{"product_id":"bluetti-b500k-expansion-battery","title":"BLUETTI B500K Expansion Battery","description":"\u003ch3\u003eWhat extra runtime does it give you?\u003c\/h3\u003e\u003cp\u003eThe B500K adds a substantial 5,120Wh to a compatible BLUETTI power station. Paired with the BLUETTI Apex 300 (2,764.8Wh, 3,840W) we stock, total capacity climbs to 7,884.8Wh — nearly triple the base unit, on the same 3,840W output:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eA full-size fridge (~150W): runtime extends from ~16 hours to ~45 hours (+29 hours)\u003c\/li\u003e\n\u003cli\u003eA small camping fridge (~60W): from ~39 hours to ~112 hours (+73 hours, over four and a half days)\u003c\/li\u003e\n\u003cli\u003eAn induction cooktop or portable air conditioner (~2000W): from ~1 hour 10 minutes to ~3 hours 20 minutes (+2 hours 10 minutes)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eAt 45kg it's a serious addition best moved with two people or a trolley, but it's built to sit alongside an Apex 300 (or other compatible units) in a proper off-grid battery bank rather than as a portable accessory.\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\u003eFor those who need serious reserve capacity, the BLUETTI B500K adds a substantial 5,120Wh of LiFePO4 storage to any compatible power station, making it the go-to expansion for large households, remote properties or extended off-grid stretches where a single base unit just isn't enough. It shares the same rugged LiFePO4 chemistry BLUETTI is known for, rated to 4,000+ cycles while retaining 80% of its original capacity.\u003c\/p\u003e\u003cp\u003eIt links into the host system through a simple expansion port connection using the included long expansion cable, handling up to 65A charge and 70A discharge current for efficient power transfer. At 45kg it's a hefty addition, so plan for a two-person or trolley-assisted install, but the payoff is a big jump in usable energy without needing a second full power station. It's built to sit alongside compatible units in a proper off-grid battery bank setup.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e5,120Wh LiFePO4 capacity, rated for 4,000+ cycles to 80% capacity\u003c\/li\u003e\n\u003cli\u003eCompatible with AC200L, AC200MAX, AC300, AC500, Apex 300 and B300K systems\u003c\/li\u003e\n\u003cli\u003eExpansion port connection: up to 65A max charge, 70A max discharge\u003c\/li\u003e\n\u003cli\u003eDual expansion ports rated 58.4VDC, 90A max each\u003c\/li\u003e\n\u003cli\u003eIncludes P090A long expansion cable and user manual\u003c\/li\u003e\n\u003cli\u003eOperating range: 0–40°C charging, -20–40°C discharging\u003c\/li\u003e\n\u003cli\u003eWeight 45kg, dimensions 520 × 327 × 308.5mm\u003c\/li\u003e\n\u003cli\u003eBacked by BLUETTI's multi-year manufacturer warranty\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BLUETTI","offers":[{"title":"Default Title","offer_id":43797290451007,"sku":"P-B500K1-UN-GY-20","price":3199.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0671\/4802\/1823\/files\/bluetti-final-034.png?v=1787753016","url":"https:\/\/reservolt.com.au\/products\/bluetti-b500k-expansion-battery","provider":"Reservolt","version":"1.0","type":"link"}