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BLUETTI Expansion Battery B300K×2, 5529.6Wh Battery Pack for Apex 300
✅ In stock
📉 Price recently dropped
F
Grade
Analysis Confidence
81%
⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.
Check Deal at Amazon
Price verified Sep 25, 2026 8:44 PM · Prices & availability subject to change
Is This a Good Price on Amazon?
💤 Not a Deal- 💤Verdict: Not a Deal. Price is at or above historical norms. Best to wait for a sale.
- 💰The current price is slightly above the going rate for this product — worth watching for a drop.
- 📉Better-priced windows have occurred before, though not frequently — today's price is reasonably competitive.
- 📈The direction is downward at the moment; if that holds, an even better price may surface — though timing the market is never certain.
How We Scored This Deal
Price Competitiveness
0.05/28
Recent Value
0/22
Market Standing
3.96/20
Deal Strength
0/20
Momentum
10/10
📝 Product Overview
🏪 Sold by
Bluetti
🚚 Shipping
Free Shipping
Product Details
✓[Universal Expansion Compatibility] - B300K links smoothly to Apex 300 via its expansion port, letting you upgrade capacity flexibly to fit any situation—no hassle, just seamless power scaling.
✓[Next-Generation Cells] - Boasts advanced cells with 4,000+ cycles to 80% capacity, boosting lifespan by 15%. They also hold up better in high temps, keeping performance steady when it’s hot.
✓[Next-Gen Design Architecture 2.0] - B300K’s wireless internal setup cuts down on failure chances and saves space, making this expansion battery pack more compact and easier to carry.
✓[Built-In USB Charging Port] - Doubles as a huge power bank with a USB port, perfect for unexpected needs. Pair it with any compatible BLUETTI power station to add extra versatility to your setup.
✓[What You Get] - BLUETTI expansion battery B300K×2, CA90 battery extension cable for solar generator Apex 300 and user manual.
⚙️ Specifications
Brand
BLUETTI
Voltage
120 volts
Item Weight
65 pounds
Special Feature
2764.8Wh Ultra-Large Capacity, 4000+ Long Cycles, Built-In USB Charging Port, Ultra-Fast Charging Speed, Wide Compatibility
Manufacturer
BLUETTI
ASIN
B0FZ87DKWC
Item model number
B300K
Customer Reviews
4.4 4.4 out of 5 stars (170) var dpAcrHasRegisteredArcLinkClickAction; P.when('A', 'ready').execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( 'acrLink-click-metrics', 'click', { "allowLinkDefault": true }, function (event) { if (window.ue) { ue.count("acrLinkClickCount", (ue.count("acrLinkClickCount") || 0) + 1); } } ); } }); P.when('A', 'cf').execute(function(A) { A.declarative('acrStarsLink-click-metrics', 'click', { "allowLinkDefault" : true }, function(event){ if(window.ue) { ue.count("acrStarsLinkWithPopoverClickCount", (ue.count("acrStarsLinkWithPopoverClickCount") || 0) + 1); } }); }); 4.4 out of 5 stars
Best Sellers Rank
#426,625 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #3,359 in Cordless Tool Battery Packs
Date First Available
November 3, 2025
Part Number
B300K
