{"product_id":"bluetti-b500k-expansion-battery-5-120wh","title":"BLUETTI B500K Expansion Battery | 5120Wh","description":"\u003cstyle\u003e\n\/* ===== HB21 BATTERY PRODUCT PAGE CSS (house style) ===== *\/\n.hb21-spec-wrap { max-width: 1100px; margin: 0 auto 40px auto; padding: 0 20px; text-align: center; }\n.hb21-spec-wrap h2, .hb21-spec-wrap h3, .hb21-spec-wrap p, .hb21-spec-wrap li { text-align: center; }\n.hb21-product-intro { max-width: 920px; margin: 0 auto 30px auto; }\n.hb21-product-intro h2 { margin: 0 0 14px 0; font-size: 2rem; line-height: 1.2; }\n.hb21-product-intro p { margin: 0 auto 14px auto; line-height: 1.7; max-width: 900px; }\n.hb21-spec-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; margin-top: 30px; text-align: left; }\n.hb21-spec-card { background: #f7f7f7; border-radius: 14px; padding: 24px; text-align: left; }\n.hb21-spec-card h3 { margin: 0 0 16px 0; font-size: 1.25rem; text-align: left; }\n.hb21-spec-card ul { list-style: none; padding: 0; margin: 0; }\n.hb21-spec-card li { margin: 0 0 10px 0; line-height: 1.55; text-align: left; }\n.hb21-spec-card strong { font-weight: 700; }\n.hb21-warranty-note { margin-top: 28px; font-size: 1rem; line-height: 1.6; text-align: left; }\n.hb21-section { max-width: 1100px; margin: 0 auto; padding: 34px 20px; text-align: center; }\n.hb21-section h2, .hb21-section h3 { font-size: 2rem; line-height: 1.2; font-weight: 700; margin: 0 0 14px 0; text-align: center; }\n.hb21-section p { max-width: 900px; margin: 0 auto 14px auto; line-height: 1.65; text-align: center; }\n.hb21-section a, .hb21-faq-item a { color: #0066cc; text-decoration: underline; }\n.hb21-footnote { font-size: 0.9rem; color: #555; margin-top: 10px; }\n.hb21-image-full { max-width: 1100px; margin: 0 auto; padding: 14px 20px; }\n.hb21-image-full img { display: block; width: 100%; height: auto; margin: 0 auto; border-radius: 8px; }\n.hb21-video-wrap { max-width: 1100px; margin: 0 auto; padding: 14px 20px; }\n.hb21-video-wrap .hb21-video-embed { position: relative; width: 100%; padding-bottom: 56.25%; height: 0; overflow: hidden; border-radius: 8px; }\n.hb21-video-wrap .hb21-video-embed iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: 0; }\n.hb21-card-grid { max-width: 1100px; margin: 0 auto; padding: 14px 20px; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }\n.hb21-card { text-align: center; }\n.hb21-card img { display: block; width: 100%; height: auto; border-radius: 8px; margin-bottom: 10px; object-fit: cover; aspect-ratio: 4 \/ 3; }\n.hb21-card h3 { margin: 0 0 6px 0; font-size: 1.1rem; line-height: 1.3; text-align: center; }\n.hb21-card p { margin: 0; line-height: 1.5; font-size: 0.95rem; text-align: center; }\n.hb21-card-compact h3 { font-size: 0.95rem; margin-bottom: 4px; }\n.hb21-card-compact p { font-size: 0.85rem; line-height: 1.4; }\n.hb21-faq-wrap { max-width: 980px; margin: 40px auto 20px auto; padding: 0 20px; text-align: center; }\n.hb21-faq-wrap h2 { font-size: 2rem; line-height: 1.2; margin-bottom: 20px; text-align: center; }\n.hb21-faq-item { background: #f7f7f7; border-radius: 12px; padding: 18px 20px; margin-bottom: 14px; text-align: left; }\n.hb21-faq-item h3 { margin: 0 0 8px 0; font-size: 1.1rem; line-height: 1.4; text-align: left; }\n.hb21-faq-item p { margin: 0; line-height: 1.65; text-align: left; }\n@media (max-width: 989px) {\n  .hb21-spec-grid { grid-template-columns: 1fr; }\n  .hb21-card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }\n  .hb21-product-intro h2, .hb21-section h2, .hb21-section h3, .hb21-faq-wrap h2 { font-size: 1.7rem; }\n}\n@media (max-width: 749px) { .hb21-card-grid { grid-template-columns: 1fr; } }\n\u003c\/style\u003e\n\u003cdiv class=\"hb21-spec-wrap\"\u003e\n\u003cdiv class=\"hb21-product-intro\"\u003e\n\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe BLUETTI B500K is a 5120Wh LiFePO4 expansion battery that adds stored capacity to a compatible BLUETTI power station, extending its runtime for home backup, off-grid living, motorhomes, and long NZ winter outages. It is an add-on battery, not a standalone unit: it stores energy for a host power station and does not provide AC output on its own.\u003c\/p\u003e\n\u003cp\u003eThe cells are LiFePO4, rated for 4000+ cycles to 80 percent of their original capacity, so the pack is built to last through years of daily use. The B500K connects to its host with the included CA90 short cable, and multiple units stack to build a much larger system (BLUETTI rates a full multi-host setup to over 100kWh). It is the current-generation replacement for the discontinued B300S.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb21-spec-grid\"\u003e\n\u003cdiv class=\"hb21-spec-card\"\u003e\n\u003ch3\u003eBLUETTI B500K Specs:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e 5120Wh\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCell Chemistry:\u003c\/strong\u003e LiFePO4 (Lithium Iron Phosphate)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCycle Life:\u003c\/strong\u003e 4000+ cycles to 80 percent of original capacity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 45kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 520 x 327 x 308.5mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpansion Ports:\u003c\/strong\u003e 2 x expansion port, 58.4V DC max, 90A max\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCharging Current:\u003c\/strong\u003e 65A max\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDischarging Current:\u003c\/strong\u003e 70A max\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCharging Temperature:\u003c\/strong\u003e 0°C to 40°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDischarging Temperature:\u003c\/strong\u003e -20°C to 40°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage Temperature:\u003c\/strong\u003e -20°C to 40°C (up to 1 month); -20°C to 25°C (up to 6 months)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Humidity:\u003c\/strong\u003e 5 percent to 95 percent RH\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnclosure Rating:\u003c\/strong\u003e IP20 (indoor use)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMonitoring:\u003c\/strong\u003e BLUETTI app\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb21-spec-card\"\u003e\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x BLUETTI B500K Expansion Battery\u003c\/li\u003e\n\u003cli\u003e1 x Battery Expansion Cable (CA90 Short Cable)\u003c\/li\u003e\n\u003cli\u003e1 x User Manual\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0528\/2424\/4410\/files\/bluetti-b500k-user-manual.pdf?v=1784108509\" title=\"Download the BLUETTI B500K user manual (PDF)\" target=\"_blank\" rel=\"noopener\"\u003eDownload the BLUETTI B500K user manual (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 4-year warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"hb21-warranty-note\" style=\"margin-top:1em;\"\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e The B500K is an expansion battery, not a standalone unit. It stores energy for a compatible BLUETTI power station, which is sold separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb21-image-full\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0528\/2424\/4410\/files\/bluetti-b500k-expansion-battery-5120wh-hero.webp?v=1784108515\" alt=\"BLUETTI B500K feature overview: up to 100kWh capacity, compatible across BLUETTI models, 4000+ cycles, wall-mount ready\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"hb21-section\"\u003e\n\u003ch2\u003eCompatible Across the BLUETTI Range\u003c\/h2\u003e\n\u003cp\u003eThe B500K expands a range of BLUETTI power stations rather than a single model. It works with the Apex 300, AC500, AC300, AC200MAX, and AC200L, so an existing system can be grown without replacing the power station you already own.\u003c\/p\u003e\n\u003cp class=\"hb21-footnote\"\u003eCompatibility is host-dependent. Confirm your exact power station and how many batteries it supports with us before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb21-image-full\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0528\/2424\/4410\/files\/bluetti-b500k-expansion-battery-5120wh-marketing-compatibility.webp?v=1784108514\" alt=\"BLUETTI B500K shown alongside compatible AC300, AC500 and Apex 300 power stations\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"hb21-section\"\u003e\n\u003ch2\u003eLFP Cells Built for Safety and Longevity\u003c\/h2\u003e\n\u003cp\u003eThe B500K uses LiFePO4 cells rated for 4000+ cycles to 80 percent capacity, a chemistry chosen for stability and a long service life. A cable-free internal layout reduces failure points, and the pack manages its own temperature within a wide operating range for reliable use through a NZ winter or a hot summer bach.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb21-image-full\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0528\/2424\/4410\/files\/bluetti-b500k-expansion-battery-5120wh-marketing-safety.webp?v=1784108514\" alt=\"Cutaway of the BLUETTI B500K showing its cable-free LiFePO4 internal layout and cooling\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"hb21-section\"\u003e\n\u003ch2\u003eFixed or Movable\u003c\/h2\u003e\n\u003cp\u003eSet the B500K up as a permanent part of a home-backup system or move it where the power is needed. It is wall-mount ready with a screw-in design for a tidy fixed install, and it stacks with its host for a compact footprint.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb21-image-full\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0528\/2424\/4410\/files\/bluetti-b500k-expansion-battery-5120wh-marketing-setup.webp?v=1784108515\" alt=\"BLUETTI B500K in a wall-mounted fixed setup and a movable stacked setup\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"hb21-image-full\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0528\/2424\/4410\/files\/bluetti-b500k-expansion-battery-5120wh-witb-image.webp?v=1784108513\" alt=\"What's in the box for the BLUETTI B500K: the expansion battery, the CA90 short cable, and the user manual\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"hb21-section\"\u003e\n\u003ch2\u003ePairs Well With\u003c\/h2\u003e\n\u003cp\u003eThe B500K is built to expand compatible BLUETTI power stations. It pairs with the \u003ca href=\"https:\/\/hb21.co.nz\/products\/bluetti-apex-300-portable-power-station-3840w-2764-8wh\" title=\"BLUETTI Apex 300 Portable Power Station\"\u003eBLUETTI Apex 300\u003c\/a\u003e to extend that system's backup and off-grid runtime, and is also compatible with the AC500, AC300, AC200MAX, and AC200L.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb21-faq-wrap\"\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"hb21-faq-item\"\u003e\n\u003ch3\u003eDoes the B500K work on its own?\u003c\/h3\u003e\n\u003cp\u003eNo. The B500K is an expansion battery, not a standalone power station. It stores energy for a compatible BLUETTI power station and does not provide AC output by itself. You need a compatible host, which is sold separately.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb21-faq-item\"\u003e\n\u003ch3\u003eWhich power stations does it work with?\u003c\/h3\u003e\n\u003cp\u003eThe B500K is compatible with the BLUETTI Apex 300, AC500, AC300, AC200MAX, and AC200L. The number of batteries a system supports depends on the host, so please confirm your setup with us before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb21-faq-item\"\u003e\n\u003ch3\u003eWhat cable is included?\u003c\/h3\u003e\n\u003cp\u003eThe B500K ships with the CA90 short cable, which connects the battery to a compatible BLUETTI power station. No separate expansion cable needs to be purchased for a standard single-battery connection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb21-faq-item\"\u003e\n\u003ch3\u003eHow much does it add, and can I stack more than one?\u003c\/h3\u003e\n\u003cp\u003eEach B500K adds 5120Wh. Multiple units stack to expand a system further, and a full multi-host BLUETTI setup scales to over 100kWh. The exact number your host supports varies, so confirm the limit for your power station with us.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb21-faq-item\"\u003e\n\u003ch3\u003eDoes it replace the B300S?\u003c\/h3\u003e\n\u003cp\u003eYes. The B500K is the current-generation replacement for the discontinued B300S, with a larger 5120Wh capacity and LiFePO4 cells rated for 4000+ cycles.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb21-faq-item\"\u003e\n\u003ch3\u003eWhat warranty does it come with?\u003c\/h3\u003e\n\u003cp\u003eThe B500K comes with a 4-year warranty in New Zealand, handled through us as the distributor. There is no registration step required to receive the full term.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n","brand":"BLUETTI","offers":[{"title":"Default Title","offer_id":45946073481402,"sku":"B500K","price":4499.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0528\/2424\/4410\/files\/bluetti-b500k-front-view_webp.png?v=1784108520","url":"https:\/\/hb21.co.nz\/products\/bluetti-b500k-expansion-battery-5-120wh","provider":"HB21","version":"1.0","type":"link"}