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frontpageiconian | Staff posted Yesterday 03:17 PM
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frontpageiconian | Staff posted Yesterday 03:17 PM

GENDOME 15000mAh 22.5W LiFePO4 QC3.0 & PD3.0 + Wireless Charging for Apple Watch

$18

$70

74% off
Amazon
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Deal Details
Amazon has GENDOME 15000mAh 22.5W LiFePO4 QC3.0 & PD3.0 + Wireless Charging for Apple Watch on sale for $18. Shipping is free with Prime or on $35+ orders.

Thanks to Deal Editor iconian for finding this deal.

About this item:
  • LiFePO4 Battery: Up to 3,000 charge/discharge cycles for ~10 years of use.
  • High Capacity: 15,000mAh (3.2V/48Wh); rated 8,000mAh (5V/3A) after voltage conversion.
  • Fast Charging: Supports QC3.0 and PD3.0; up to 22.5W charging speed.
  • Apple Watch Wireless Charging: Built-in pad eliminates the need for an extra charger, great for travel.
  • Dual Charging Options: Can be charged via USB or solar panel, ideal for camping and outdoor use.
  • Universal Compatibility:
    • USB-C input/output
    • Extra USB-C output
    • USB-A port
    • Wireless charging pad for Apple Watch

Editor's Notes

Written by persian_mafia | Staff
  • About this deal:
    • Please see the original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.
  • About this store:

Original Post

Written by iconian | Staff
Product Info
Community Notes
About the Poster
Deal Details
Product Info
Community Notes
About the Poster
Amazon has GENDOME 15000mAh 22.5W LiFePO4 QC3.0 & PD3.0 + Wireless Charging for Apple Watch on sale for $18. Shipping is free with Prime or on $35+ orders.

Thanks to Deal Editor iconian for finding this deal.

About this item:
  • LiFePO4 Battery: Up to 3,000 charge/discharge cycles for ~10 years of use.
  • High Capacity: 15,000mAh (3.2V/48Wh); rated 8,000mAh (5V/3A) after voltage conversion.
  • Fast Charging: Supports QC3.0 and PD3.0; up to 22.5W charging speed.
  • Apple Watch Wireless Charging: Built-in pad eliminates the need for an extra charger, great for travel.
  • Dual Charging Options: Can be charged via USB or solar panel, ideal for camping and outdoor use.
  • Universal Compatibility:
    • USB-C input/output
    • Extra USB-C output
    • USB-A port
    • Wireless charging pad for Apple Watch

Editor's Notes

Written by persian_mafia | Staff
  • About this deal:
    • Please see the original post for additional details & give the WIKI and additional forum comments a read for helpful discussion.
  • About this store:

Original Post

Written by iconian | Staff

Community Voting

Deal Score
+29
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Price Intelligence

Model: GENDOME Portable Charger LiFePO4 Battery, QC3.0 & PD3.0 22.5W Fast Charging, 15000mAh Portable Power Bank Built in USB C Cable, Travel Essential Backup Battery with USB-C in/Output

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Sort: Lowest to Highest | Last Updated 7/29/2025, 01:01 AM
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Amazon$18

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Top Comments

rockydbull
3029 Posts
671 Reputation
In Product description:

Large battery capacity 15000mAh (3.2V/48Wh) charge your phone up to 3 times, making it perfect for extended use on the go. Rated capacity 8000mAh (5V/3A). (When the voltage changes from 3.2V to 5V, the battery capacity loss is 20%)

This conversion is also true of lithium ion at 3.7v. All power banks that run on lithium ion advertise their capacity at 3.7v.
fithos
2620 Posts
377 Reputation
That's because most people don't understand mah ratings. They see a mah number on their power meter and it doesn't match what is listed on the battery device they are testing and they claim fraud. For capacity of a battery you need to know both MAH and VOLTAGE.
The power bank probably is as they cliam a 15000 mah battery.

26 Comments

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Yesterday 03:47 PM
332 Posts
Joined Jan 2014
Yesterday 03:47 PM
ChopokLYesterday 03:47 PM
332 Posts
Has anyone experienced this brand?
1
Yesterday 06:45 PM
2,448 Posts
Joined Apr 2013
Yesterday 06:45 PM
mja28Yesterday 06:45 PM
2,448 Posts
LFP? this is something nice to see now. hopefully a lot of companies will follow.
1
Yesterday 06:46 PM
860 Posts
Joined Jan 2010
Yesterday 06:46 PM
timpYesterday 06:46 PM
860 Posts
I like it. Would pick one up if I didn't already have an old model like this with microUSB which still works. Hate microusb, but I'll wait until it dies or until it gets lost.
1
Yesterday 06:48 PM
134 Posts
Joined Oct 2021
Yesterday 06:48 PM
WiseRecess9745Yesterday 06:48 PM
134 Posts

Our community has rated this post as helpful. If you agree, why not thank WiseRecess9745

doesn't look like it would really be 15k. one review states only getting 8k mAh. I am guessing the numbers are all inflated. otherwise looks good.
2
Yesterday 06:52 PM
5 Posts
Joined Jul 2025
Yesterday 06:52 PM
LavenderWren3996Yesterday 06:52 PM
5 Posts
Ok stupid question. My travel charger is alot smaller why would someone buy something like this. I mean it's bulky for travel and a plug in charger is more efficient smaller as well.
2
Yesterday 06:59 PM
94 Posts
Joined Aug 2007
Yesterday 06:59 PM
CoolcaminoYesterday 06:59 PM
94 Posts
I bought two. Lifepo is a huge improvement over lithium in almost all areas
1
Yesterday 06:59 PM
3,029 Posts
Joined Nov 2009
Yesterday 06:59 PM
rockydbullYesterday 06:59 PM
3,029 Posts
Quote from LavenderWren3996 :
Ok stupid question. My travel charger is alot smaller why would someone buy something like this. I mean it's bulky for travel and a plug in charger is more efficient smaller as well.
This logic extends to literally any powerbank. Why buy a powerbank if your phone charger is smaller?
1

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Yesterday 07:01 PM
3,029 Posts
Joined Nov 2009
Yesterday 07:01 PM
rockydbullYesterday 07:01 PM
3,029 Posts

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

Quote from WiseRecess9745 :
doesn't look like it would really be 15k. one review states only getting 8k mAh. I am guessing the numbers are all inflated. otherwise looks good.
In Product description:

Large battery capacity 15000mAh (3.2V/48Wh) charge your phone up to 3 times, making it perfect for extended use on the go. Rated capacity 8000mAh (5V/3A). (When the voltage changes from 3.2V to 5V, the battery capacity loss is 20%)

This conversion is also true of lithium ion at 3.7v. All power banks that run on lithium ion advertise their capacity at 3.7v.
2
Yesterday 07:07 PM
209 Posts
Joined Jul 2013
Yesterday 07:07 PM
CCNinjaYesterday 07:07 PM
209 Posts
Quote from ChopokL :
Has anyone experienced this brand?
Gendome is the B2C branch of Gotion. They manufacture lithium-ion batteries for EV and storage systems. This is a pretty good deal for a LFP charger.
1
Yesterday 07:12 PM
2,620 Posts
Joined Jan 2009
Yesterday 07:12 PM
fithosYesterday 07:12 PM
2,620 Posts
Quote from WiseRecess9745 :
doesn't look like it would really be 15k. one review states only getting 8k mAh. I am guessing the numbers are all inflated. otherwise looks good.
That's because most people don't understand mah ratings. They see a mah number on their power meter and it doesn't match what is listed on the battery device they are testing and they claim fraud. For capacity of a battery you need to know both MAH and VOLTAGE.
The power bank probably is as they cliam a 15000 mah battery.
Yesterday 07:17 PM
93 Posts
Joined Oct 2007
Yesterday 07:17 PM
DaKahunaYesterday 07:17 PM
93 Posts
Quote from LavenderWren3996 :
Ok stupid question. My travel charger is alot smaller why would someone buy something like this. I mean it's bulky for travel and a plug in charger is more efficient smaller as well.
One thing is that it uses LiFePO4 batteries. Less energy dense than regular lithium ion, but also a lot safer (less risk of fire etc) and can be cycled thousands of times. Basically you could fully cycle this every day for 8 years and the batteries should still hold 80%+ capacity to when they were new. Where lithium ion batteries could be wiped out in a year doing that.

Obviously doesn't mean the rest of the electronics would last that long, but the battery could if treated decently.
Yesterday 08:08 PM
154 Posts
Joined May 2017
Yesterday 08:08 PM
makaveliartsYesterday 08:08 PM
154 Posts
This seems like an actually decent deal
Original Poster
Pro
Sr. Deal Editor
Yesterday 08:22 PM
74,242 Posts
Joined Feb 2006
Yesterday 08:22 PM
iconianYesterday 08:22 PM
Original Poster
Pro
Sr. Deal Editor
74,242 Posts
Quote from rockydbull :
In Product description:

Large battery capacity 15000mAh (3.2V/48Wh) charge your phone up to 3 times, making it perfect for extended use on the go. Rated capacity 8000mAh (5V/3A). (When the voltage changes from 3.2V to 5V, the battery capacity loss is 20%)

This conversion is also true of lithium ion at 3.7v. All power banks that run on lithium ion advertise their capacity at 3.7v.

they are the first company that makes USB power banks that has that distinction, so it's very nice to see
Yesterday 08:26 PM
68 Posts
Joined May 2014
Yesterday 08:26 PM
nirmalspeedYesterday 08:26 PM
68 Posts
Quote from LavenderWren3996 :
Ok stupid question. My travel charger is alot smaller why would someone buy something like this. I mean it's bulky for travel and a plug in charger is more efficient smaller as well.
It's for when you're traveling and know you won't have a wall outlet to charge your phone. This one also has 22.5W PD (power delivery) which means you can also charge a modern USB C laptop with it. Though if you're using your laptop while charging it with this, the battery might still drain, albeit a bit slower, since laptops can use more power under heavy load than what this can charge it with. If you have a macbook air or something super low power, this will probably be fine though.

ex: I don't use my battery bank unless I'm flying somewhere and don't want to deal with finding a seat that's also next to an outlet. With a battery bank, you can just plop down wherever you want and still charge your phone.

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Yesterday 10:31 PM
45 Posts
Joined Oct 2022
Yesterday 10:31 PM
lionliesYesterday 10:31 PM
45 Posts
In case someone here is visiting China, start from 06/28/2025, power banks not CCC certified are not allowed to be carried on a domestic flight in China. Seems like this one doesn't have CCC (according to Amazon product video showing on -29s), but it has FCC and CE, should be good enough otherwise.
1

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