Power Bank 4i 20000mAh 33W Super Fast Charging PD |Smart 12 Layer Protection|Type C Input & Output|Triple Output Ports|Supports Android,Apple, Tablets, Earbuds,Watch(MI Powerbank),Blue

Nice powerbank does the job also support fast charging on Samsung phones. But with time it's charging quality or something degrade cause at initial it work well charge the battery even while using phone but after some months it can't charge the battery while using. The charging percentage goes slowly up while using or stay at same percentage on which you plug the Powerbank. The top material is good for price but not as strong as metal body provided by Xiaomi in 10000mah models they are so strong. And it is a bulky power bank feels heavy weights nearly two smartphones. The c to c cable is decent but not as good as braided ones but support fast charging. And you can also use it for charging powerbank. Only major flaw is if there was two type C ports it would be good. But still serves the purpose and done the job well then expected. One thing more it heats while getting charge and also gets the charger a lot so use a GaN charger or avoid over charging though it has protection but prevention is better than cure.

Excellent power bank with a large battery capacity and fast 33W charging. It charges my devices quickly, holds power well, and feels sturdy and well-built. Great value for the price. Highly recommended!

Capacity: 20K is enough for me. I charged my 4500maH phone a total of 2 times and it dropped 2 points to 2 leds lights blinking Charging the power bank takes expected amount of time: I did not measure the time to full charge - but i did charge from 1 led light to fully charged and it took ~5 hours to do so (67W xiaomi charger + 6A xiaomi cable) It gets slightly warm when charging on the ports side, almost no heat when using the powebank itself. The body of the powerbank scratches easily - just sliding it on a desk if there is dust there are will be visible scratches marks (image with xiaomi logo), as expected on a plastic body Its heavy but manageable - which is expected on a 20000mAh PB Lookwise its good and looks minimal I dropped it once and it survived and works just fine - the corner it fell has slight dent thats it (image with the ports). So build wise its good Regarding Fast Charging On the xiaomi site they say it can charge Dual ports as 5V;3A that is 15W of fast charging for dual port usage But every time i plug a second device - the powerbank automatically restarts iself and starts charging in normal mode (as per the phone) - there is no indication of fast charging on the phone. So can't tell if its charging with 15W or not. Maybe phones do not recognize 15W as fast charging, not sure I tried it with 3 Xiaomi phones with different fast charging supports (67W, 33W and 18W fast charging) and with 3A, 6A and included cable in all different port combinations. All of them were Xiaomi official products The result is the same plugging the second device in the power bank restarts in slow charging mode Another annoying thing is - this same behavior repeats if u plug in a cable with E-marker chip. It detects cable is plugged in the port and immediately drops the fast charging. (In the video i have used a 6A Xiaomi cable , the phone supports 67W - as u can see it resets and starts charging in normal mode just by pluggin in the cable itself). This does not happen with normal cables - but plugging in another device will drop the fast charging. And simply unplugging doesn't work, I have to reset it again by pressing the button on the power bank so it starts fast charging again I observed charging speed and can't tell conclusively if its just 10W normal charging or 15W charging. But charging speed is significantly slower if two or more devices are connected compared to if single device is connected. But its not super slow, its about the same speed as a standard 10W charger. Included cable is type C to C. The Type-C port on the powerbank charges the phone slightly faster, compared to the type A ports. The Low current mode implementation is based on current draw - so u can't slow charge your phone even if u wanted. Becuase anything that draws high enough current is plugged in, it exits from its lower power state into normal state I tried with cable with no data lines same result - it exits low current mode. Low current mode does work with earphones and headphones but u plug in any other device that draws big current like smartphones it will exit its low current state Rest every thing is upto specs. I brought it when its price was high Rs 2199 - its usual price at this time is 1999 (May 2026) For me the power bank is more than enough - the non dual fast charging doesn't bother me. But there could be more clarification on fast charging and low power mode behavior, which are the supported chargers that can charge it at max speed. Overall the powerbank is good enough for almost every use case.

It is awesome and carries a lot of charge. I have taken this for 3 day camping and everything! But it not very compact like it is the size of a phone and super heavy especially if you're planning to travel light.

This is indeed the best powerbank, I had ever used Battery backup is great as it can 5000 mAh phone 3 times full, considering the environment condition suitable not too hot or cold and charges also at 28~30 watts and the outuput is also same You can charge macbook with this also as I did charge. It definitely feels bulky but the size and durability is fine It is also flight safe as of now One issue I face you cannot use it while charging the powerbank because it has one Type C port. In the box you get a Type C to Type C cable and powerbank

I've been using this Xiaomi 20,000mAh Power Bank for the last 2 years, and it's still performing really well. The battery backup is excellent and easily charges my phone multiple times on a single charge. The build quality feels sturdy, and it has been reliable throughout daily use. Recently, I've been using it with my OnePlus Nord 5, and it charges the phone smoothly without any issues. Even after two years of regular use, I haven't noticed any major drop in battery performance.

Xiaomi might have lost their edge in phone market but in the power bank market they are still the kings with fast charging super fast PD charging you can fast charge any PD supported devices at 33W ( if supported ) while also charging the powerbank ( 2 way charging) It s bit heavy I have not weighed it but I guess its around 750 - 800gms build is plastic so not too rugged not to fragile . easy to use with plug and play , compared to your phone if you put one phone on another its that thick so you can call it compact size as its 20000mah which is generally 3-4 times more battery than a average phone released before 2026

Power bank is very good , nice backup , durability not so good because of plastic build , connectivity is good , charging speed is good as per claim , this power bank with safety features , lightweight , value for money . But but show me change with build quality with a metal body . I suggest who purchase this Power Bank , charge with a minimum 25 watt not more then 33 watt charger.