{"product_id":"bluetti-b500k-battery","title":"BLUETTI B500K — 5120Wh Expansion Battery","description":"\u003ch2\u003eBLUETTI B500K — 5,120Wh High-Capacity Expansion Battery\u003c\/h2\u003e\n\u003cp\u003eThe B500K is BLUETTI's high-capacity LiFePO4 expansion battery — designed to scale BLUETTI power systems to whole-home and off-grid territory with a single module. With 5,120Wh per battery (nearly double the B300K), it's the right choice when you need serious storage in fewer units. LiFePO4 chemistry delivers thousands of cycles and the long service life that makes battery scaling actually pay off versus traditional lead-acid.\u003c\/p\u003e\n\n\u003ch3\u003eKey Specs\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e 5,120Wh per module\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery Type:\u003c\/strong\u003e LiFePO4 (Lithium Iron Phosphate) — automotive-grade, thermally stable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Systems:\u003c\/strong\u003e BLUETTI power stations supporting 5,120Wh expansion modules (confirm specific compatibility with your BLUETTI power station model)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScalability:\u003c\/strong\u003e Multiple modules can be paralleled for major capacity scaling\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuild Quality:\u003c\/strong\u003e Designed for both RV and residential installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Standard BLUETTI battery warranty (verify exact term with BLUETTI dealer documentation)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat It Adds (capacity scaling)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle module (5,120Wh added):\u003c\/strong\u003e Nearly doubles a 2,764.8Wh power station's capacity — fridge + extended loads for 3-5 days\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo modules (10,240Wh added):\u003c\/strong\u003e Off-grid cabin daily storage at residential scale\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree modules (15,360Wh added):\u003c\/strong\u003e Multi-day whole-home backup capacity\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy LiFePO4 Per kWh Beats Lead-Acid\u003c\/h3\u003e\n\u003cp\u003eA 5,120Wh LiFePO4 battery delivers roughly 20× the lifetime energy of comparable lead-acid storage. Per kWh stored over the battery's life: lead-acid ~$0.13\/kWh, LiFePO4 ~$0.02\/kWh. The upfront price scares people. The per-kWh-over-lifespan math is what makes high-capacity LiFePO4 expansion the smart play for serious off-grid use.\u003c\/p\u003e\n\n\u003ch3\u003ePairs Well With\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/bluetti-apex-300\"\u003eBLUETTI Apex 300 — 3,840W Portable Power Station\u003c\/a\u003e — pair for major capacity expansion\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/bluetti-b300k-battery\"\u003eBLUETTI B300K Expansion Battery\u003c\/a\u003e — pair B500K with B300K for fine-tuned capacity sizing\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/bluetti-sora-220-solar-panel\"\u003eBLUETTI Sora 220 Solar Panel\u003c\/a\u003e — solar input to keep larger banks topped up\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/bluetti-pv100fx-solar-panel\"\u003eBLUETTI PV100FX Dual Solar Kit\u003c\/a\u003e — 200W folding solar for portable setups\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"margin-top:20px;\"\u003e\u003cstrong\u003eNot sure what size you need?\u003c\/strong\u003e Use our free \u003ca href=\"https:\/\/trailvault.co\/pages\/power-station-size-calculator\"\u003ePower Station Size Calculator\u003c\/a\u003e to get a personalized recommendation in under 2 minutes — factors in real-world appliance duty cycles so you don't undersize.\u003c\/p\u003e\n\n\u003ch3\u003eWarranty \u0026amp; Support\u003c\/h3\u003e\n\u003cp\u003eBLUETTI 5-year manufacturer warranty (2-year on accessory items like ePad). TrailVault is an authorized BLUETTI dealer — full warranty support, genuine products, and direct human contact at \u003ca href=\"mailto:joel@trailvault.co\"\u003ejoel@trailvault.co\u003c\/a\u003e.\u003c\/p\u003e","brand":"BLUETTI","offers":[{"title":"P090A","offer_id":51769152798852,"sku":"P-B500K1-US","price":1799.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0996\/3968\/9348\/files\/B500K-right-front.png?v=1778780589","url":"https:\/\/trailvault.co\/products\/bluetti-b500k-battery","provider":"TrailVault","version":"1.0","type":"link"}