I now own 2, 3rd on its way, I'm kitting out the family using the discount code here note it is one per customer so Amazon Household gets you >1.
They are an EDC to use with a mobile where you merge one short cable with one powerbank with one wall charger.
As shown here.
It ends up about 20% smaller and lighter so more for an EDC. So if you are carrying all those 3 items then it replaces. This is good for say a 2-3 day weekend city visit when you're using your mobile a lot to navigate and you're living out of a backpack for half the time between hotel checkin/checkout and the flights.
Good for less geeky people who would simply forget or not understand that if you drained a battery they'd to plug into recharge, this removes that need to remember, if you hand them a Fusion then "its all you need" with 1 cable.
It is a compromise of not that good at any one thing.
As a Powercore it is huge, heavy. It is same weight as the Powercore 10000 but larger and half the mah, so if you were not need more than 10000mah you'd be smaller to carry just a bigger battery. Days where you need just a little extra power, the Powercore+ Mini would be a lot smaller, days where you only needed 5000mah, the Slim 5000 is smaller, days which you need 10000mah the Powercore 10000mah is smaller, so its really for multiple days where you'd drain battery and need to recharge so you need both functions.
As a Powerport alternative it is larger and heavier than say the Powerport2 which outputs 24W vs this 10.5W. The claim of 2.1A is valid, I have metered it. If I connect a high power drain (say a drained Powercore 10000) then I gives 2.1A like a Powerport2 but if I add a 2nd device then the Watts is not split evenly, one ended up with 1.6A the other 0.6A and the voltage drops from 5.1V to about 4.7V as it tries to eek out 10.5W over two ports. That that means this is perfectly powerful enough for one high power device or two medium power devices such as a mobile and a BT headphones, but not for two high performance devices like say a mobile and a tablet.
So if you were not in an EDC mode but with say multiple devices (say a mobile and a tablet) then it would more struggle to charge quickly both devices.
When I use mine:
- its in my EDC bag to go to work. 5000mah is enough but if (rare) a bad app on my mobile fully drained the phone I need a wall charger too so this merges smaller those items combined, 10.5W is plenty enough for just a mobile.
- if I'm on a mid-sized business trip I'd take my Nexus 7 tablet with its keyboard, say Moto G4 Play these collectively will last most of a day so 5000mah is enough and I just plug them all in at night, this then is a very compact laptop+mobile+charger system.
- family members "its all you need" who only have mobiles.
When I don't use mine:
- heavier business trips when carrying my Pixel C its huge battery calls for me to carry the Powercore 10000 + Powerport4 to charge tablet, mobile, Android Wear, BT headphones.
- home. I use a 6 port device.