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MinhTrinh 2.4K Views
Yesterday 11:37 PM

Costco Members: Bluetti AC500 5000W Power Station w/ B300K Battery Expansion

$1,200

$1,500

20% off
+ Free S&Hat Costco Wholesale
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Deal Details
Costco Wholesale has Bluetti AC500 5000W Portable Power Station w/ B300K 2764.8Wh Battery Expansion (C-AC500-3-65) on sale for $1199.99 valid for Costco Members only. Shipping is free.

Thanks to community member MinhTrinh for finding this deal

Note, must login to your Costco account w/ an active membership to purchase (5% for Non-Member Service/Surcharge Fee)

Includes
  • Bluetti AC500 5000W Portable Power Station
  • Bluetti B300K 2764.8Wh Battery Expansion
  • Bluetti AC500 Solar Charging Cable (MC4 to Aviation Cable)
  • Car Charging Cable (Cigarette Lighter-M to MC4)
  • Battery Expansion Cable (CA090)
  • 15A AC Charging Cable
  • P090D-P150D Cable

Editor's Notes

Written by Discombobulated | Staff
  • Price Research
    • At the time of research, this product is $300 lower (20% savings); normally listed/priced for $1499.99, this combines both the power station an expansion battery unit
  • About the Deal
    • Effortlessly handle the demanding startup requirements of appliances like air conditioners, power tools, and large refrigerators; unit features 5000W rated power w/ 10,000W surge, 2764.8Wh capacity w/ 16 versatile outlets
    • Limit 2 per member
    • Offer valid through September 13, 2026 or while promotional price/supplies last
  • Additional Details
    • Costco products can be retuned to any of the more than 800+ Costco warehouses worldwide

Original Post

Written by MinhTrinh
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Costco Wholesale has Bluetti AC500 5000W Portable Power Station w/ B300K 2764.8Wh Battery Expansion (C-AC500-3-65) on sale for $1199.99 valid for Costco Members only. Shipping is free.

Thanks to community member MinhTrinh for finding this deal

Note, must login to your Costco account w/ an active membership to purchase (5% for Non-Member Service/Surcharge Fee)

Includes
  • Bluetti AC500 5000W Portable Power Station
  • Bluetti B300K 2764.8Wh Battery Expansion
  • Bluetti AC500 Solar Charging Cable (MC4 to Aviation Cable)
  • Car Charging Cable (Cigarette Lighter-M to MC4)
  • Battery Expansion Cable (CA090)
  • 15A AC Charging Cable
  • P090D-P150D Cable

Editor's Notes

Written by Discombobulated | Staff
  • Price Research
    • At the time of research, this product is $300 lower (20% savings); normally listed/priced for $1499.99, this combines both the power station an expansion battery unit
  • About the Deal
    • Effortlessly handle the demanding startup requirements of appliances like air conditioners, power tools, and large refrigerators; unit features 5000W rated power w/ 10,000W surge, 2764.8Wh capacity w/ 16 versatile outlets
    • Limit 2 per member
    • Offer valid through September 13, 2026 or while promotional price/supplies last
  • Additional Details
    • Costco products can be retuned to any of the more than 800+ Costco warehouses worldwide

Original Post

Written by MinhTrinh

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+16
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4 Comments

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Today 1:39 AM
418 Comments
Joined Feb 2010
eric102Today 1:39 AM
418 Comments
I have one of these and four batteries in use 24/7 for 4 plus years. No issues and still occasionally getting software updates. Works great as a whole house UPS grid backup and solar generator. My hodgepodge collection of solar panels brings in 2,600 watts. Great deal, I think I paid over 2k back then just for the AC500, no battery included.
Last edited by eric102 September 8, 2026 at 06:43 PM.
Original Poster
Pro
Today 2:27 AM
6.8K Comments
Joined Nov 2006
MinhTrinhToday 2:27 AM
Original Poster
Pro
6.8K Comments
Quote from eric102 View quoted comment :
I have one of these and four batteries in use 24/7 for 4 plus years. No issues and still occasionally getting software updates. Works great as a whole house UPS grid backup and solar generator. My hodgepodge collection of solar panels brings in 2,600 watts. Great deal, I think I paid over 2k back then just for the AC500, no battery included.
I know right. The battery by itself is $900 (refurbished) to $1100 (new on sale). I just dont need another AC500 inverter. Otherwise, i would jump on this set up.
Today 2:42 AM
2.8K Comments
Joined Jul 2013
BeepBopBeepToday 2:42 AM
2.8K Comments
How do I determine what size battery I would need? Is there a calculator? My average monthly consumption is 2000KWh
Today 3:42 AM
6.7K Comments
Joined Dec 2004
CaleoToday 3:42 AM
6.7K Comments
Quote from BeepBopBeep View quoted comment :
How do I determine what size battery I would need? Is there a calculator? My average monthly consumption is 2000KWh
Depends what you want to power, and for how long. 2000kWh/mo is pretty heavy consumption. That's about 66kWh/day, or a continuous average of almost 3kW.. it's not really realistic to expect any portable battery backup solution to handle that kind of power for more than a couple hours, period. You'd have to spend a fortune buying proprietary batteries for units like this or Ecoflow's just to last 8+ hours (like 30kWh worth) as if nothing happened.

You're probably running central AC a lot, and one of these as a 'whole home backup' would likely be at or near overload with just that alone, nevermind everything else you might have running simultaneously.

If you can dial it back to just your fridge, chest freezer, and maybe a few other essential circuits during an outage, you could have a fridge/freezer & some lights and other moderate loads (~600-800W total average) last 12hrs+ with 10kWh worth of batteries.
Last edited by Caleo September 8, 2026 at 08:48 PM.
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