Slickdeals is community-supported.  We may get paid by brands for deals, including promoted items.
frontpagephoinix | Staff posted Today 07:40 AM
frontpagephoinix | Staff posted Today 07:40 AM

Prime Members: INIU 5000mAh Wireless Portable Power Bank w/ Built-in USB-C Cable

+ Free Shipping

$11

$36

69% off
Amazon
22 Comments 7,396 Views
Get Deal at Amazon
Good Deal
Save
Share
Deal Details
SimpleLife LLC via Amazon has for Prime MembersINIU 5000mAh Wireless Portable Power Bank w/ Built-in USB-C Cable for $22.49 - 49% automatic discount at checkout = $11.47. Shipping is free.

Thanks to Deal Hunter phoinix for sharing this deal.

Product Details:
  • Compact enough to fit in your palm (3.2 x 1.5 x 1.1 inches) and weighing just 4.1 ounces
  • Offering up to 5W fast wireless charging
  • Built-in USB-C Cable

Editor's Notes

Written by qwikwit | Staff
  • About this Deal:
  • About this Product:
    • 3 Year INIU Care Warranty
    • Rated 4.5 out of 5 stars at Amazon based on over 260 customer reviews.
  • About this Store:

Original Post

Written by phoinix | Staff
Product Info
Community Notes
About the Poster
Deal Details
Product Info
Community Notes
About the Poster
SimpleLife LLC via Amazon has for Prime MembersINIU 5000mAh Wireless Portable Power Bank w/ Built-in USB-C Cable for $22.49 - 49% automatic discount at checkout = $11.47. Shipping is free.

Thanks to Deal Hunter phoinix for sharing this deal.

Product Details:
  • Compact enough to fit in your palm (3.2 x 1.5 x 1.1 inches) and weighing just 4.1 ounces
  • Offering up to 5W fast wireless charging
  • Built-in USB-C Cable

Editor's Notes

Written by qwikwit | Staff
  • About this Deal:
  • About this Product:
    • 3 Year INIU Care Warranty
    • Rated 4.5 out of 5 stars at Amazon based on over 260 customer reviews.
  • About this Store:

Original Post

Written by phoinix | Staff

Community Voting

Deal Score
+44
Good Deal
Get Deal at Amazon

Price Intelligence

Model: INIU 3-in-1 Portable Charger, Small 5000mAh Power Bank with Built-in USB C Cable and Watch Charger, 20W PD Fast Charging Battery Pack, Travel Charger for iPhone 16 15, Apple Watch, etc

Deal History 

Sale Price
Slickdeal
  • $NaN
$11
  • Today

Current Prices

Sort: Lowest to Highest | Last Updated 10/13/2025, 07:23 AM
Sold By Sale Price
Amazon$22

Leave a Comment

Unregistered (You)

Top Comments

Davidhh
2176 Posts
599 Reputation
Super convenient small size for carrying in a pocket. Does fast PD charging. However, I'm not sure it carries as much charge as it claims. The percentage goes down pretty quickly as you're charging your phone. But overall, I'm happy with it.
StrongGazelle9261
7 Posts
14 Reputation
If you look at the bad reviews, you can really see a bunch of people giving their opinions on things they don't understand.
Many people are complaining that this does not actually have 5000mAh because it doesn't fully charge their phone that only has around 4000mAh.
First of all, almost all battery manufacturers provide a mAh rating based on the nominal voltage of a lithium ion cell, 3.6-3.7v. 5000mAh at 3.6v is 18Wh. The thing is, your phone doesn't charge at nominal voltage, it charges at 5v or more depending on how the power bank provides the power. Most iPhones and Androids charge at 18 watts or more these days. Mathematically, that 5000mAh capacity becomes 3600mAh when charging at 5v, and 1500mAh when charging at 12v.
Watt-hours = Ah * voltage. You can figure out the general capacity at each voltage if you know what voltage your phone is charging at. The power bank itself even lists that at 5v, the true capacity is around 3100mAh instead of the 3600mAh we calculated earlier because they account for energy loss. Charging from one battery to another is going to experience energy loss in the form of heat.

Unfortunately though, I don't believe you can select the wattage at which you charge your phone. Most modern phones these days charge at 18w or higher, which means the voltage will be higher and the battery will drain fast. This thing will most likely only give a battery boost to a phone and likely will struggle to charge a phone from 0-100%. The power bank is still immensely useful due to its size. It's small enough to bring with you in a pocket, day bag, or purse. This is not something you bring with you for a multi day adventure. This thing will likely give your phone another 80% of charge. If you need more than 180% of phone battery and you cannot find an outlet within 24 hours, you should either replace the battery in your phone or bring the right size power bank for your multi-day adventure. This size is more than enough for day trips. Bringing a bigger battery that can charge your phone multiple times is just going to weigh significantly more for no reason at all. It's like bringing a 5 gallon water jug to run errands. You are not going to use it all before you get home and all that extra just weighs you down.
Tdlr; Iniu is not lying about the capacity. This thing is meant as a battery boost to your phone. Great for day trips when you need just enough to get to the end of the day where you have an outlet. If you can't get to an outlet in 24 hours, you brought the wrong tool for the job. Due to the laws of physics, a battery of this size will not be able to charge most phones to 100% at 20watts multiple times. Use common sense.

21 Comments

Sign up for a Slickdeals account to remove this ad.

Today 08:04 AM
2,176 Posts
Joined Nov 2005
DavidhhToday 08:04 AM
2,176 Posts

Our community has rated this post as helpful. If you agree, why not thank Davidhh

Super convenient small size for carrying in a pocket. Does fast PD charging. However, I'm not sure it carries as much charge as it claims. The percentage goes down pretty quickly as you're charging your phone. But overall, I'm happy with it.
5
Today 02:29 PM
1,150 Posts
Joined Jun 2010
Sarisin48Today 02:29 PM
1,150 Posts
Funny, my total is coming out different. The regular price for the 49% discount (which is applied) is $26.99. Total comes to $13.76
Today 02:44 PM
3,709 Posts
Joined Mar 2004
crazycoolToday 02:44 PM
3,709 Posts
Quote from Sarisin48 :
Funny, my total is coming out different. The regular price for the 49% discount (which is applied) is $26.99. Total comes to $13.76

Because special price is for prime members only.
Today 03:01 PM
7 Posts
Joined Aug 2025
StrongGazelle9261Today 03:01 PM
7 Posts

Our community has rated this post as helpful. If you agree, why not thank StrongGazelle9261

If you look at the bad reviews, you can really see a bunch of people giving their opinions on things they don't understand.
Many people are complaining that this does not actually have 5000mAh because it doesn't fully charge their phone that only has around 4000mAh.
First of all, almost all battery manufacturers provide a mAh rating based on the nominal voltage of a lithium ion cell, 3.6-3.7v. 5000mAh at 3.6v is 18Wh. The thing is, your phone doesn't charge at nominal voltage, it charges at 5v or more depending on how the power bank provides the power. Most iPhones and Androids charge at 18 watts or more these days. Mathematically, that 5000mAh capacity becomes 3600mAh when charging at 5v, and 1500mAh when charging at 12v.
Watt-hours = Ah * voltage. You can figure out the general capacity at each voltage if you know what voltage your phone is charging at. The power bank itself even lists that at 5v, the true capacity is around 3100mAh instead of the 3600mAh we calculated earlier because they account for energy loss. Charging from one battery to another is going to experience energy loss in the form of heat.

Unfortunately though, I don't believe you can select the wattage at which you charge your phone. Most modern phones these days charge at 18w or higher, which means the voltage will be higher and the battery will drain fast. This thing will most likely only give a battery boost to a phone and likely will struggle to charge a phone from 0-100%. The power bank is still immensely useful due to its size. It's small enough to bring with you in a pocket, day bag, or purse. This is not something you bring with you for a multi day adventure. This thing will likely give your phone another 80% of charge. If you need more than 180% of phone battery and you cannot find an outlet within 24 hours, you should either replace the battery in your phone or bring the right size power bank for your multi-day adventure. This size is more than enough for day trips. Bringing a bigger battery that can charge your phone multiple times is just going to weigh significantly more for no reason at all. It's like bringing a 5 gallon water jug to run errands. You are not going to use it all before you get home and all that extra just weighs you down.
Tdlr; Iniu is not lying about the capacity. This thing is meant as a battery boost to your phone. Great for day trips when you need just enough to get to the end of the day where you have an outlet. If you can't get to an outlet in 24 hours, you brought the wrong tool for the job. Due to the laws of physics, a battery of this size will not be able to charge most phones to 100% at 20watts multiple times. Use common sense.
4
1
Today 03:05 PM
678 Posts
Joined Feb 2017
m0ralityToday 03:05 PM
678 Posts
Nice product. I picked up a few as stocking stuffers last time they were on sale.
Today 03:21 PM
1,205 Posts
Joined Jun 2008
skeleton516Today 03:21 PM
1,205 Posts
Quote from StrongGazelle9261 :
If you look at the bad reviews, you can really see a bunch of people giving their opinions on things they don't understand.
Many people are complaining that this does not actually have 5000mAh because it doesn't fully charge their phone that only has around 4000mAh.
First of all, almost all battery manufacturers provide a mAh rating based on the nominal voltage of a lithium ion cell, 3.6-3.7v. 5000mAh at 3.6v is 18Wh. The thing is, your phone doesn't charge at nominal voltage, it charges at 5v or more depending on how the power bank provides the power. Most iPhones and Androids charge at 18 watts or more these days. Mathematically, that 5000mAh capacity becomes 3600mAh when charging at 5v, and 1500mAh when charging at 12v.
Watt-hours = Ah * voltage. You can figure out the general capacity at each voltage if you know what voltage your phone is charging at. The power bank itself even lists that at 5v, the true capacity is around 3100mAh instead of the 3600mAh we calculated earlier because they account for energy loss. Charging from one battery to another is going to experience energy loss in the form of heat.

Unfortunately though, I don't believe you can select the wattage at which you charge your phone. Most modern phones these days charge at 18w or higher, which means the voltage will be higher and the battery will drain fast. This thing will most likely only give a battery boost to a phone and likely will struggle to charge a phone from 0-100%. The power bank is still immensely useful due to its size. It's small enough to bring with you in a pocket, day bag, or purse. This is not something you bring with you for a multi day adventure. This thing will likely give your phone another 80% of charge. If you need more than 180% of phone battery and you cannot find an outlet within 24 hours, you should either replace the battery in your phone or bring the right size power bank for your multi-day adventure. This size is more than enough for day trips. Bringing a bigger battery that can charge your phone multiple times is just going to weigh significantly more for no reason at all. It's like bringing a 5 gallon water jug to run errands. You are not going to use it all before you get home and all that extra just weighs you down.
Tdlr; Iniu is not lying about the capacity. This thing is meant as a battery boost to your phone. Great for day trips when you need just enough to get to the end of the day where you have an outlet. If you can't get to an outlet in 24 hours, you brought the wrong tool for the job. Due to the laws of physics, a battery of this size will not be able to charge most phones to 100% at 20watts multiple times. Use common sense.
what if you get a cable that only slow charges at 5v?
Today 03:52 PM
7 Posts
Joined Aug 2025
StrongGazelle9261Today 03:52 PM
7 Posts
Quote from skeleton516 :
what if you get a cable that only slow charges at 5v?
If you can find a USB-C to USB-C cable that doesn't have the Power Delivery protocol, then it should charge at a lower wattage. I've never actually seen one though. If the power bank had a USB-A port on it, then a USB-A to USB-C cable would work as USB-A does not have the pins for power delivery negotiation.
The only potential solution would be very janky. Buy a USB-C (male) to USB-A (female) adapter and plug the C end into the power bank. Then plug a USB-A to USB-C cable to the adapter. It would look something like this:
Power Bank C Port---> C-A (adapter) --->A-C (cable)--- C port on phone.
The adapter and the A-C cable definitely don't have the pins required for negotiation of higher wattages.

Sign up for a Slickdeals account to remove this ad.

Today 03:58 PM
208 Posts
Joined Jan 2013
Dealz4GoldToday 03:58 PM
208 Posts
Will this do fast charging for an Apple Watch?
Today 04:00 PM
528 Posts
Joined Oct 2021
CrimsonRose733Today 04:00 PM
528 Posts
Quote from StrongGazelle9261 :
If you look at the bad reviews, you can really see a bunch of people giving their opinions on things they don't understand.
Many people are complaining that this does not actually have 5000mAh because it doesn't fully charge their phone that only has around 4000mAh.
First of all, almost all battery manufacturers provide a mAh rating based on the nominal voltage of a lithium ion cell, 3.6-3.7v. 5000mAh at 3.6v is 18Wh. The thing is, your phone doesn't charge at nominal voltage, it charges at 5v or more depending on how the power bank provides the power. Most iPhones and Androids charge at 18 watts or more these days. Mathematically, that 5000mAh capacity becomes 3600mAh when charging at 5v, and 1500mAh when charging at 12v.
Watt-hours = Ah * voltage. You can figure out the general capacity at each voltage if you know what voltage your phone is charging at. The power bank itself even lists that at 5v, the true capacity is around 3100mAh instead of the 3600mAh we calculated earlier because they account for energy loss. Charging from one battery to another is going to experience energy loss in the form of heat.

Unfortunately though, I don't believe you can select the wattage at which you charge your phone. Most modern phones these days charge at 18w or higher, which means the voltage will be higher and the battery will drain fast. This thing will most likely only give a battery boost to a phone and likely will struggle to charge a phone from 0-100%. The power bank is still immensely useful due to its size. It's small enough to bring with you in a pocket, day bag, or purse. This is not something you bring with you for a multi day adventure. This thing will likely give your phone another 80% of charge. If you need more than 180% of phone battery and you cannot find an outlet within 24 hours, you should either replace the battery in your phone or bring the right size power bank for your multi-day adventure. This size is more than enough for day trips. Bringing a bigger battery that can charge your phone multiple times is just going to weigh significantly more for no reason at all. It's like bringing a 5 gallon water jug to run errands. You are not going to use it all before you get home and all that extra just weighs you down.
Tdlr; Iniu is not lying about the capacity. This thing is meant as a battery boost to your phone. Great for day trips when you need just enough to get to the end of the day where you have an outlet. If you can't get to an outlet in 24 hours, you brought the wrong tool for the job. Due to the laws of physics, a battery of this size will not be able to charge most phones to 100% at 20watts multiple times. Use common sense.
You forgot the fact that higher voltage means less amps for same draw. The higher the voltage, the lower the amps it needs to draw for the same watts power output. 5V at 3.6A is the same power draw as 9V at 2A for example. Both will draw 18W of power, but the 9V will need 0.55x the Amps to run 18W for an hour. In the end, the actual battery consumed will be the same.

So even if technically the mAh is less for higher voltage, the draw is equivalently lower. 5V will pull 3600 milliAmps in an hour, 9V will pull 2000 mA, and 12V will draw 1500.

Watt hours is a much more useful metric for this reason. Because Watts is the actual power consumed. That's why your power bill is measured in watts and not amps or volts.
1
Pro
Today 04:06 PM
203 Posts
Joined Oct 2021
IndigoRain261
Pro
Today 04:06 PM
203 Posts
Too small
2
Today 04:09 PM
36 Posts
Joined Jan 2019
GreenStove1704Today 04:09 PM
36 Posts
Weird, I'm a Prime customer. When I first opened the link to the product it was showing as $26.99 and a total of $13.76 in my cart, same as someone stated above. I deleted it from my cart, went back to the link and refreshed, and it then showed the item at $22.49 and the correct total with tax for me of $12.23 in my cart.
Today 04:21 PM
654 Posts
Joined Jun 2004
amdaxiomToday 04:21 PM
654 Posts
Oh man, do I need another portable battery charger in my car for those just in case days?
Today 04:44 PM
79 Posts
Joined Jun 2011
xyphanToday 04:44 PM
79 Posts
Quote from Dealz4Gold :
Will this do fast charging for an Apple Watch?
This was why I bought the battery--fantastic for Apple Watch charging. I keep this in my work bag to recharge the watch at my desk as needed, or on road trips. Only uses ~13% of the battery to recharge the watch. It does appear to support the faster charging as well. Cheaper than buying another watch charger and pretty convenient for what it is.
Today 05:04 PM
7 Posts
Joined Aug 2025
StrongGazelle9261Today 05:04 PM
7 Posts
Quote from CrimsonRose733 :
You forgot the fact that higher voltage means less amps for same draw. The higher the voltage, the lower the amps it needs to draw for the same watts power output. 5V at 3.6A is the same power draw as 9V at 2A for example. Both will draw 18W of power, but the 9V will need 0.55x the Amps to run 18W for an hour. In the end, the actual battery consumed will be the same.

So even if technically the mAh is less for higher voltage, the draw is equivalently lower. 5V will pull 3600 milliAmps in an hour, 9V will pull 2000 mA, and 12V will draw 1500.

Watt hours is a much more useful metric for this reason. Because Watts is the actual power consumed. That's why your power bill is measured in watts and not amps or volts.
Agreed. I did the voltage math equation to show how the mAh rating doesn't really mean much, I guess I wasn't very clear about it. Watts and Wh are far more useful because of this reason.
When I said the battery will drain fast because voltage will be higher when charging at 18w, I meant that it will be higher than the 3.6v they used to calculate 5000mAh so that 5000mAh is a fairly useless number. Also, technically, charging at a higher voltage will result in lower capacity due to the inefficiencies of the boost converter.
Still, kind of sucks you cannot choose to charge at a slow 5w (5v 1 amp). The Power Delivery protocol will negotiate a higher wattage no matter what.
1

Sign up for a Slickdeals account to remove this ad.

Today 05:11 PM
1,150 Posts
Joined Jun 2010
Sarisin48Today 05:11 PM
1,150 Posts
Quote from crazycool :


Because special price is for prime members only.
I am a Prime Member

Leave a Comment

Unregistered (You)

Popular Deals

View All

Trending Deals

View All