipped off eBay. The battery of the S7 Edge seems excellent so far, but if, like me, you go on many football away days etc, you'll easily get through it in a day. Anyway, it looks as though SAVFY is just a knock-off Chinese brand, but I've used knock-off Chinese batteries before with good results (with one exception) and for less than £12 it seems a bargain. Here's an Amazon listing for the case: https://www.amazon.com/Charger-SAVFY-Portable-External-Rechargeable/dp/B01EN0JVAW

Mixed reception online it seems. One fella said the battery died after charging to just 30% (to me that sounds like a duff one), while others complained about the colours and tactility of the case. It claims to be 5200mAH but not sure how I'd really test that.

Quite a few of the negative comments are to do with the manufacturing materials, as such I would really advise anyone who does buy this case.....

BUY THE BLACK ONE. If you have a white phone, buy the black one, if you have a black phone, buy the black one, if you have a green with yellow spots phone, buy the black one. The reason why? The non-black colours are 'glossy', a bit like enamel or a hard plastic texture. One of the photos in the link above shows the Rose Gold one and you can see the hard plastic reflecting in the light. The plastic is also hard and feels brittle and will probably break if dropped.

The black one is different. It's still quite hard, but the outside material is like a rubbery texture. A bit like you get in some cars on the dash board. I doubt it'll be much better for absorbing impact, but I believe it will reduce the likelihood of bits of dust scratching the back and outer edges of your phone.

A few observations of my own:

- I personally am not all that impressed by the 'protective' level of this case. Large parts of the edge of the phone are completely exposed, so anything in your pocket could . I've done a few little (completely unscientific) tests using a table and the phone and I reckon if the phone hits the ground face down, you've got maybe 2-3mm of flex from the corners of the device, which is pretty much nothing. If it hits on the top you've got a reasonable 3-4mm and the bottom I'd say you're safe as it's protected by the thickest part of the case. If it hits the floor on an edge however, the amount of space between the phone and the floor becomes precariously low in my opinion. If you're lucky, it'll hit the phone on the back, bottom, or corners. Anything else could be curtains for this beautiful device.

- Not a negative, but it does add a fair bit of weight onto your phone (which tied into the point above...). It takes your phone from being a lightweight comfortable device to being, hmmmm, nearly the weight of a tablet I'd say. The case on its own weighs more than the entire phone. Fine in your pocket, but it does get a bit tedious holding it.

- No Micro-USB Cable was included. I know this sounds picky, but even the cheapest of cheap Chinese batteries i've bought in the past have come with a 5cm cheap cable to charge with. Come on?

Not had chance to actually try the case. It came charged up to the 4th light, so I will probably charge it up full and see if I can try it for a day. Don't really know how to test a 5200mAh battery, but my thinking is that it should be able to charge a S7 Edge from 0-100% then run it for a while too? Is that a terribly unscientific experiment? You betya.....