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Red_Liz | Staff 17K Views
Oct 28, 2025 2:10 PM

256Wh Anker 521 PowerHouse LiFePO4 Portable Power Station w/ 6-Ports

$129

$200

35% off
+ Free Shippingat Amazon
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Deal Details
Anker Direct via Amazon has 256Wh Anker 521 PowerHouse LiFePO4 Portable Power Station (A1720) on sale for $149.99 - automatic 14% ($21) off  discount applied on the final checkout page = $128.99. Shipping is free.

Thanks to Staff Member Red_Liz for finding this deal.

Product Details:
  • Battery Pack Rated Capacity: 12.8V/20000mAh 256Wh
  • AC Surge Power: 450W
  • USB-C Input: 5V⎓3A/ 9V⎓3A/ 15V⎓3A/20V⎓3A/(60W Max)
  • USB-C Output: 5V⎓3A/ 9V⎓3A/ 15V⎓3A/20V⎓3A/(60W Max)
  • AC Output: 110V~ 1.82A, 50Hz/60Hz, 200W
  • USB-A Output: 5V⎓3.6A (2.4A Max Per Port)
  • Car Charger Output: 12V⎓10A
  • 5-Year Full-Device Warranty
  • Ports:
    • 2x AC ports
    • 2x USB-A ports
    • 1x USB-C port
    • 1x Car outlet

Editor's Notes

Written by RevOne | Staff
  • About this deal:
    • This offer beats our last Frontpage Deal for this item from May 2023 by $60. 
    • Our research indicates that this offer is $60 lower (14% savings) than the next best available price from a reputable merchant with prices starting from $149.99.
    • 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 Red_Liz | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Anker Direct via Amazon has 256Wh Anker 521 PowerHouse LiFePO4 Portable Power Station (A1720) on sale for $149.99 - automatic 14% ($21) off  discount applied on the final checkout page = $128.99. Shipping is free.

Thanks to Staff Member Red_Liz for finding this deal.

Product Details:
  • Battery Pack Rated Capacity: 12.8V/20000mAh 256Wh
  • AC Surge Power: 450W
  • USB-C Input: 5V⎓3A/ 9V⎓3A/ 15V⎓3A/20V⎓3A/(60W Max)
  • USB-C Output: 5V⎓3A/ 9V⎓3A/ 15V⎓3A/20V⎓3A/(60W Max)
  • AC Output: 110V~ 1.82A, 50Hz/60Hz, 200W
  • USB-A Output: 5V⎓3.6A (2.4A Max Per Port)
  • Car Charger Output: 12V⎓10A
  • 5-Year Full-Device Warranty
  • Ports:
    • 2x AC ports
    • 2x USB-A ports
    • 1x USB-C port
    • 1x Car outlet

Editor's Notes

Written by RevOne | Staff
  • About this deal:
    • This offer beats our last Frontpage Deal for this item from May 2023 by $60. 
    • Our research indicates that this offer is $60 lower (14% savings) than the next best available price from a reputable merchant with prices starting from $149.99.
    • 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 Red_Liz | Staff

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Top Comments

GTwannabe
481Comments
76Reputation
I usually like Anker products but these battery banks are junk. Bought a few for work and they all developed charging problems. As in shut off prematurely with 0% battery then you plug it in and the indicated charge level shoots to 100% in about 10 seconds.
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18 Comments

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Oct 28, 2025 5:09 PM
3 Comments
Joined Jan 2023
LiquorMan503Oct 28, 2025 5:09 PM
3 Comments
Decent price at $130. This will work as a UPS to connect your modem/router and a laptop/monitor and run for hours during intermitent power losses. Even during a power outage you can keep your employer happy by continuing to work(hooray?)
2
Oct 28, 2025 5:53 PM
62 Comments
Joined Sep 2018
ratiostrainOct 28, 2025 5:53 PM
62 Comments
Quote from LiquorMan503 View quoted comment :
Decent price at $130. This will work as a UPS to connect your modem/router and a laptop/monitor and run for hours during intermitent power losses. Even during a power outage you can keep your employer happy by continuing to work(hooray?)
It will work as a UPS? That's just what I have in mind. Is there any clue, on this Amazon site, where I can confirm the UPS ability?
Oct 28, 2025 7:03 PM
143 Comments
Joined Feb 2009
HangerOct 28, 2025 7:03 PM
143 Comments
Quote from ratiostrain View quoted comment :
It will work as a UPS? That's just what I have in mind. Is there any clue, on this Amazon site, where I can confirm the UPS ability?
Looks like it was asked and answered on the Amazon page

https://www.amazon.com/ask/questi...L1UB37K41/
Oct 30, 2025 1:07 AM
107 Comments
Joined Feb 2014
palashbariOct 30, 2025 1:07 AM
107 Comments
Quote from Hanger View quoted comment :

Looks like it was asked and answered on the Amazon page

https://www.amazon.com/ask/questi...L1UB37K41/
The 3rd answer says it didn't work as a UPS
Oct 30, 2025 2:40 AM
481 Comments
Joined Feb 2004
GTwannabeOct 30, 2025 2:40 AM
481 Comments

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

I usually like Anker products but these battery banks are junk. Bought a few for work and they all developed charging problems. As in shut off prematurely with 0% battery then you plug it in and the indicated charge level shoots to 100% in about 10 seconds.
3
Oct 30, 2025 1:25 PM
3.6K Comments
Joined Apr 2005
joebob2000Oct 30, 2025 1:25 PM
3.6K Comments
Quote from palashbari View quoted comment :
The 3rd answer says it didn't work as a UPS
There are two big caveats to using it "as a ups". First is, does the input source have the wattage to keep the output running? In this unit the max input is 65w, so you cant use more than 65w on the output side without drawing from the battery. Keep it under that, and it will only draw from the battery when the AC power goes out. Second issue, they have no 'restart' functionality, meaning if it does switch to battery, and the battery drains, it will not reactivate the output after the power is restored. For setups at home this is often not an issue, but if its for example a vacation home that you will be away from months at a time and it experiences long outages, you will end up with an offline device and need to physically restart it.
1
Oct 30, 2025 4:27 PM
12 Comments
Joined Feb 2018
Logicbroker445Oct 30, 2025 4:27 PM
12 Comments
Quote from joebob2000 View quoted comment :
There are two big caveats to using it "as a ups". First is, does the input source have the wattage to keep the output running? In this unit the max input is 65w, so you cant use more than 65w on the output side without drawing from the battery. Keep it under that, and it will only draw from the battery when the AC power goes out. Second issue, they have no 'restart' functionality, meaning if it does switch to battery, and the battery drains, it will not reactivate the output after the power is restored. For setups at home this is often not an issue, but if its for example a vacation home that you will be away from months at a time and it experiences long outages, you will end up with an offline device and need to physically restart it.
I wouldn't buy this, but the input power is not 65 watts, that doesn't make sense.

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Nov 1, 2025 12:34 AM
523 Comments
Joined Apr 2013
tony424Nov 1, 2025 12:34 AM
523 Comments
Quote from joebob2000 View quoted comment :
There are two big caveats to using it "as a ups". First is, does the input source have the wattage to keep the output running? In this unit the max input is 65w, so you cant use more than 65w on the output side without drawing from the battery. Keep it under that, and it will only draw from the battery when the AC power goes out. Second issue, they have no 'restart' functionality, meaning if it does switch to battery, and the battery drains, it will not reactivate the output after the power is restored. For setups at home this is often not an issue, but if its for example a vacation home that you will be away from months at a time and it experiences long outages, you will end up with an offline device and need to physically restart it.
Thanks for sharing. I really need something that can address the "second issue" — could you recommend any products that will work? Thanks!
Nov 3, 2025 5:14 PM
30 Comments
Joined Feb 2014
memphischuckNov 3, 2025 5:14 PM
30 Comments
I'd get the C300dc deal from Costco unless you absolutely have to have the ac inverter. Much better and smaller unit with WiFi so you can monitor it remotely with the app
Nov 3, 2025 5:46 PM
3.6K Comments
Joined Apr 2005
joebob2000Nov 3, 2025 5:46 PM
3.6K Comments
Quote from tony424 View quoted comment :
Thanks for sharing. I really need something that can address the "second issue" — could you recommend any products that will work? Thanks!
Bluetti has a feature called "power memory mode" that does this, you can check out those models if thats a must-have.
Nov 4, 2025 3:01 AM
523 Comments
Joined Apr 2013
tony424Nov 4, 2025 3:01 AM
523 Comments
Quote from joebob2000 View quoted comment :
Bluetti has a feature called "power memory mode" that does this, you can check out those models if thats a must-have.
Thank you for sharing.
It seems the ups feature of "bluetti apex 300" has 0ms delay time.
Nov 5, 2025 6:12 PM
733 Comments
Joined Nov 2012
jordanb9095Nov 5, 2025 6:12 PM
733 Comments
i've been shopping for these and the best deal on amazon right now is the ehom ep350. $135, 299Wh, pure sine wave, lifepo4 battery, eps/ups system built in (not 0ms). its not name brand like anker but has good reviews.
1
Nov 5, 2025 7:58 PM
271 Comments
Joined Dec 2015
banch0ngNov 5, 2025 7:58 PM
271 Comments
Quote from jordanb9095 View quoted comment :
i've been shopping for these and the best deal on amazon right now is the ehom ep350. $135, 299Wh, pure sine wave, lifepo4 battery, eps/ups system built in (not 0ms). its not name brand like anker but has good reviews.
I've had this one for a few months now and it's working good. A little heavy but for the price its great and has some good functions
Nov 5, 2025 8:09 PM
76 Comments
Joined Jul 2005
Wha?Where?Nov 5, 2025 8:09 PM
76 Comments
If you need a UPS, just get a UPS.
1

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Nov 5, 2025 11:07 PM
3.2K Comments
Joined Aug 2013
gwiteNov 5, 2025 11:07 PM
3.2K Comments
Wonder why it's a "frequently returned item"?

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