{"product_id":"bluetti-b500k-expansion-battery-5120wh-lifepo4","title":"BLUETTI B500K Expansion Battery | 5120Wh LiFePO4","description":"\u003cp style=\"font-size: 18px; font-weight: 600; margin-top: 0; margin-bottom: 16px;\"\u003e\nHigh-capacity 5.12kWh LiFePO₄ expansion battery for BLUETTI home backup, off-grid and modular power systems\n\u003c\/p\u003e\n\n\u003cstyle\u003e\n.togs-wrap{max-width:980px;margin:0 auto;font-family:inherit;line-height:1.6}\n.togs-title{font-size:28px;margin-bottom:10px}\n.togs-lead{font-size:16px;margin-bottom:16px}\n.togs-badges{display:flex;flex-wrap:wrap;gap:10px;margin:16px 0}\n.togs-badge{background:#86AC41;color:#fff;padding:8px 14px;border-radius:18px;font-size:13px}\n.togs-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin:24px 0}\n.togs-card{border:1px solid #e5e5e5;border-radius:12px;padding:16px;background:#fafafa}\n.togs-card h3{margin-top:0}\n.togs-specs{border-collapse:collapse;width:100%;margin-top:20px}\n.togs-specs th,.togs-specs td{border:1px solid #e5e5e5;padding:10px;text-align:left}\n.togs-specs th{background:#f5f5f5}\n.togs-note{background:#fff7e6;border-left:4px solid #e69a2e;padding:14px;margin:20px 0;border-radius:6px}\n.togs-faq-wrap{margin-top:20px}\n.togs-faq-item{border-bottom:1px solid #86AC41;padding:0;margin:0}\n.togs-faq-item summary{list-style:none;cursor:pointer;font-weight:600;padding:14px 36px 14px 0;position:relative}\n.togs-faq-item summary::-webkit-details-marker{display:none}\n.togs-faq-item summary::after{content:\"+\";position:absolute;right:0;top:50%;transform:translateY(-50%);font-size:20px}\n.togs-faq-item[open] summary::after{content:\"–\"}\n.togs-faq-item p{margin:0 0 14px 0;color:#444}\n\u003c\/style\u003e\n\n\u003cdiv class=\"togs-wrap\"\u003e\n\n\u003ch1 class=\"togs-title\"\u003eBLUETTI B500K Expansion Battery | 5120Wh LiFePO₄\u003c\/h1\u003e\n\n\u003cp class=\"togs-lead\"\u003e\nThe \u003cstrong\u003eBLUETTI B500K Expansion Battery\u003c\/strong\u003e adds a substantial \u003cstrong\u003e5,120Wh (5.12kWh)\u003c\/strong\u003e of LiFePO₄ battery storage to compatible BLUETTI power systems, giving you considerably longer runtime for home backup, off-grid living, RVs and remote applications.\n\u003c\/p\u003e\n\n\u003cp\u003e\nDesigned as part of BLUETTI's expandable energy ecosystem, the B500K allows you to start with the battery capacity you need today and add significantly more storage as your energy requirements grow.\n\u003c\/p\u003e\n\n\u003cdiv class=\"togs-badges\"\u003e\n\u003cspan class=\"togs-badge\"\u003e5,120Wh Capacity\u003c\/span\u003e\n\u003cspan class=\"togs-badge\"\u003eLiFePO₄ Battery\u003c\/span\u003e\n\u003cspan class=\"togs-badge\"\u003eModular Expansion\u003c\/span\u003e\n\u003cspan class=\"togs-badge\"\u003eUp to 100kWh+ Systems\u003c\/span\u003e\n\u003cspan class=\"togs-badge\"\u003eSolar Ready\u003c\/span\u003e\n\u003cspan class=\"togs-badge\"\u003eHome \u0026amp; Off-Grid\u003c\/span\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"togs-note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e The B500K is primarily an expansion battery and does not provide conventional 230V AC power by itself. For normal household AC appliances it must be connected to a compatible BLUETTI power station\/system. Some applications and BLUETTI products may require additional cables or accessories.\n\u003c\/div\u003e\n\n\u003cdiv class=\"togs-grid\"\u003e\n\n\u003cdiv class=\"togs-card\"\u003e\n\u003ch3\u003eMassive 5.12kWh Capacity\u003c\/h3\u003e\n\u003cp\u003eAdd 5,120Wh of battery storage to your compatible BLUETTI system, significantly extending runtime during outages or off-grid operation.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"togs-card\"\u003e\n\u003ch3\u003eBuild a Larger System\u003c\/h3\u003e\n\u003cp\u003eBLUETTI's modular architecture allows multiple B500K batteries to form much larger energy-storage systems as your power requirements grow.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"togs-card\"\u003e\n\u003ch3\u003eLiFePO₄ Technology\u003c\/h3\u003e\n\u003cp\u003eAdvanced lithium iron phosphate battery chemistry provides excellent durability, thermal stability and long service life for regular backup and off-grid use.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"togs-card\"\u003e\n\u003ch3\u003eFlexible Installation\u003c\/h3\u003e\n\u003cp\u003eDesigned for fixed or mobile applications, the B500K can form part of a home, off-grid or RV system and includes mounting points for suitable installations.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003ch2\u003e🔧 What’s Included\u003c\/h2\u003e\n\n\u003cul\u003e\n\u003cli\u003e1 × BLUETTI B500K Expansion Battery\u003c\/li\u003e\n\u003cli\u003e1 × Battery Expansion Cable (CA90 Short Cable)\u003c\/li\u003e\n\u003cli\u003e1 × User Manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e🔋 Extend Your Backup Time\u003c\/h2\u003e\n\n\u003cp\u003e\nBattery capacity determines how long your system can continue supplying energy. Adding a B500K provides another \u003cstrong\u003e5.12kWh of stored energy\u003c\/strong\u003e, making it particularly useful where overnight runtime, extended outages or periods of poor solar generation need to be covered.\n\u003c\/p\u003e\n\n\u003cp\u003e\nApplications include:\n\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eHome backup systems\u003c\/li\u003e\n\u003cli\u003eOff-grid homes \u0026amp; cabins\u003c\/li\u003e\n\u003cli\u003eRural properties\u003c\/li\u003e\n\u003cli\u003eRVs \u0026amp; motorhomes\u003c\/li\u003e\n\u003cli\u003eRemote worksites\u003c\/li\u003e\n\u003cli\u003eExtended camping\u003c\/li\u003e\n\u003cli\u003eSolar energy storage\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003e🏠 Expandable Home \u0026amp; Off-Grid Storage\u003c\/h2\u003e\n\n\u003cp\u003e\nOne of the B500K's biggest advantages is scalability. Rather than replacing your complete power system when you need more storage, compatible BLUETTI systems allow additional expansion batteries to be added.\n\u003c\/p\u003e\n\n\u003cp\u003e\nBLUETTI states that configurations can scale from a single \u003cstrong\u003e5.12kWh B500K\u003c\/strong\u003e to systems exceeding \u003cstrong\u003e100kWh\u003c\/strong\u003e when multiple Apex 300 power stations and B500K batteries are combined.\n\u003c\/p\u003e\n\n\u003ctable class=\"togs-specs\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003e1 × B500K\u003c\/th\u003e\n\u003ctd\u003e5.12kWh additional storage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e2 × B500K\u003c\/th\u003e\n\u003ctd\u003e10.24kWh additional storage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e3 × B500K\u003c\/th\u003e\n\u003ctd\u003e15.36kWh additional storage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e4 × B500K\u003c\/th\u003e\n\u003ctd\u003e20.48kWh additional storage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cp\u003e\nMaximum supported battery quantities depend on the BLUETTI power station and overall system configuration.\n\u003c\/p\u003e\n\n\u003ch2\u003e☀️ Solar \u0026amp; Off-Grid Integration\u003c\/h2\u003e\n\n\u003cp\u003e\nWhen combined with compatible BLUETTI equipment, the B500K can form part of a substantial solar-powered off-grid energy system.\n\u003c\/p\u003e\n\n\u003cp\u003e\nUsing BLUETTI's \u003cstrong\u003eSolarX 4K\u003c\/strong\u003e, compatible configurations can harvest up to \u003cstrong\u003e4,000W of solar power\u003c\/strong\u003e, while mobile systems can also integrate compatible BLUETTI alternator charging equipment.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThis flexibility makes the B500K suitable for applications ranging from additional home backup capacity to serious remote and off-grid power systems.\n\u003c\/p\u003e\n\n\u003ch2\u003e⚡ More Than Just Expansion\u003c\/h2\u003e\n\n\u003cp\u003e\nWhile primarily designed as an expansion battery, the B500K can also work with compatible BLUETTI ecosystem accessories to provide DC power.\n\u003c\/p\u003e\n\n\u003cp\u003e\nWhen connected to the optional \u003cstrong\u003eBLUETTI Hub D1\u003c\/strong\u003e, up to \u003cstrong\u003e700W of DC output\u003c\/strong\u003e can be made available for suitable devices.\n\u003c\/p\u003e\n\n\u003ch2\u003e🔋 Built for Long-Term Energy Storage\u003c\/h2\u003e\n\n\u003cp\u003e\nThe B500K uses \u003cstrong\u003eLiFePO₄ (Lithium Iron Phosphate)\u003c\/strong\u003e battery chemistry, well suited to applications requiring regular charging and discharging over a long service life.\n\u003c\/p\u003e\n\n\u003cp\u003e\nBLUETTI combines the battery cells with its battery management and thermal-control systems to provide stable operation across demanding home, mobile and off-grid applications.\n\u003c\/p\u003e\n\n\u003ch2\u003e🏠 Fixed or Mobile Installation\u003c\/h2\u003e\n\n\u003cp\u003e\nThe B500K includes mounting points allowing it to be secured in suitable home or RV installations.\n\u003c\/p\u003e\n\n\u003cp\u003e\nFor applications where the battery needs to be moved, it can also be paired with BLUETTI's optional Foldable Trolley 2.\n\u003c\/p\u003e\n\n\u003ch2\u003e🔌 Compatibility\u003c\/h2\u003e\n\n\u003cp\u003e\nThe B500K is designed to work across a range of compatible BLUETTI power systems and accessories, including newer modular BLUETTI configurations such as the \u003cstrong\u003eApex 300\u003c\/strong\u003e.\n\u003c\/p\u003e\n\n\u003cp\u003e\nSome older BLUETTI systems may require an additional connection cable. For example, connection to the AC500 requires the appropriate P090D to P150D cable, sold separately.\n\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNot sure whether the B500K is compatible with your BLUETTI system? Contact us with your power station model and we'll help confirm the correct battery and connection requirements.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable class=\"togs-specs\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBattery Capacity\u003c\/th\u003e\n\u003ctd\u003e5,120Wh \/ 5.12kWh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBattery Chemistry\u003c\/th\u003e\n\u003ctd\u003eLiFePO₄\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct Type\u003c\/th\u003e\n\u003ctd\u003eExpansion Battery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSystem\u003c\/th\u003e\n\u003ctd\u003eBLUETTI Modular Energy Storage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDC Output\u003c\/th\u003e\n\u003ctd\u003eUp to 700W with compatible Hub D1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSolar Integration\u003c\/th\u003e\n\u003ctd\u003eUp to 4,000W with compatible SolarX 4K configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eInstallation\u003c\/th\u003e\n\u003ctd\u003eFixed or mobile with compatible accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cdiv class=\"togs-faq-wrap\"\u003e\n\n\u003cdetails class=\"togs-faq-item\"\u003e\n\u003csummary\u003eHow much capacity does the B500K add?\u003c\/summary\u003e\n\u003cp\u003eEach B500K provides 5,120Wh or 5.12kWh of additional LiFePO₄ battery storage.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"togs-faq-item\"\u003e\n\u003csummary\u003eCan the B500K power normal 230V appliances by itself?\u003c\/summary\u003e\n\u003cp\u003eNo. The B500K is primarily an expansion battery and does not contain a conventional 230V AC inverter. For household AC appliances it needs to be connected to a compatible BLUETTI power station or system.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"togs-faq-item\"\u003e\n\u003csummary\u003eDoes the B500K work with the Apex 300?\u003c\/summary\u003e\n\u003cp\u003eYes. The B500K can be used to substantially expand the battery capacity of compatible Apex 300 systems.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"togs-faq-item\"\u003e\n\u003csummary\u003eCan I add more than one B500K?\u003c\/summary\u003e\n\u003cp\u003eYes. Compatible BLUETTI systems support multiple expansion batteries. The maximum number depends on the power station and overall system configuration.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"togs-faq-item\"\u003e\n\u003csummary\u003eCan the B500K be charged from solar?\u003c\/summary\u003e\n\u003cp\u003eYes, when connected within a compatible BLUETTI system. Solar charging capability and maximum input depend on the power station, charge controller and system configuration being used.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"togs-faq-item\"\u003e\n\u003csummary\u003eCan I use the B500K for off-grid living?\u003c\/summary\u003e\n\u003cp\u003eYes. Its 5.12kWh capacity makes it particularly useful for expanding off-grid battery storage and increasing overnight or poor-weather runtime.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"togs-faq-item\"\u003e\n\u003csummary\u003eCan the B500K provide DC power?\u003c\/summary\u003e\n\u003cp\u003eYes, when paired with compatible BLUETTI ecosystem components such as the Hub D1, which can provide up to 700W of DC output.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003cdetails class=\"togs-faq-item\"\u003e\n\u003csummary\u003eDoes the battery expansion cable come with it?\u003c\/summary\u003e\n\u003cp\u003eYes. A CA90 short battery expansion cable is included with the B500K.\u003c\/p\u003e\n\u003c\/details\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Bluetti","offers":[{"title":"Default Title","offer_id":54128174694718,"sku":"B500K2","price":4199.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0899\/5382\/9182\/files\/bluetti-b500k-expansion-battery-right-angle.jpg?v=1786935073","url":"https:\/\/theoffgridstore.nz\/products\/bluetti-b500k-expansion-battery-5120wh-lifepo4","provider":"The Off Grid Store","version":"1.0","type":"link"}