{"product_id":"bluetti-b300k-expansion-battery","title":"BLUETTI B300K Expansion Battery","description":"\u003ch3\u003eWhat extra runtime does it give you?\u003c\/h3\u003e\u003cp\u003eThe B300K adds 2,764.8Wh to a compatible BLUETTI power station. Paired with the two units we stock:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBLUETTI AC200PL:\u003c\/strong\u003e total capacity rises from 2,304Wh to 5,068.8Wh on the same 2,400W output. A full-size fridge (~150W) runs for ~29 hours instead of ~13 (+16 hours); a camping fridge (~60W) runs for ~72 hours instead of ~33 (+39 hours)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBLUETTI Apex 300:\u003c\/strong\u003e total capacity rises from 2,764.8Wh to 5,529.6Wh on the same 3,840W output. A full-size fridge runs for ~31 hours instead of ~16 (+15 hours); an induction cooktop (~2000W) runs for ~2 hours 20 minutes instead of ~1 hour 10 minutes (+1 hour 10 minutes)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eIt's also usable on its own — a built-in 12W USB-A port lets you charge small devices directly off the pack without a host station connected.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eFigures are estimates based on typical appliance draw and around 15% inverter loss — actual runtime varies with the appliance, ambient temperature and load.\u003c\/em\u003e\u003c\/p\u003e\u003cp\u003eThe BLUETTI B300K is the expansion battery that turns a single power station into a genuine home energy system. Matching its host unit's chemistry and voltage, it adds a further 2,764.8Wh of LiFePO4 storage — built on the same 6,000+ cycle cells you'd expect from BLUETTI's larger stations — so you can scale capacity up as your off-grid or backup power needs grow, rather than buying a second standalone unit.\u003c\/p\u003e\u003cp\u003eIt's designed to link directly into compatible BLUETTI systems via a dedicated expansion port, supporting up to 60A charge and 70A discharge current for fast, efficient energy transfer between units. It's a substantial unit at 29.5kg, best moved with two hands, but that mass is all battery. A single USB-A output is included for convenience charging directly off the pack.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e2,764.8Wh LiFePO4 capacity (51.2V, 54Ah), 6,000+ cycles to 80% retention\u003c\/li\u003e\n\u003cli\u003eCompatible with Apex 300, AC200L, AC200PL, AC300 and AC500 (plus existing B300\/B300S setups)\u003c\/li\u003e\n\u003cli\u003eConnects via dedicated expansion port: 60A max charge, 70A max discharge\u003c\/li\u003e\n\u003cli\u003eDual 58.4V DC expansion ports rated to 90A max each\u003c\/li\u003e\n\u003cli\u003eBuilt-in 12W USB-A output (5V\/2.4A) for direct device charging\u003c\/li\u003e\n\u003cli\u003eOperating range: 0–40°C charging, -20–40°C discharging\u003c\/li\u003e\n\u003cli\u003eWeight 29.5kg, dimensions 525 × 327 × 209mm\u003c\/li\u003e\n\u003cli\u003e4-year manufacturer warranty, Australian stock and support\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BLUETTI","offers":[{"title":"Default Title","offer_id":43797290418239,"sku":"P-B300K2-UN-GY-BL-010","price":2099.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0671\/4802\/1823\/files\/bluetti-final-031.png?v=1787753016","url":"https:\/\/reservolt.com.au\/products\/bluetti-b300k-expansion-battery","provider":"Reservolt","version":"1.0","type":"link"}