🙊🛠 20,000 mAh is 13,800 mAh: Mi Power Bank 3i 💔💥 Testing & Tear-Down

Others Powerbank from BCD Technology
• Power Bank (BCD Techno...
. In this video, we tested and open the Mi Power bank 3i 20,000 mAh
Here are the results
Testing:
Charging
1. Takes 6h 53m for the full charge at 9V
2. Total 10.36 Ah at 9V
3. Total of 92.67 Wh Energy Consumed
4. Charging Efficiency 79.85 %
Discharging
1. Take 4h 23m for full discharge at 9V
2. Shows 7.90 Ah at 9V
3. Total 69 Wh Energy is recorded
4. Discharging efficiency of 93.24 %
5. Capacity at 5V is 13800 mAh
6. Charges 4000 mAh Capacity phones only 3.45 times
7. Charges 6000 mAh Capacity phones only 2.30 times
Tear-Down
1. 2x 10,000 mAh li-poly cells
2. Cell ICP 11/63/115
3. ZMI01P
4. ZMA 6232AU
5. Solid construction, plastic body
Conclusions:
1. fake claim of 12V charging through micro USB and USB-c end
2. Exact capacity at 5V is 13,800 mAh
3. Takes 6 h 53m for full charging at 9V
4. Good internals
Recommendations
Good for buy
Old Video: • 💔 #Fake 12V #Charging ...
Specs:
Model: PB10IZM
Input: Flase claim
Output: 5/9/12 through USB C with PD 3.0 (18W), QC 2.0, QC 3.0, AFC, FCP and Apple 2.4 A
5/9/12 through micro USB with QC 2.0, QC 3.0, AFC, FCP and Apple 2.4 A
Capacity: 13800 mAh at 5V
Energy: 68 Wh Claimed 74Whr (Next Video)
Link: 20K: amzn.to/3nfik7Y
10K: amzn.to/2HSosTF
2i: amzn.to/36qlpfJ
#20000mAh # mi #powerbank #bcdtechnology #bcdtech
******************************************************************
My recording Gears:
Camera: 🎥Sony Alpha a6300
Mic: 🎙 Rode Video Mic Pro Plus /🎙Zoom H5 Recorder with SSH-6 capsule
Editing: Vegas Pro 365
Laptop: 💻 GS43VR 7RE MSI
Tripod: Harison Bahubali
******************************************************************
For Business Inquiry contact [e-mail] or [e-mail]
******************************************************************
Follow me on:
www.bcdtech.in
/ bcd_tech
/ bcdtech.in
(c) 2020, BCD Tech, rights reserved.
******************************************************************

[@agrimkulshreshtha2054]

Sir you are my favourite youtuber. I am your subscriber since 2016....Please pin my comment sir please!

[@sonukumar11]

Kindly also test all power bank din the best

[@v11aibhav]

Please suggest which is best 20K mah power bank...

[@RaeesUnboxingwala]

@@v11aibhav yes, I too would like to know that

[@atmaramyadav2779]

Sar realme Power Bank 2 ka test Kijiye Jo 20000 MH ka hai

[@techyhimoni]

Itne technical words use hue ki mere to kuchh samajh nahi aaya 😀😀

[@ShuvransuBehera]

Never Saw Such a Detailed Review 😱

[@Sahanawaj_]

College ki professor hai sir!

[@Theimmortalgandhi]

@@Sahanawaj_ konse college

[@Sahanawaj_]

@@Theimmortalgandhi woh to pata nahi lekin sir ne ek din bola tha Q&A main!

[@Theimmortalgandhi]

@@Sahanawaj_ jinda h tu abhi tk reply krne k lie 😂😂jisko tune reply kia wo to mr gya lgta h

[@Sahanawaj_]

@@Theimmortalgandhi 😂

[@DanishKhan-ty2pm]

Very few tech youtubers review the products at this level. Great work! I have a request. Please compare Realme's newly launched 20000mAh power bank 2 and Mi power bank 3i.

[@SocMohit]

realme vs mi k power banks compare kijiye sir

[@NIGHTSIP]

OnePlus is better

[@sajitht9434]

Xiaomi or whichever manufacturer usually specifies the capacity of power bank in terms of the internal rechargeable battery used.A charging process by powerbank will go through the following process. 1) The 3.7(4.2 volt on full charge) internal lithium ion or lipo cell volt has to be stepped up to 5 volt usb standard. 2) The 5 volt usb out will be stepped down to 4.2 volt by the charging module of the smart phone to recharge the 3.7 volt internal battery of the phone. Thus a charging process includes the above two steps where first step involves a considerable loss of energy in boosting and further second step too will make some loss of power in stepping down.In whole together no power bank in the world as far as I know can give combined efficiency of more than 80 percentage of the battery used , during the above two processes.upto 70 percentage efficiency is the most common and some few products like iBall IB LP 10000 are giving efficiency of upto 77 percentage and that due to simple booster circuit which involves minimal components in circuit. If battery is charged to a voltage of 4.3 then ofcourse it will appear that efficiency is increased but life of the cell will be reduced substantially.

[@Sam-wh1po]

Who are you so wise in the ways of science ? 🙏🙏

[@206_akbarisahil7]

I had that iball power bank which worked for a year and then it got swollen but still I am happy as I got it for just 299/- from flip kart sale

[@akshaykamath6934]

Ps : is comment ko pin karne bolo bosudiwalon

[@KnightRYAN007]

Are you human or AI ?

[@deekshitm3612]

Came here after watching other KZbinrs "reviewing" the products just by comparing the specs. But you have what is right thing. Thanks for the details and showing the facts. Keep brining such videos.

[@TastyStreetFoods]

Excellently True...same power bank charge my phone only 3 times....true conclusion 👏🏻

[@robot8816]

Only u can have problem. My powerbank is charging my 4000Mah 5 times . I am using it from one year.

[@gaganahuja11]

Only you explain things technically. You should be the real technical guruji💥

[@krrishshriyan9775]

Just an advice when buying a powerbank always expect 2/3 of the capacity written on the box for a more accurate numbers

[@epicinfo9196]

Awsome video sir worlds best KZbin r

[@ShuvransuBehera]

Yes bro...

[@AutoTechWorld]

Thanks for the detailed info You have Worked hard for this video keep it up

[@debasish005]

Recently purchased Mi 3i 20000 mAh. It charged my Samsung M52(5000 mAh) 0-80% 3 times and 0-60% 1 time. Calculating it 5000×80%= 4000 mAh and 5000×60% = 3000 mAh So I got 4000×3+3000= 15000 mAh actual output.

[@akshaykamath6934]

Due to the voltage difference between the powerbank and the phone there will be some energy that is lost, after all we are not talking about an ideal condition are we?

[@thenocturnalcoder9711]

When attempting to make such videos, it's important to understand the fundamentals as well as what the specifications really mean. 20000 mAh is the capacity of the LiPo battery pack at its nominal voltage of 3.7V. It is NOT the output capacity of the power bank itself. There will be an inherent loss in the switching DC-DC converter. Going by your number, 5x13800 / (3.7 x 20000) = 93.24 % efficiency, which is well within the specs of a good power bank

[@ImranAhmed-pu8le]

So comparing to other power bank Is this power bank is better to buy? @the nocturnal coder

[@jec_ecart]

Your channel is a gem. You should make more videos.

[@nirnimeshde7231]

Excellent detailed review , deep information gathered from the video. Excellent 🔥🔥

[@basicconceptsofmaths609]

Still this Power bank is the best.... There is no company like mi.... 💯% energy can never be transferrable

[@TechyHrik]

Itna detail mai review aj tak nehi dekha koi power bank ki 😅😅 Mast 1st class review...............

[@dhananjayraj8901]

Everything explained about this. Salute you👍

[@jitendrakumar-nf9xz]

Very underrated channel i will share this channel Thanks sir for detailed and scientific review very very youtubervdo that

[@samarthpatil2077]

Xiaomi could go bankrupt if this video goes viral. Btw great content

[@cronos1675]

The creater him self is selfish 100% energy can never be transfered and the battery is rated 4.2v and the module is stepping it up to 5-12v so there is lot of enemy wasted .. dumb creators will remain dumb .

[@yaminsiddiqui4690]

6:37 efficency lol

[@falconheavy6774]

The advertised cell capacity is 20000 mah if we calculate by using 3.7v and 74 Wh but if we calculate cell capacity by using 5v and 74 Wh then the cell capacity as advertised is 14800 mAh. According to you test you got 13800 mAh. So technically you got 94% of what was advertised.

[@dranupshetty]

This type of teardown review is unique and next level. Superb. Genuine views about technicality and quality. I am sure you have done lot of benchwork and excellent theory knowledge. Awesome.

[@reversemyopia]

Anyone else attempting to open Power banks like this should use Iso-Propyl alcohol and discharge the power bank completely before opening

[@Indian_Speaker_Guy]

The best review + detailed explanation video.. Please also do the same to Ambrane 27000mAh powerbank👍

[@dbd4013]

My 3i charges in 6-7 hours with USB moto turbo charger and does give 20000 mah as it charges my 3000 and 40000 mah mobiles by 4-5 times, giving around 14-15000 mah actual charge, which is 20000 mah power bank, since 20-25% is lost in charging

[@chaichait6879]

Lost in charging??? 5000mah lost i dont understand

[@brutusj.8523]

This is a real technical review! 👍

[@royalindia7962]

Gajab Bhai Behtareen video Like tho definitely Banta he hai

[@hardikshit]

I can relate I'm using it and it hardly charges my phone upto 3 to 4 times...

[@144shriramkoshti7]

How much mah battery does ur phone have

[@144shriramkoshti7]

27 watt ke charger se charge karr sakte haii kya usee

[@144shriramkoshti7]

Kitna time lega 27 watt (type c ) se

[@hacker6695]

Calculation seems wrong...you discharged @ 9V and calculated power w.r.t 5V. Also you did not show output of Your Charger..is it capable of giving output 12V / 15V?

[@manzoorahamed5577]

Awesome bro, majority of your views through power bank charge discharging measurement tests, as iPhone users confused with which w charger they have to pick, I suggest you to make iphone charging related content which has high demand. Thanks

[@RaeesUnboxingwala]

I'm definitely sure this and the previous video combined, becomes the best and the most comprehensive videos about Mi power bank 3i on entire internet Awesome Work 👌🏼👍🏼 I'll give these two video links in my mi power bank 3i Unboxing video description when I will buy it

[@dulanjala]

thanks for the hard work measuring all this data..

[@SpunkyMonkey23]

😮The best review on KZbin i have ever seen ❤ keep going brother

[@hansrajparmar9500]

Sirji Kya MI 3i Power Bank se 10W Led Tourch Kar sakte he our kya Karni chahiye ya nahi?

[@tasaddumollick5222]

There is no one except you who provide such a factual informative video with simplistic way. Great work ❤️👍

[@prataymanna4527]

this is called a "quality content" ❤

[@cleanslate5584]

watching in 2024 and still relevant

[@ranjitamasih2299]

Hello sir really loved ur video and loves the way u teach some electronic components basics in ur videos..Pura B.tech complete kar liya par yahi samaj me aaya hota kya hai ye sab.

[@hitlerlovesjews616]

someone should file lawsuit and sew these companies in court for misleading

[@ghumantujantu3261]

After a long time very informative video on KZbin.

[@yaiphuakhakpa227]

This show it is atleast in a good range. If we take indian brand battery ,(lead acid) than the real efficiency is much less than 50pc of of its rating power before safe cut off.

[@pankajbajaj4363]

Thanks for making this video its really very help full for me i bought this to going 10 days out side from my house its very cheap product dont go buy thanka sir

[@piyushkumar-iy4vd]

Description me kya jhakaas likha hai sir aapne....great video as usual

[@BCDTech]

Results

[@piyushkumar-iy4vd]

@@BCDTech soory sir jhakaas likhna bhul gaya

[@rajeevraul4889]

Thank You very much for your test on technical ground. I am planning to buy this for my DJI Pocket 2 camera just because it has 'Low Power Charging Mode' too. (It may be used for continuous power support while recording with DJI camera). My DJI camera's battery info is ...875mAh capacity / Voltage 7.7 / Energy 6.738 Wh / input 5V-2A / Output 5V-500mA. DJi company has developed a charging case for this with... 1500mAh capacity / input 5V-2A / Output 5V-900mA / Adapter 5V/2A or 5V/1A. SO MY QUESTION IS... WILL THIS MI POWER BANK SUITABLE FOR MY CAMERA????? As per technical specification this power bank has lowerest power support of 5V/2.4A with usb-A.

[@user-sq2uh3cd4p]

Remember energy loss while step up or down voltage

[@PratikDeshmukh1]

Wowww….take a bow mere bhai, what a review

[@sgy4580]

I have Mi 1000mAh power bank and I tested its capacity using USB tester and its real capacity was 7000 mAh. Good 18650 (Genuine Orange,BAK,Roofers brand) battery based power bank gives exact power.

[@Dant33vans]

AWG t shirt same as mine.. nice 😂

[@crazyguys606]

Sir, Ambrane PP 30 Pro ka TearDown and capacity check Karke batado please.

[@mdwali2885]

this video deserves millions of views

[@Zorema_Hnamte]

I dont know hindi but let me comment it according to what the title says. It means, this powerbank have a capacity of 20000mah at 3.7v, and as its output is boosted to 5v, it gives 13800mah at 5v.

[@vincentraxe]

Basically..

[@abhi02021989]

Very nice informative video...plz share which power bank to buy ?? Which has the best capacity

[@jasmeetsingh-ip1sb]

Sir koi bhi power bank lay lo capacity 65 to 70% hoti hai exactly ..like 10000mAh had 6500-7000 and 20000 have 13500-14000

[@itspmohit]

Your calculation of the mAH value (13800) is wrong. The battery is rated at 20000 mAH @ 3.7V Now, Converting the 69Wh to mAH @ 3.7V it gives 18648 mAH. Also, The calculation that it can charge 6000mAH battery 2 times is wrong. It will depend on the power capacity of the battery being charged. mAH shouldn't be used to calculate the number of times a battery could be charged. It will depend on the mAH value in addition to the rated voltage of the battery to decided the actual capacity on the battery in Wh and then using that to calculate the number of times it can be changed using the power bank. ie. 69/ Eg. If the battery is 6000 mAH and the rated voltage is 3.85 (typical for mobile phones), We get the capacity as 23.1 Wh. That mean the power bank can charge the battery 69/23.1 ~ 3 times

[@Hari_Nandan]

😳 omg aise hi har company ke fake dawo ka khulasha jaroor jijiyega bahot achha lga 👍

[@starmobiletech5161]

Very nice usefull video sir

[@5.0GHz]

Kya mi 3i ko ek sath 2 chargers se charge kar sakte h Micro + type c

[@umeshsaini783]

Hard work👍👌 🥺

[@bhawanapaneru3635]

Plz help I want to buy a power bank 1 - mi power bank 3i 2- realme 20000 Which one I buy I want to charge realme 5 realme 7 and samsung j2

[@muralidandu8993]

I saved my money, sir thanksyou

[@ravipatil8920]

Hi bro actually I want to buy this power bank but I have a confused between urbn 20000 18 w power bank so what u say now a days so many people saying urbn is good nd price also less than mi so what u say plz suggest me..

[@user-ne4rb4uw7i]

Love from Bangladesh🇧🇩 Helpful video😮

[@Harjot.Singh_]

sir please ek baar portronics ke powerbank luxcell 10k ke sath kariye ye test please

[@raghavpotdar5391]

I bought this powerbank recently to power up my wifi router. I have a NOKIA router. It's adapter has rating of 12V/1.5A. This power bank has also claimed to have output of 12V/1.5A from both Type A and Type C port. I tried DIY solution to make cable from USB-A to wifi router port. But, Wifi router is not working with it. Do you any suggestion for my DIY Powerbank UPS? or can you show any idea to do this?

[@juzzz.]

You found any solution on using powerbank for router? i am thinking same for my jio router.

[@arbeitslosyt3377]

Exact calculation Mere pass A50 hain usko ye power bank 3 baar charge karata hain.

[@sanjaykexclusiveofficial4985]

Testing True Original Output 13800 mAh Thank you sir g

[@kishkamal5586]

Best youtuber ever

[@raystonrizwan7800]

You started test with appx 8.8 volts *1.8 amps =15.84 watt hours for 4.5 hours like you said that is appx===15.84 *4.5 watt hours =71.28watt hours capacity of powerbank-that is appx 19260 MAH POWER BANK AND CHECK YOUR TESTS AGAIN

[@machanvlog2425]

pls tell me sir which power bank best in 20000mah

[@jaatclubyt5999]

Sir koi best power bank prefer kijiye 20000mah ka. I hope that reply me . Thanks

[@___7y6]

Can you do a similar review for ambrance 20000mAh Power bank which comes with 22.5watt fast charging. Really liked this video

[@lovegurdeep4555]

Sir i had a mi 3i 20000mah power bank which i have been using for 3 years now its battery has been swollen i have bought a new one my question is can i store the old one in discharge condition or it is unsafe i have to throw it

[@vivekkumarchaurasia2223]

Kya aap only charging or discharge ka video bana sakte h MI 30000 MAH Power Bank ka

[@asfakullakhan4378]

sir , Callmate power bank 50000mah ko test kigia.

[@KuntalGhosh]

It's not a false claim. The 20000mah is claimed at 3.7v internal battery voltage. Which comes up to 74w/hr. Measured capacity at the usb ports will always be slightly less w/hr due to conversion loss. If u want to test the real capacity of the cells. Charge the cell to 4.2v and discharge it with a constant current and measure the amp hours till 3v.

[@KuntalGhosh]

Nice review. Good work. But u made some mistakes. Phone battries are generally 3.77v (almost all modern phones use lithium hv and charge the cell to 4.4v). Mah is not the correct way of measuring battery capacity. U should use the watt hour only. Like a 4000mah battery has 15w/hr . 6000mah battery has 23w/hr..u also have to consider the conversion loss at the phone. Generally it's 95% efficient. The power bank did extremely well with 93% at the usb ports that is much better than what i was expecting. They can extract more capacity with better more efficient charge controller but those few percent efficiency gains will dramatically increase pricing of the product. If they use gan fets they can probably get 96% but it will most likely increase the price to double.

[@KuntalGhosh]

At this price point i expect not much more from a powerbank.. usb 12v was not triggering probably due to incompatible charger. And some of your measurements were off due to extremely long type c cable . Like i could see 8.8v at the meter so more than likely 200mv is dropping in the cable and much more were dropping at the load end. And these devices are intelligent enough to limit current in order to not make a thermal runaway situation of a cheap cable that has high internal resistance.

[@D2S_Guru]

why manufacturers are claiming their power bank have 10k mah or 20k mah power capacity but in actual the capacity is just 7k mah or 13k-14k mah?

[@BCDTech]

Publicity: actually inside battery is of 3.7 Volts at 10k mAh. Means energy 37Wh. But your phone is going to charge with 5V, means 37Wh/5V = 7400 mAh and if 90% efficiency, then 6600 mAh.

[@D2S_Guru]

@@BCDTech thank you. but brands must said final output instead theoretical capacity. like if it's gives 16k mah than don't said 20k mah. what you said sir?

[@debasishmandal005]

@@BCDTech If the phone charges at 9V/2A then will the actual capacity be 69Wh/9V = 7666 mAh ?? I am asking about the 20000 mAh Mi 3i powerbank.

[@PARTHHBISWAS]

How can i get that two thing .which you use in your video.meter & dischargeer.

[@BCDTech]

search usb load and usb power meter on google

[@PARTHHBISWAS]

Thank you

[@DineshKumar-xh6sx]

Where I buy the circuit board for this power bank

[@ankitarun69]

Which one we should at best.

[@TT-ii5bu]

Please give your tools list which are you tools you for test measurement and where to get from ?

[@suyogrokade9197]

So this is normal for all power banks or any manipulative claim by xiaomi

[@kaludas2151]

Too much technology detail ..thanq sir

[@deepakkumarpk]

Sir best fast charging Power Bank 20000 mAh battery? my mobile is OPPO.

[@radiodx2937]

Which one do you recommend? Already using Boat and Philips which I bought for less price. But would like your suggestion on quality.

[@sanatkumar1945]

definitely an electrical engineer..

[@darshkaushal5485]

best power bank batao sir konsa lei ??

[@avinashcj398]

Great test, can you also test the new launch of urbn 20000 mah 3.0 green latest power bank lik this.?

[@mdsameer7852]

Very very good sir jee wonderful jankari good

[@yogeshtonde8414]

Sir Bahot mast banaya hai ye Video 👍

[@ABHISEKCREATION70]

Tank you sir , main baass kharid ne wala tha.

[@AHM_005]

Best review ever 👑👑

[@Bvishal8801]

Best info about Mi power bank 20000mah 3i 👌👌👌👌💖

[@alexilongs]

Sir please teardown noise Bluetooth neckband

[@lifestyle5546]

I am full trust mi company brands

[@hrithikaron1992]

Sir i have the same power bank , i want to power up my RaspberryPi 4 which requires a power supply of 5.1volts , 3 ampere and 15 watt . How should i power it up without damaging the RaspberryPi components . RaspberryPi 4 has a Type-C connector and i have a Type-C to Type-C power cable and the Type-C cable from the box of mi 3i Power bank. And also Suggest how many Ampere can the safe charging mode deliver?

[@BCDTech]

Normally it deliver 5V and ampere depends upon the load/project. I am using 10,000 mAh reaalme powerbank with my an adreno project from last 5-6 months without any problem.

[@hrithikaron1992]

@@BCDTech sir thank you for the reply. I still do want to know can low power charging mode deliver upto 3amps to power the raspberry pi 4 up? Arduino can work at even 500 mili ampere. But raspberry pi 4 can draw from 2.4 amp - 3 amp. If the power bank can deliver 5v and 2.4 - 3 amps in Low power mode over usb Type A to type C. I will use it in low power mode only and not risk it to connect to Type - C power delivery or normal mode. Please check the maximum ampere safe charging mode can deliver.

[@subho1766]

@@BCDTech It's Arduino. Not Adreno. Unless you are working with semiconductor fabrication.

[@bhanupratapchoudhary4808]

Kese pata ker k Power Bank original hai ya duplicate 👈👈👈👈✋

[@akashrevanna5327]

PLEASE SUGGEST 3i vs Hypersonic power bank, which one i need to prefer??? there is no concern on price, just need value for money.

[@mahathirhamid]

sir Iam verry happy. Thise video verry nice.

[@hamzakhan-wc4pt]

I didn't seen like this experiment and explanation

[@bsbehera1230]

Philips type c or Micro USB module kit milega