Xiaomi Power Bank 4i 20000mAh 33W Super Fast Charging PD | Power Delivery | QC 3.0|Type C Input & Output |Triple Output Ports|Classic Black|Supports Android,Apple, Tablets, Earbuds, Watches etc (MI)
Safety and product resources Regulatory Information To know the product(s) that require Bureau of Indian Standards (BIS) Marking, please refer to "Mandatory certifications in India" or search using "Know your standards"
Package Dimensions
18.9 x 9.7 x 3.2 cm; 440 g
Batteries
4 Lithium Ion batteries required. (included)
Item model number
PB2030IN
Special features
Triple Port Charging, Short Circuit Protection, 33W Fast Charging, Compatible with All Smartphones
Triple Port Charging, Short Circuit Protection, 33W Fast Charging, Compatible with All Smartphones
13 reviews for Xiaomi Power Bank 4i 20000mAh 33W Super Fast Charging PD | Power Delivery | QC 3.0|Type C Input & Output |Triple Output Ports|Classic Black|Supports Android,Apple, Tablets, Earbuds, Watches etc (MI)
4.4out of 5
★★★★★
★★★★★
7
★★★★★
4
★★★★★
2
★★★★★
0
★★★★★
0
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★★★★★
Amazon Customer (verified owner)–
Detailed Review - Must Read
When I bought this Powerbank, I didn't found a detailed review regarding this but now as I have used and tested this Powerbank (20000 mAh variant) for 7 days, so I think I'm eligible to write a detailed review for this. Mainly I will write this review based on 4 points, build quality, charging time of powerbank, charging speed and battery backup. So let's start.
1. Build Quality : The build quality of this Powerbank feels quite solid & nice. Its sandstone design texture and round edges makes its grip solid in hands & quite comfortable to hold. Before this I used to have Redmi Powerbank (20000 mAh) which in comparison to this Mi Powerbank feels little ugly in terms of design and uncomfortable to hold. Mi Powerbank feels less wider, thinner & more premium as compared to the previous one.
2. Charging Time of Powerbank : The day I received this Powerbank, its LED indicators showed 2 LEDs blinking which means it had battery level between 25% to 50%. So before using it for the first time, I charged it fully using my standard 10W charger.
One should also note that charging time of Powerbank along with the adapter also depends on what type of cable you are using. Using an old type C cable will take more time to charge it, as current carrying capacity of the cable decreases with time due to frequent usage. Although my 10W adapter is quite old but I have a new type C cable which supports fast charging, so I charged my powerbank with this setup and it took around 8 hours to charge it fully. So you can expect to charge it from 0 to 100% in around 11-12 hours using a 10W charger. Whereas if you use a fast charger like 33 Watt, 65 Watt etc. then ofcourse the powerbank will charge at a faster rate but it will also affect the efficiency and thermals of the powerbank in a negative way in the long run, so keep that in mind.
3. Charging Speed Test : I tested the charging speed provided by this powerbank using 3 different type C cables to charge my 4000 mAh mobile device. Each time I charged my device to 80% using different cables (in second case I forgot to check & it got charged up to 90%) and noted the overall time it took to charge the device. All the results are attached in order as screenshots for reference.
In first case, I charged it with my 2 yr old type C cable which although supports fast charging but the results were not impressive. (Time 1h 43 min Pic)
In second case, I charged it with a new type C cable which came with my tws earbuds but it does not supports fast charging and the results were relatively better as compared to the first case. (Time 1h 58min Pic)
In third case, I charged it with the type C cable which comes inside the box of this powerbank and supports fast charging, and in this case I got the most impressive results. The device got charged to 50% in just 30 min, and 80% in 1h 8min. (Time 1h 8min Pic)
So, it shows that the cable also plays a very important role in fast charging your device which many people ignore.
4. Battery Backup : Other than the above mentioned test results I charged my mobile 3 more times but didn't noted the charging time. So all in all, till now I have charged my device to a total of 406% in 6 different rounds (80% + 94% + 80% + 44% + 82% + 31%) and still 3 LED lights of powerbank are blinking which literally amazed me considering the negative reviews I read about its battery backup before buying it.
So, overall I would say you can buy this powerbank if it suits your requirements and budget. Also if you buy this powerbank then I would suggest you to charge it fully before using it for the first time and test other things during that 7 days replacement period, so if you find any issues with it, you would be able to replace it. I used AccuBattery app to record the battery percentage & time it took to charge my phone.
P.S : Will update the review in future if felt the need to do it.
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★★★★★
Sayani (verified owner)–
Good product
Good product for daily uses, can charge laptop too but very slow charge. Durable, easy to carry , light to show juice left in it, size not that compact, elegant design
Helpful(0)Unhelpful(0)You have already voted this
★★★★★
Raiderrrrr (verified owner)–
Capacity
I have upgraded to 4i after using 3i for 2 years .. i am satisfied with the capacity and charging speed . Can charge my s20fe 4 full times and have a lil juice left for another 10-15% .
The only con i would say is the build .. we get a plastic build compared to metal on older 3i .. and i think mi could have added an led/oled display to show percentage left instead of old style 4 LEDs .
Overall its a very good product with minimal cons . So u can surely go for it
Helpful(0)Unhelpful(0)You have already voted this
★★★★★
Amazon Customer (verified owner)–
Useful!
Quality is good, idk sometimes it stops working for few minutes and becomes normal too. Takes more time to charge (for me 8 and half hours which is quite more compared to others). Easy to carry. Power level is Good.
Helpful(0)Unhelpful(0)You have already voted this
★★★★★
Amazon Customer (verified owner)–
Compact and powerful!
I’ve been using this power bank for a few weeks now, and it’s amazing! It’s lightweight, easy to carry, and charges my phone from 0 to 100% in about an hour. The build quality is solid, and the fast charging works perfectly.
Helpful(0)Unhelpful(0)You have already voted this
★★★★★
Gayathri (verified owner)–
An excellent beast of a powerbank!
There are many powerbanks from multiple companies out there that will provide you with more features or they could be cheaper , and you would be tempted to buy those instead.
But the fact is there's no need. At the end of a day we just use our powerbanks to just charge our devices and nothing more, and this one is efficient.
This powerbanks battery is phenomenal, when I got the product I first charged it to full ,
and from then I have been using it daily to charge my 5000mah phone once a day.
Its been 13 days now and two LEDs are still glowing, which means it's at 50%juice left. Even if remaining charge is about 30% or something its still mindblowing capacity.
And it has a 33W input and output via type c port, and it's the best in the range.
I can charge the powerbank quickly in about 8-9 hours from 0 to 100 and it will last me about two weeks in my usage.
But just a con is that its very smooth so it's slippery , you might want to handle it carefully or buy a case protection for it.
Helpful(0)Unhelpful(0)You have already voted this
★★★★★
Xiaomi Power Bank 4i 20000mAh 33W Super Fast Charging (verified owner)–
Most praiseworthy fast charging powerbank
Superfastcharging with the cable provided iw the highlight .
Can easily use for 2-3 days in full charge.
Cost effective.
Nice design and color exactly as shown.
Doesnt heat too much.
Adequate cable length.
Portable and durable.
Reviewing after 1 month of usage.
Recommended 👍.
Helpful(0)Unhelpful(0)You have already voted this
★★★★★
Gayathri (verified owner)–
Awesome power bank
Super fast charges the device. Good built quality.
Helpful(0)Unhelpful(0)You have already voted this
★★★★★
Amazon Customer (verified owner)–
Awesome power bank
Super fast charges the device. Good built quality.
Helpful(0)Unhelpful(0)You have already voted this
★★★★★
Gayathri (verified owner)–
Excellent
Good power bank. Good battery backup.Been using for the last 3 years no issues. Worth for the price
Helpful(0)Unhelpful(0)You have already voted this
★★★★★
Gayathri (verified owner)–
Reliable you can Bank On
It's a Matte finish so looks good and works good too. Authentic Product. Will recommend and buy again.
Helpful(0)Unhelpful(0)You have already voted this
★★★★★
Amazon Customer (verified owner)–
Nice
The media could not be loaded. 1st-15% in 15 min 620 mah, 2nd-65% in 74 min 2800 mah, 3th-67% in 71 min 2911 mah, 4th-57% in 61 min 2473 mah, 5th-17% in 20 min 803 mah, 6th-65% in 74 min 2874 mah, 7th-68% in 75 min 2950 mah, Total 7 times of charging, 354% and 15431 mah
So the above mentioned numbers are according to the accu battery app, so I can't tell exactly whether it is correct or not, but I'll tell you my experience with this powerbank. It has came with cool packaging and with a sandstone design and it is a little heavy. About charging So above mentioned numbers are my usage of this powerbank for a week, it is amazing especially about charging speed from 13% to 80% it took around 1hr 11min with my vivo cable which supports super fast charging and I've used the cable which came in the box and it is also amazed me with charge speed and about power Bank charging so when it came to me it has 2 lights blinking so I've decided to charge it Fully before I use it, so it took me around 6hrs to charge it Fully with 18 watt fast charger so you can expect a full charge in around 9 to 10hrs and I've used it for my mobile for a week so according to accu battery app my mobile consumed around 16000 mah but powerbank is about 20000 mah so another 4000 mah I've no idea and I can't decide whether to trust this app or not and I've decided to test it one more time it may cause of running out of the return period but I can't judge it for only missing of 4000 mah overall it is cool except the numbers differentiation so I'll update this review after testing it out for the 2nd time.
Helpful(0)Unhelpful(0)You have already voted this
★★★★★
Amazon Customer (verified owner)–
(You should go for Ambrane Powerlit Duo 30)
Only Good for iPhones and Redmi/Poco phones.
It only supports Quick Charge (27-33w) for Redmi and PD charging (20-33w) for iPhones.
If You're buying it to charge your Oneplus/Oppo/Vivo/iQOO/Realme then it will not support the fast charging, only charge your smartphone in a standard charging speed on 10-18w.
Ambrane is supported for ever android smartphones Oneplus/Oppo/Vivo/iQOO/Realme/iPhone/Samsung/Nothing etc.
Xiaomi Power Bank 4i 20000mAh 33W Super Fast Charging PD | Power Delivery | QC 3.0|Type C Input & Output |Triple Output Ports|Classic Black|Supports Android,Apple, Tablets, Earbuds, Watches etc (MI)
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Amazon Customer (verified owner) –
Detailed Review - Must ReadWhen I bought this Powerbank, I didn't found a detailed review regarding this but now as I have used and tested this Powerbank (20000 mAh variant) for 7 days, so I think I'm eligible to write a detailed review for this. Mainly I will write this review based on 4 points, build quality, charging time of powerbank, charging speed and battery backup. So let's start.
1. Build Quality : The build quality of this Powerbank feels quite solid & nice. Its sandstone design texture and round edges makes its grip solid in hands & quite comfortable to hold. Before this I used to have Redmi Powerbank (20000 mAh) which in comparison to this Mi Powerbank feels little ugly in terms of design and uncomfortable to hold. Mi Powerbank feels less wider, thinner & more premium as compared to the previous one.
2. Charging Time of Powerbank : The day I received this Powerbank, its LED indicators showed 2 LEDs blinking which means it had battery level between 25% to 50%. So before using it for the first time, I charged it fully using my standard 10W charger.
One should also note that charging time of Powerbank along with the adapter also depends on what type of cable you are using. Using an old type C cable will take more time to charge it, as current carrying capacity of the cable decreases with time due to frequent usage. Although my 10W adapter is quite old but I have a new type C cable which supports fast charging, so I charged my powerbank with this setup and it took around 8 hours to charge it fully. So you can expect to charge it from 0 to 100% in around 11-12 hours using a 10W charger. Whereas if you use a fast charger like 33 Watt, 65 Watt etc. then ofcourse the powerbank will charge at a faster rate but it will also affect the efficiency and thermals of the powerbank in a negative way in the long run, so keep that in mind.
3. Charging Speed Test : I tested the charging speed provided by this powerbank using 3 different type C cables to charge my 4000 mAh mobile device. Each time I charged my device to 80% using different cables (in second case I forgot to check & it got charged up to 90%) and noted the overall time it took to charge the device. All the results are attached in order as screenshots for reference.
In first case, I charged it with my 2 yr old type C cable which although supports fast charging but the results were not impressive. (Time 1h 43 min Pic)
In second case, I charged it with a new type C cable which came with my tws earbuds but it does not supports fast charging and the results were relatively better as compared to the first case. (Time 1h 58min Pic)
In third case, I charged it with the type C cable which comes inside the box of this powerbank and supports fast charging, and in this case I got the most impressive results. The device got charged to 50% in just 30 min, and 80% in 1h 8min. (Time 1h 8min Pic)
So, it shows that the cable also plays a very important role in fast charging your device which many people ignore.
4. Battery Backup : Other than the above mentioned test results I charged my mobile 3 more times but didn't noted the charging time. So all in all, till now I have charged my device to a total of 406% in 6 different rounds (80% + 94% + 80% + 44% + 82% + 31%) and still 3 LED lights of powerbank are blinking which literally amazed me considering the negative reviews I read about its battery backup before buying it.
So, overall I would say you can buy this powerbank if it suits your requirements and budget. Also if you buy this powerbank then I would suggest you to charge it fully before using it for the first time and test other things during that 7 days replacement period, so if you find any issues with it, you would be able to replace it. I used AccuBattery app to record the battery percentage & time it took to charge my phone.
P.S : Will update the review in future if felt the need to do it.
Sayani (verified owner) –
Good productGood product for daily uses, can charge laptop too but very slow charge. Durable, easy to carry , light to show juice left in it, size not that compact, elegant design
Raiderrrrr (verified owner) –
CapacityI have upgraded to 4i after using 3i for 2 years .. i am satisfied with the capacity and charging speed . Can charge my s20fe 4 full times and have a lil juice left for another 10-15% .
The only con i would say is the build .. we get a plastic build compared to metal on older 3i .. and i think mi could have added an led/oled display to show percentage left instead of old style 4 LEDs .
Overall its a very good product with minimal cons . So u can surely go for it
Amazon Customer (verified owner) –
Useful!Quality is good, idk sometimes it stops working for few minutes and becomes normal too. Takes more time to charge (for me 8 and half hours which is quite more compared to others). Easy to carry. Power level is Good.
Amazon Customer (verified owner) –
Compact and powerful!I’ve been using this power bank for a few weeks now, and it’s amazing! It’s lightweight, easy to carry, and charges my phone from 0 to 100% in about an hour. The build quality is solid, and the fast charging works perfectly.
Gayathri (verified owner) –
An excellent beast of a powerbank!There are many powerbanks from multiple companies out there that will provide you with more features or they could be cheaper , and you would be tempted to buy those instead.
But the fact is there's no need. At the end of a day we just use our powerbanks to just charge our devices and nothing more, and this one is efficient.
This powerbanks battery is phenomenal, when I got the product I first charged it to full ,
and from then I have been using it daily to charge my 5000mah phone once a day.
Its been 13 days now and two LEDs are still glowing, which means it's at 50%juice left. Even if remaining charge is about 30% or something its still mindblowing capacity.
And it has a 33W input and output via type c port, and it's the best in the range.
I can charge the powerbank quickly in about 8-9 hours from 0 to 100 and it will last me about two weeks in my usage.
But just a con is that its very smooth so it's slippery , you might want to handle it carefully or buy a case protection for it.
Xiaomi Power Bank 4i 20000mAh 33W Super Fast Charging (verified owner) –
Most praiseworthy fast charging powerbankSuperfastcharging with the cable provided iw the highlight .
Can easily use for 2-3 days in full charge.
Cost effective.
Nice design and color exactly as shown.
Doesnt heat too much.
Adequate cable length.
Portable and durable.
Reviewing after 1 month of usage.
Recommended 👍.
Gayathri (verified owner) –
Awesome power bankSuper fast charges the device. Good built quality.
Amazon Customer (verified owner) –
Awesome power bankSuper fast charges the device. Good built quality.
Gayathri (verified owner) –
ExcellentGood power bank. Good battery backup.Been using for the last 3 years no issues. Worth for the price
Gayathri (verified owner) –
Reliable you can Bank OnIt's a Matte finish so looks good and works good too. Authentic Product. Will recommend and buy again.
Amazon Customer (verified owner) –
NiceThe media could not be loaded. 1st-15% in 15 min 620 mah, 2nd-65% in 74 min 2800 mah, 3th-67% in 71 min 2911 mah, 4th-57% in 61 min 2473 mah, 5th-17% in 20 min 803 mah, 6th-65% in 74 min 2874 mah, 7th-68% in 75 min 2950 mah, Total 7 times of charging, 354% and 15431 mah
So the above mentioned numbers are according to the accu battery app, so I can't tell exactly whether it is correct or not, but I'll tell you my experience with this powerbank. It has came with cool packaging and with a sandstone design and it is a little heavy. About charging So above mentioned numbers are my usage of this powerbank for a week, it is amazing especially about charging speed from 13% to 80% it took around 1hr 11min with my vivo cable which supports super fast charging and I've used the cable which came in the box and it is also amazed me with charge speed and about power Bank charging so when it came to me it has 2 lights blinking so I've decided to charge it Fully before I use it, so it took me around 6hrs to charge it Fully with 18 watt fast charger so you can expect a full charge in around 9 to 10hrs and I've used it for my mobile for a week so according to accu battery app my mobile consumed around 16000 mah but powerbank is about 20000 mah so another 4000 mah I've no idea and I can't decide whether to trust this app or not and I've decided to test it one more time it may cause of running out of the return period but I can't judge it for only missing of 4000 mah overall it is cool except the numbers differentiation so I'll update this review after testing it out for the 2nd time.
Amazon Customer (verified owner) –
(You should go for Ambrane Powerlit Duo 30)Only Good for iPhones and Redmi/Poco phones.
It only supports Quick Charge (27-33w) for Redmi and PD charging (20-33w) for iPhones.
If You're buying it to charge your Oneplus/Oppo/Vivo/iQOO/Realme then it will not support the fast charging, only charge your smartphone in a standard charging speed on 10-18w.
Ambrane is supported for ever android smartphones Oneplus/Oppo/Vivo/iQOO/Realme/iPhone/Samsung/Nothing etc.