Mi 2i Vs Mi 3i Power Bank: Here’s Your Perfect Choice!

Mi 2i Vs Mi 3i Power Bank
Mi 2i Vs Mi 3i Power Bank

Xiaomi’s power banks are famous all around the globe. They provide great power banks at very reasonable prices. And that’s why it has become very difficult to choose a perfect power bank, due to multiple options at the same price range available in the market. A while back, Xiaomi launched a brand new power bank Mi 3i in 10000 mAh and 20000 mAh. Before this, the generation started with Mi 2i. Both these power banks of the same generation have many similar features and you might get confused in choosing one. So, I have separately used both the power banks for a brief comparison. And the results I saw were different from what its mentioned in multiple sources.

After testing both the power banks, I know which one you should buy. So, let’s not waste a single Minute and get Straight into the comparison chart, personal opinion, and final verdict of both the power banks. Remember, it’s very necessary to have detailed knowledge of the gadget you want to buy. Moreover, detailed research would help you to choose the best product.

Mi 2i Vs Mi 3i Power Bank: Comparison Chart

ParticularMi 2i (10000/20000 mAh)Mi 3i (10000/20000 mAh)
Battery Capacity 10000/20000 mAh 10000/20000 mAh
Body MaterialLithium Polymer Lithium Polymer
Support TypeMicro USBMicro/ C Types USB
No. Of Ports23
Weight277 grams 434 grams
Dimensions14.6 X 7.4 X 1.515.1 X 7.2 X 2.6 CM
Protection Chip 9 protection chip12 protection chip
Input Parameters (10000 mAh) 5.0V/2.0A 9V, 12V 18W (USB-C) 5V/2.1A, 9V/2.1A, 12V/1.5A (Micro-USB) 5V/2.1A, 9V/2.1A, 12V/1.5A5.0V/2.0A 9V, 12V 18W (USB-C) 5V/2.1A, 9V/2.1A, 12V/1.5A (Micro-USB) 5V/2.1A, 9V/2.1A, 12V/1.5A
Output Parameters (10000 mAh)(Single port USB-A) 5.1V/2.4A, 9V/2A, 12V/1.5A (Dual port USB-A) 5.1V/2.6A(Single port USB-A) 5.1V/2.4A, 9V/2A, 12V/1.5A (Dual port USB-A) 5.1V/2.6A
Input Parameters (USB-C) 5V/3A,9V/2A,12V/1.5A(Micro-USB) 5V/2A, 9V/2A, 12V/1.5A (USB-C) 5V/3A,9V/2A,12V/1.5A(Micro-USB) 5V/2A, 9V/2A, 12V/1.5A 
Output Parameters (USB-A) 5V/2.4A, 9V/2A, 12V/1.5A (USB-C) 5V/3A, 9V/2A(USB-A) 5V/2.4A, 9V/2A, 12V/1.5A (USB-C) 5V/3A, 9V/2A, 12V/1.5A (Triple-port) 5V/3.6A

Mi 2i Vs Mi 3i Power Bank: Personal Opinion

Mi 2i Vs Mi 3i Power Bank
Mi 2i Vs Mi 3i Power Bank

After using both the power bank for a week, I found Mi 3i Better than Mi 2i. Though 3i is the newest version, it doesn’t have a lot of changes but some changes are sufficient enough for you to go with Mi 3i. The charging power of Mi 3i was quite better than 2i, though there wasn’t much of a difference. If we talk look-wise, Mi 2i is kind of better than 3i. Mi 20000 mAh 3i is a lot bigger and heavier than Mi 20000 mAh 2i. But for me, charging time, battery and other features matter when I have to buy a power bank. So, in my suggestions, you should go with Mi 3i.

This is my personal opinion. Below is a detailed comparison of both the power banks and the final verdict. You can check all the comparisons in detail below.

Both versions of power Bank have two different types. The Mi 3i 20000 mAh is available at Rs. 1,699 while, on the other hand, Mi 3i 10000 is available at Rs. 999 Only. Similar to this, Mi 2i 10000 mAh is available at Rs. 999 and the 20000 mAh version of 2i is available at Rs. 1499. The 10000 mAh power bank of both generations have similar pricing whereas the 20000 mAh version of Mi 3i is Rs. 200 costlier than its 2i generation.

As both power banks have similar prices, it could get a lot more confusing in which one you should buy. (Note- The prices mentioned above are at the time of writing, you can recheck the prices before you buy.)

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Both Mi 3i and Mi 2i power banks have advanced sensors of resistance. Mi 2i and 3i both have Lithium Polymer Batteries. And these batteries are way better than normal batteries. Lithium polymer batteries usually increase the conversion rate of charge so that they could bring stabilization in release voltage.

But there’s a slight difference between both the power bank, With a Mi 3i power bank of 20000 mAh, you can charge three Mobile phones simultaneously that is at the same time. While on the other hand, you can charge only two devices simultaneously with a Mi 2i power bank of 20000 mAh. If an 18 Watt charger is used, your phones will get charged much faster.

The battery features of both the power bank are the same but Mi 3i is much better than 2i as it has some advanced technologies and you can charge more number of phones simultaneously.

So, Mi 3i wins in the battery comparison.

Charging Time

Mi 2i
Mi 2i

If we talk about the charging time of both the power bank, then the charging time of Mi 3i 10000 mAh is 3-4 hours approximately. This is when an 18 Watt charger is used. If you will be using a 10 Watt charger it will take about 6 to 7 hours to fully charge the power bank.

While if we talk about Mi 2i of 10000 mAh, it will take about 4.5-5.5 hours to fully charge with an 18 Watt charger. It will take about 7 hours to charge when you are using a 10 W charger.

The 20000 mAh version of Mi 3i would take approximately 7 hours when you are charging it with an 18 Watt charger. It can take up to 10 hours if you charge it with a 10 Watt charger. Mi 20000 2i will take the same time to charge with different chargers. But, when I used the 20000 mAh power bank, I found it has the same output as its 10000 mAh version.

So, Mi 3i would be a good option if you need a good output after charging your power bank for 7 hours.

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Design And Look

Xiaomi will provide you the best features in its gadgets but it always lacks one thing, its look, and design. The Mi 2i and 3i power banks have similar looks. There is no change in the new generation of the power bank.

Mi 10000 mAh 2i and Mi 10000 mAh 3i have the same look and approximately the same weight. While on the other hand, Mi 20000 mAh 3i is very bigger and heavier as compared to Mi 20000 mAh 2i.

If you need a good design power bank, you should go with a light-weighted Mi 2i.


Security of your gadget is very important, as you don’t know what could happen to it. So, good security of your power bank is necessary too. The older version that Mi 2i had 9 layers of a security layer, which is definitely very productive. While the newer version of the generation, Mi 3i has 3 more security layers as compared to Mi 2i which is 12 security layers.

So, no doubt, Mi 3i is more secure as we compare it to Mi 2i.

Number Of Times A Phone Can Be Charged

Mi 3i
Mi 3i

Okay, so nowadays mobile phones have 4000 mAh battery or more. Both versions of Mi have the same ability to charge several phones. A mobile of 4000 mAh can be charged 3 times with a 20000 mAh power bank and about 1.5 times with a 10000 mAh power bank. This basically tells that a 20000 power has 12000 mAh battery capacity and a 10000 mAh power bank has about 7000 battery capacity.

Overall, both power banks have equal capacity to charge a similar number of phones.

Input And Output

Both versions of the Mi power bank have the capability of 18 W fast charging, input, and output both. This means that the charging of power banks and the charging of mobile phones both will be fast. While Mi 3 has more benefits in Input and output fields, the old Mi 2i has only Micro USB for power bank charging. But the new version Mi 3i also has a C-type port. And that’s the biggest advantage because you don’t have to wander around asking for a micro USB cable.

If we talk about the output of both the power banks, Mi 3i has much more advanced technological features as compared to Mi 2i. The greatest advantage is that it has C-type cable support for both input and output for charging. You can even charge your phone with a C-type cable and also charge your power bank with the same cable.

Mi 2i doesn’t have these features and that’s why is less efficient as compared to its newest version.

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Mi 2i Vs Mi 3i Power Bank: A Quick Comparison Result

ParticularMi 2iMi 3iWhich Is Better?
BatteryLithium Polymer Lithium Polymer+ EfficientMi 3i
Charging Time4.5-5.5 hours3-4 hoursMi 3i
Design And LookLight weightHeavy and largeMi 2i
Number Of Ports23Mi 3i
InputOnly micro USBMicro+ C Type USBMi 3i
OutputAny USBAny USBMi 3i
Security 9 security layers9+3=12 security layersMi 3i
Number Of Phones it can chargeSame for bothSame for bothAny
Circuit DamageA little dangerNo dangerMi 3i

Mi 2i Vs Mi 3i Power Bank: Final Verdict

Xiaomi 2i  VSXiaomi 3i

There’s no doubt in saying that both power bank has similar features but Mi 3i has some exceptional features that Mi 2i cannot beat. Battery life, charging time, input and output feature everything is way better in Mi 3i. In addition to this, Mi 3i is more secure than Mi 2i as it has 3 more security layers in it. So, if it falls, the power bank will be safe.

Moreover, Mi 3i has fewer circuit damage issues. So, if you want your Power bank with high input-output power and efficient battery usage then you should definitely go for Mi 10000 mAh or 20000 mAh 3i. But if design and only battery Performance is the thing you are looking for then go for Mi 10000 mAh or 20000 mAh 2i.

If your questions aren’t answered, you can ping your questions in the comment section, we will help you find a perfect product for you.

Frequently Asked Questions

1.What Is The Difference Between 2i and 3i power banks?

Both of the versions are of the same generation with a slight difference. For example- 2i doesn’t have C Type cable access while 3i has C-type cable access. You can read more differences between both the power bank above.

2. Does Mi 3i have a Power bank?

Yes, Mi 3i is a power bank available in two different types, one is 10000 mAh and the second one is 20000 mAh.

3. Does Mi power bank 2i support fast charging?

Yes, you can charge Mi 2i with 18 W, both ways. Your power bank can be charged with an 18 Watt charger and your phone could also be charged with 18 Watt.

4. What Is The Meaning of 3i in power bank?

3i or 2i means several output ports. 3i has three output ports, which means three phones can be charged simultaneously at the same time. While with 2i, two devices could be charged simultaneously.

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Written by Damini Tripathi

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