Best in 7 days
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Ships within 48 hours · Estimated delivery Jun 13 - Jun 18
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Description
BLUETTI B300K 2764.8Wh Expansion Battery, LiFePO4 Battery Module with 4000+ Life Cycles for Apex 300, AC500, AC300, and AC200LThe BLUETTI B300K Expansion Battery is a high density, modular power solution designed to significantly increase the storage capacity of existing BLUETTI power systems. Positioned as a more streamlined and cost effective alternative to the original B300, the B300K focuses on "pure battery" performance, offering a more compact footprint and a lighter weight while maintaining long term durability. With a 2,764. 8Wh capacity, it utilizes automotive grade
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- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.7 ★★★★★
Based on 2270 reviews
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Product Reviews
★★★★★ 5
Money Saver!!!!
Purchased yesterday and put bot cans in my gas tank. Very pleased with how it works. Had a code P0175 02 sensor bank 2. Thought I had to replace the sensors but looked into products and read the reviews of these can. Check engine light went off this morning. Drove it aggressively after I used the cans and they worked as advertised. Highly recommend.
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Reviewed in the United States on May 12, 2026
★★★★★ 5
car performance improvement
I bought this to use in my 2021 chevrolet equinox when my check engine light came on with an exhaust issue. so far I believe it's working. I have noticed increased mileage and a little more "zip" in the engine.
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Reviewed in the United States on May 28, 2026
★★★★★ 5
Works for us!
We use this regularly in my car. Seems to help keep sensors clear. My engine light comes on if I don’t add. We add it to gas tank. My husband says it’s because of poor quality (dirty) gas from other countries.
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Reviewed in the United States on May 22, 2026
★★★★★ 4
Works like a supplement
If you use it and see a difference, you will blame it on this cleaner, if not, you will say the product does not work. Exactly like your weight loss supplements! Who knows what this stuff does, but it may do something. Or maybe it does not.
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Reviewed in the United States on February 7, 2026
★★★★★ 5
Used to clean an O2 sensor
Seems to have resolved an issue with a wavering idle for my 89 Mercedes 300e with 468,000 miles.
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Reviewed in the United States on March 27, 2026
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