Been using this product for a week. Had bought it for my Redmi Note 5Pro which has a battery capacity of 4000 mAh.
Now, things to keep in mind: 1. Most important- Capacity of the battery is 20,000 mAh but actual power is 13000 mAh (As claimed by Mi on the website) due to conversion loss. So technically it should charge my Phone for 3 full cycles, so does it? The answer is YES, which is a big thumbs up from my side. 2. can simultaneously charge 2 devices (just did a casual test, worked fine) 3. Throughout the week I tested it for my phone only using a single port which triggered Qualcomm 3.0 fast charge & it heated my device (Not very much but acceptable). I have attached a screenshot of the quick charging icon visible when phone is connected to a single port on the powerbank 4. Bcoz of the bulky size, putting an external cover for gripping is advisable. I purchased a silicon cover separately for it. 5. Has overcharge & short-circuit protection (Company claimed). 6. Not pocket friendly.
Overall i am happy with the purchase considering the price to performance ratio. Would definitely recommend to anyone who travel or require an external backup source.
This is maybe my 10th personal power bank. I have used Anker, Adata, Plantronics, Ambrane, Intex, generic ones, iWalk and more. Most of them promise too much but by keeping the price tag low, you end up losing on genuine quality and assured performance. With the Mi Power Bank, you get what is promised. This is one difference that I noticed. The power bank was mostly charged when I needed it to be charged and after having used it for 30 days, I can safely say it has a great capacity of holding the charge.
What phones & devices does this charge for me?
S8 Plus, iPhone 8, Fitbit Blaze (once a week) and my Amazon Fire TV when I don't have a power plug to plug it.
Does it fast charge?
Yes, it fast charges the S8 Plus. This means it saves me the time and hassle of connecting with the wall charger. Yes, the wall charger is still little faster as wall charger uses 2.1 A charging and this uses 2.0 A charging (I think) but this is a major positive.
Can it be used to charge two devices?
The good news is that the 3-4 times I have used this with both devices, I have not seen any reduction in performance quality. It keeps the power going and seems to be able to support it. If its fast charging in one, then it is giving consistent charge to the other slot too.
How often do I Charge it?
Maybe once a week. Not more than a maximum of twice a week.
Can it charge a macbook?
I tried to use this and in one hour it only adds 12% to my Macbook Pro Touchbar 13" so it is not worth it.
How long does it last?
Lets say it will charge both my phones maybe 7-8 times in total before giving up.
Who should get this?
IF you have one phone and it dies easily, you should get this as this will keep it charged. I suggest you charge only till 85% and then disconnect if you have two phones, this is a good device
How long does it take to charge? I have never measured it. But with the accompanied cable and my Samsung Fast Charger Adapter, it charges in 6 hours to 100%. This is not bad for me as I plug it in overnight.
Drawback? Mi is a Chinese company and I feel a little bad for using it. But the product is good if you forgive the political inferences. Thanks.
Product is great. Bought it in June and still using without any problems in October. So far so good. Went on trekking trips with fully charged and it kept alive 3 phones for two days. Keeping in mind not all phones were charged to 100% using power bank. But surely will fill 100% ie 3000-4000 mAh phones 3 times at least. Durable product, no heating issues. White colour does get dirty easily though.