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frontpagegooddealforenergy posted Sep 12, 2025 05:08 AM
frontpagegooddealforenergy posted Sep 12, 2025 05:08 AM

Costco Members: Anker SOLIX C300X 288Wh DC Portable Power Station + 100W Charger

+ Free Shipping

$160

Costco Wholesale
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Deal Details
Costco Wholesale has for its Members: Anker SOLIX C300X 288Wh DC LFP Portable Power Station (SOLIX-28-PS) + 100W Fast Charger on sale for $159.99. Shipping is free.

Thanks to Community Member gooddealforenergy for finding this deal.

Note: Non-Members may purchase but are subject to a 5% surcharge.

Features:
  • Keep all your essentials charged on the go, while camping, or even for backup power. This power bank station features 300W of total output and seven outlets, including two 140W input/output ports.
  • C300X DC features versatile ports for any type of device. Power up with a 120W car socket, two 140W USB-C ports, one 100W USB-C port, one 15W USB-C port, and two 12W USB-A ports.
  • Using paired bonus 100W charger, with exclusive ActiveShield safety technology, delivers 100W output, pumps out enough power to charge your C300X DC to 80% in 2.5 hours, so you can stay productive and fuel-up all day.
  • Carrying C300X DC by the handle, this travel-friendly power bank station is 30% smaller than other brands for accessible off-grid power.
  • Stay powered wherever you are, on adventures or at home. C300X DC has an extendable built-in light for power at night, perfect for camping or outages.
  • Connect two 140W USB-C cables (280W total) to recharge to 100% in 1.5 hours. Plug in solar panels or the included bonus 100W charger for a full recharge in less than 3.2 hours.
  • Give your devices and C300X DC a quick boost at home, on the road, or in nature. The power bank station's two-way USB-C port delivers 140W to your devices while also recharging itself.
  • This power bank station features LFP batteries rated for 3,000 cycles, ultra-durable electronics, temperature monitoring up to 100 times per second, and an impact-resistant structural design.

Editor's Notes

Written by powerfuldoppler | Staff
  • About this deal:
  • About this product:
    • This power station is rated 4.6 out of 5 stars based on over 1300 Amazon customer reviews.
    • Includes a 3-year warranty.
    • Please see the original post for additional details and/or view the Wiki and forum comments for further helpful discussion if available.
  • About this store:
    • If you don't have a Costco Warehouse Membership, you can sign-up here.

Original Post

Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Costco Wholesale has for its Members: Anker SOLIX C300X 288Wh DC LFP Portable Power Station (SOLIX-28-PS) + 100W Fast Charger on sale for $159.99. Shipping is free.

Thanks to Community Member gooddealforenergy for finding this deal.

Note: Non-Members may purchase but are subject to a 5% surcharge.

Features:
  • Keep all your essentials charged on the go, while camping, or even for backup power. This power bank station features 300W of total output and seven outlets, including two 140W input/output ports.
  • C300X DC features versatile ports for any type of device. Power up with a 120W car socket, two 140W USB-C ports, one 100W USB-C port, one 15W USB-C port, and two 12W USB-A ports.
  • Using paired bonus 100W charger, with exclusive ActiveShield safety technology, delivers 100W output, pumps out enough power to charge your C300X DC to 80% in 2.5 hours, so you can stay productive and fuel-up all day.
  • Carrying C300X DC by the handle, this travel-friendly power bank station is 30% smaller than other brands for accessible off-grid power.
  • Stay powered wherever you are, on adventures or at home. C300X DC has an extendable built-in light for power at night, perfect for camping or outages.
  • Connect two 140W USB-C cables (280W total) to recharge to 100% in 1.5 hours. Plug in solar panels or the included bonus 100W charger for a full recharge in less than 3.2 hours.
  • Give your devices and C300X DC a quick boost at home, on the road, or in nature. The power bank station's two-way USB-C port delivers 140W to your devices while also recharging itself.
  • This power bank station features LFP batteries rated for 3,000 cycles, ultra-durable electronics, temperature monitoring up to 100 times per second, and an impact-resistant structural design.

Editor's Notes

Written by powerfuldoppler | Staff
  • About this deal:
  • About this product:
    • This power station is rated 4.6 out of 5 stars based on over 1300 Amazon customer reviews.
    • Includes a 3-year warranty.
    • Please see the original post for additional details and/or view the Wiki and forum comments for further helpful discussion if available.
  • About this store:
    • If you don't have a Costco Warehouse Membership, you can sign-up here.

Original Post

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Top Comments

slow_hachiroku
61 Posts
164 Reputation
It's not weird behavior, it's a feature to save power, it charges earbuds and low power devices fine and cuts power when done. This doesn't have a ups switchover so idk why anyone would think this DC only (no AC plug) powerststion could be used that way.

And zero security is fake news. The button on the top left allows you to disable BT and save a little power. Similarly sized Ecoflow units don't have this capability.

I have this and think this form factor is ideal. No AC inverter makes it very efficient to top off electronics. I'll even use it to charge my larger AC powerbanks to give them longer runtime.

30 Comments

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Sep 13, 2025 01:59 AM
310 Posts
Joined Oct 2013
Ultra1337Sep 13, 2025 01:59 AM
310 Posts
Quote from jongasse :
You can buy the "Hyper Tough 20V Power Inverter 150-Watt, 3-USB Ports" for $45 - $55 depending on which version Walmart has it in store any day and slap on a 21v battery. It's a fantastic piece of hardware and has PD, PPS - everything this has with the benefit that you can actually change the battery anytime. It's your choice what the battery will be.

Temu has the same Inverter for half the price. There are even cheaper and more powerful setups you can do for the same price. The current best is an EcoWorthy bundle that's 5x the capacity with a 1kW pure sinewave inverter for the same price.

The only reason to get this $100+ item is you don't have to do any of this work, it's all done for you and if the unit fails, either Anker or costco will, hopefully help.

Your example has a single usb c port with a 65 watt max input and output, no 12 volt out, and no solar charge port (xt60i). This thing has 4 usb c, with 2 having 140w output and 288 Wh of LiFePO4 batteries rated for thousands of charge cycles.

Can you show me some combination of parts in a list that can actually compete with this on price, even if a lot of them are generic? cause I buy a lot of this stuff individually and i cant
Last edited by Ultra1337 September 12, 2025 at 08:02 PM.
Pro
Sep 13, 2025 05:35 AM
1,727 Posts
Joined Feb 2011
jongasse
Pro
Sep 13, 2025 05:35 AM
1,727 Posts
12 volt out comes from USB-C, upto 5A using a $2 USB protocol board. If you want the cigar lighter socket, patch that in.

Yes, there's no solar charge port but if you need that to feed 12v in, again, a $2 USB protocol board.

288 Wh of LiFePO4 batteries: No idea what the chemistry of the recycled Lion batteries on eBay are, but 288 Wh is 21v@14Ah. I am in California where gas powered tools have been outlawed and we are drowning in batteries. Every garage sale has batteries to be recycled. If you're lazy, you can go to BestBuy, look into the recycling bin outside the store and pick away. If you're even more lazy, you can go to any store and purchase power tool batteries on sale. There's a $50 blower on Amazon on sale right now listed on slickdeals that come with a pair of 21v@10Ah batteries.

As I said, you have to put this all together and if the point you're making is that this is all done for you, tested etc, sure, I get it. Buy it, enjoy it but most people are going to use this for very specific purposes like charge their phones or laptops and for that I already mentioned much more affordable options.
Last edited by jongasse September 12, 2025 at 11:38 PM.
4
Sep 13, 2025 06:44 PM
1,516 Posts
Joined Aug 2011
a_landSep 13, 2025 06:44 PM
1,516 Posts
Battery freaks are my favorite Slickdeals sub genre of poster lol
1
Sep 13, 2025 08:24 PM
2,785 Posts
Joined May 2018
TimlessSep 13, 2025 08:24 PM
2,785 Posts
Quote from jongasse :
Quote from slow_hachiroku :
It's not weird behavior, it's a feature to save power, it charges earbuds and low power devices fine and cuts power when done. This doesn't have a ups switchover so idk why anyone would think this DC only (no AC plug) powerststion could be used that way.
That behavior might make sense to you but it doesn't to others and just because a behavior doesn't make sense doesn't mean others are wrong.

because they have to have current monitoring to enable this behavior, a good design should allow the user to toggle this behavior on or off.

So at best, this is a poor design.

That said, this poor design is unfortunately prevalent in the DC powerbank industry which is why people like us have to build "dummy" loads to maintain the current above the threshold.

There are many reasons why someone would like to do this.

One reason is to keep a set of security cameras powered on in the case of an outage or burglars turning off power to the house. Security cameras are very power efficient nowadays.
Get a dedicated ups?
Sep 14, 2025 12:38 AM
1,443 Posts
Joined Dec 2006
GeorgeMcFlySep 14, 2025 12:38 AM
1,443 Posts
Quote from jongasse :
Looking at how costco has become aggressive against their customers in 2025..
what's your context/meaning here? is Costco starting to refuse returns now?
Pro
Sep 14, 2025 03:24 AM
1,727 Posts
Joined Feb 2011
jongasse
Pro
Sep 14, 2025 03:24 AM
1,727 Posts
Quote from Timless :
Get a dedicated ups?
dedicated ups for a USB powered WiFi security camera?
Sep 14, 2025 03:55 AM
2,785 Posts
Joined May 2018
TimlessSep 14, 2025 03:55 AM
2,785 Posts
Quote from jongasse :
Quote from Timless :
Get a dedicated ups?
dedicated ups for a USB powered WiFi security camera?
Yea.
uninterruptible power supply

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Sep 14, 2025 08:33 AM
627 Posts
Joined Jan 2008
menxSep 14, 2025 08:33 AM
627 Posts
Could I use this to power a TV?
Pro
Sep 14, 2025 06:50 PM
1,727 Posts
Joined Feb 2011
jongasse
Pro
Sep 14, 2025 06:50 PM
1,727 Posts
Quote from menx :
Could I use this to power a TV?
Depends. Do you either have an inverter or does the TV take in DC In?

This isn't what most people think they are buying shake head
1
Sep 15, 2025 04:20 PM
202 Posts
Joined Mar 2018
bradymartinSep 15, 2025 04:20 PM
202 Posts
its $140 at bestbuy now but still this includes the wall charger
Sep 16, 2025 03:31 AM
83 Posts
Joined Jan 2015
AussieholeSep 16, 2025 03:31 AM
83 Posts
Quote from IvanI8853 :
I have one of these and absolutely love it. It's great to keep my stuff charged on camping trips, and it can power a little car fridge for the better part of the day. Plus, as for portable power station batteries, it is EXCEPETIONALLY tiny, which is nice. Just be aware that this is not designed to be an enormous powerhouse with a never-ending supply of juice to keep your entire world running, and understand its limitations. For me, it is fantastic.
Im looking at this for my fridge. How has it done with a 12v fridge?
Sep 16, 2025 04:55 AM
179 Posts
Joined Sep 2019
jobe24Sep 16, 2025 04:55 AM
179 Posts
did costco just start selling this ? interested but may wait for a price drop like the river 3 plus that went down to 199 shortly after they started selling it
Sep 17, 2025 04:58 PM
3,288 Posts
Joined Aug 2004
smithmalSep 17, 2025 04:58 PM
3,288 Posts
Quote from jongasse :
12 volt out comes from USB-C, upto 5A using a $2 USB protocol board. If you want the cigar lighter socket, patch that in.

Yes, there's no solar charge port but if you need that to feed 12v in, again, a $2 USB protocol board.

288 Wh of LiFePO4 batteries: No idea what the chemistry of the recycled Lion batteries on eBay are, but 288 Wh is 21v@14Ah. I am in California where gas powered tools have been outlawed and we are drowning in batteries. Every garage sale has batteries to be recycled. If you're lazy, you can go to BestBuy, look into the recycling bin outside the store and pick away. If you're even more lazy, you can go to any store and purchase power tool batteries on sale. There's a $50 blower on Amazon on sale right now listed on slickdeals that come with a pair of 21v@10Ah batteries.

As I said, you have to put this all together and if the point you're making is that this is all done for you, tested etc, sure, I get it. Buy it, enjoy it but most people are going to use this for very specific purposes like charge their phones or laptops and for that I already mentioned much more affordable options.
Nice reply.

Your end statement is crucial which is for $150 what are you going to use this for? The only reason I could see shelving out $150 is if I need a DC power supply in a remote location and I will be in that location for a long period of time so having a solar panel for recharge would be a necessity. In that situation I could see this being worth the money vs. just getting a standard battery pack. That is probably a VERY NICHE group of consumers.

Personally I have a good deal of tool batteries that I've invested in. You can purchase a battery inverter adapter that can use your tool battery as a power source. I'm a Milwaukee tool guy so I just use Milwaukee's Top-Off 175W Power supply which uses one of my M18 tool batteries as a power source. The Top-Off adapter gives me both AC and DC power. Moreover I can increase my watt hours depending on the size of the M18 battery that I choose to bring along (e.g. Milwaukee's largest M18 battery sizes are 3Ah, 5Ah, 9Ah and 12Ah; the 12Ah battery would give you 218Wh of power similar to what this device provides). The big plus with using a tool battery as a power source is the many different types of tools you can use with your battery with so it has a lot of utility.

Review to a Milwaukee's battery inverter as well as an off-brand inverter here: https://www.youtube.com/watch?v=fQ3l1HHmEPo

My biggest hang up with these types of all-in-one devices is that the battery isn't replacable so once it goes this device turns into a brick.
Last edited by smithmal September 17, 2025 at 11:34 AM.
Sep 18, 2025 06:31 AM
362 Posts
Joined Sep 2011
algee650Sep 18, 2025 06:31 AM
362 Posts
I have one and love it! Took it on our fam camping trip last wkd along with a few solar panels! You can't beat the power output and size! The 100w charger makes this a helluva deal!

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Sep 23, 2025 02:28 AM
179 Posts
Joined Sep 2019
jobe24Sep 23, 2025 02:28 AM
179 Posts
Quote from BigBG :
Beware the weird firmware behavior. You can't use this like an always-on UPS. It will shut down ports if the current draw is too low.

Also there is absolutely zero security on the Bluetooth connection for all of these Anker power stations. Anyone in range can turn your device off or mess with it at any time. It's a joke. Then again, if they are in Bluetooth range, they are probably in baseball bat range too.
i have had this connected to a tapo camera that draws 1W and it has not shut off for the past 3.5 days

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