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eBay Refurbished

BLUETTI B300K 2764.8Wh Expandable Extra Battery for AC200L/AC200MAX/AC300/AC500

Compatible with AC200L/MAX/AC300/AC500 power stations.
US $998.75
as low as $89.67/mo with
Condition:
Certified - Refurbished
100% tested & working. Come with original packing box and all standard accessories. Bluetti official ... Read moreabout condition
Out of Stock296 sold
Shipping:
Free Standard Shipping.
Located in: Chino, California, United States
Delivery:
Estimated between Tue, Nov 18 and Fri, Nov 21 to 94104
Delivery time is estimated using our proprietary method which is based on the buyer's proximity to the item location, the shipping service selected, the seller's shipping history, and other factors. Delivery times may vary, especially during peak periods.
Returns:
30 days returns. Seller pays for return shipping.
Payments:
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Shop with confidence

Direct from BLUETTI
Item sold directly by the brand. 
eBay Refurbished
All items are tested by qualified refurbishers and function as intended. Learn more- eBay Refurbished - opens in a new window or tab
Two-year warranty included
Protected with fast repairs or replacements. U.S residents only. Your email is shared with Allstate for a frictionless experience. Learn more- free warranty - opens in a new window or tab
Certified by manufacturer
Professionally inspected, cleaned and refurbished by the manufacturer or a manufacturer-approved vendor.
Like-new
Certified Refurbished products function and look like-new.
2-year warranty
This item has a 2-year warranty serviced by Allstate.
Free shipping & returns
Never pay for shipping and get 30 day free returns with eBay Refurbished.
Seller assumes all responsibility for this listing.
eBay item number:375859403754
Last updated on Nov 10, 2025 01:10:47 PSTView all revisionsView all revisions

Item specifics

Condition
Certified - Refurbished
The item is in pristine, like-new condition. It has been professionally inspected, cleaned, and refurbished by the manufacturer or a manufacturer-approved vendor to meet manufacturer specifications. The item will be in new packaging with original or new accessories. See the seller's listing for full details. See all condition definitionsopens in a new window or tab
Seller Notes
“100% tested & working. Come with original packing box and all standard accessories. Bluetti ...
Application
Agriculture/Farming, Back-up Power, Camping/Hiking, Commercial, Electronics, Home/Garden
Brand
BLUETTI
Charging Mode
MPPT (Maximum Power Point Tracking)
Color
Gray
Current Output
10 A or Less
Current Rating
3A-10A
Current Type
AC/DC
Features
All Daylight Conditions, Maintenance Free, Monocrystalline, Portable, Smart Module, USB Port
Item Length
20.67in
Model
Bluetti B300K
MPN
BLUETTI B300K
Net Weight
Approx. 29.5kg (65.04lbs)
Power
/
Power Source
Battery
Size
525 × 327 × 209mm (20.67 × 12.87 × 8.23in)
Solar Technology
Monocrystalline
System Configuration
Grid-Tie
Type
Expansion battery
Voltage
100-120V
Warranty
4-year directly from Bluetti
UPC
193022000100
Category

Item description from the seller

About this seller

BLUETTI Official Store

99.3% positive feedback11K items sold

Joined Sep 2023
From a single idea - a portable, powerful source of electricity - we've built out a whole line up of solar power storage products for adventurers and all kinds of off-grid lives.BLUETTI is and always ...
See more

Detailed seller ratings

Average for the last 12 months
Accurate description
4.9
Reasonable shipping cost
5.0
Shipping speed
5.0
Communication
5.0

Seller feedback (2,166)

All ratingsselected
Positive
Neutral
Negative
  • y***i (860)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Last year I purchased the AC500 and the B300S battery combo. I use it primarily when I need back up power or in an are that I do not have power. I used it to run 2 Cpap machines for a week off the grid, while charging phones, computers, charging radios, and tablets. I could Not have been happier with the products. I had planned to add more batteries as I go. So I did. I added 2 of these B300k units. They are noticeably lighter. for a refurbished item, it looks like new. Highly recommend!
  • 1***n (33)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    All four items arrived same day - quick shipping. The price was great! However, the condition of 2 of the boxes was pretty poor. I have not yet checked for any damage (doubt there will be) but will update if need be. Appearance of the other 2 boxes was perfect...did appear that all four had been damp at some point. Other than this small issue, I am more than satisfied with Bluetti products and with this particular purchase. Again, if any damage to the units, I will update this review.
  • j***- (49)- Feedback left by buyer.
    Past 6 months
    Verified purchase
    Purchased 2 B300K batteries to add to my AC500. Plugged them in and turned the AC500 on. Worked instantly. No configuration needed. Latest firmware already installed. You will need to buy the BLUETTI P150D to P090D Cable separately to connect it to the AC500.
See all feedback

Product ratings and reviews

4.9
16 product ratings
  • 15 users rated this 5 out of 5 stars
  • 1 users rated this 4 out of 5 stars
  • 0 users rated this 3 out of 5 stars
  • 0 users rated this 2 out of 5 stars
  • 0 users rated this 1 out of 5 stars

Would recommend

Good value

Good quality

Most relevant reviews

  • Top favorable review

    works great, i wish the SOC setting kept...

    works great, i wish the SOC setting kept all batteries, regardless of their watt hour rating at the same percentages. i'm mixing two B300K with one B300 battery and the percentages are all over the place, but the average SOC is correct. I wish they were all consistent to each battery.

    Verified purchase: YesCondition: Pre-OwnedSold by: bluettidirect

  • Purchased 2 B300K batteries to add to my...

    Purchased 2 B300K batteries to add to my AC500. Plugged them in and turned the AC500 on. Worked instantly. No configuration needed. Latest firmware already installed. You will need to buy the BLUETTI P150D to P090D Cable separately to connect it to the AC500.

    Verified purchase: YesCondition: RefurbishedSold by: bluettidirect

  • Good technology for energy-grid independence

    This was the 4th B300 I have purchased via Ebay. The install addition to the other 3 B300 was straight forward and the added battery capacity is already showing lower electrical line watts being consumed.

    Verified purchase: YesCondition: Pre-OwnedSold by: bluetti_us

  • Great battery. Charged it to same penta...

    Great battery. Charged it to same pentagon as 3 others, then connected to power station, and it works perfectly.

    Verified purchase: YesCondition: Pre-OwnedSold by: bluetti_us_official

  • so far so good it’s doing its job. It’s ...

    so far so good it’s doing its job. It’s charging with my solar panel good working condition thank you

    Verified purchase: YesCondition: Pre-OwnedSold by: bluettidirect