{"product_id":"sigenergy-sigenstack-battery-controller-m2-0-5c-boost-bst-c-i-stack-control","title":"Sigenergy SigenStack Battery Controller M2-0.5C BOOST BST | C\u0026I Stack Control","description":"\u003cstyle\u003e\n.qh-pd, .qh-pd *::before, .qh-pd *::after { box-sizing: border-box; margin: 0; padding: 0; }\n.qh-pd { font-family: inherit; font-size: 16px; line-height: 1.65; color: #1a1a2e; }\n.qh-pd .badge-row { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 1.2rem; }\n.qh-pd .badge { display: inline-block; font-size: 11px; font-weight: 700; border-radius: 4px; padding: 3px 9px; letter-spacing: 0.04em; text-transform: uppercase; }\n.qh-pd .b-orange { background: #e8720c; color: #fff; }\n.qh-pd .b-navy   { background: #1a1a2e; color: #fff; }\n.qh-pd .b-green  { background: #1b7a40; color: #fff; }\n.qh-pd .b-blue   { background: #1565c0; color: #fff; }\n.qh-pd .b-teal   { background: #006064; color: #fff; }\n.qh-pd .b-purple { background: #6a1b9a; color: #fff; }\n.qh-pd .b-red    { background: #b71c1c; color: #fff; }\n.qh-pd .b-grey   { background: #555;    color: #fff; }\n.qh-pd .prod-desc { font-size: 15.5px; color: #2a2a2a; margin-bottom: 1.4rem; line-height: 1.75; }\n.qh-pd .feat-list { list-style: none; margin-bottom: 1.4rem; padding: 0; }\n.qh-pd .feat-list li { padding: 4px 0 4px 20px; position: relative; font-size: 15px; }\n.qh-pd .feat-list li::before { content: \"✓\"; position: absolute; left: 0; color: #e8720c; font-weight: 700; }\n.qh-pd .section-label { font-size: 11px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: #888; margin-bottom: 0.6rem; margin-top: 1.6rem; }\n.qh-pd .table-scroll { width: 100%; overflow-x: auto; -webkit-overflow-scrolling: touch; margin-bottom: 1.5rem; border-radius: 8px; box-shadow: 0 1px 4px rgba(0,0,0,0.08); }\n.qh-pd .variant-table { width: 100%; border-collapse: collapse; font-size: 13px; min-width: 480px; }\n.qh-pd .variant-table thead tr { background: #1a1a2e; color: #fff; }\n.qh-pd .variant-table th { padding: 9px 12px; text-align: left; font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase; font-weight: 700; white-space: nowrap; }\n.qh-pd .variant-table td { padding: 9px 12px; border-bottom: 1px solid #eee; vertical-align: top; }\n.qh-pd .variant-table tr:last-child td { border-bottom: none; }\n.qh-pd .variant-table tr:nth-child(even) td { background: #faf8f4; }\n.qh-pd .variant-table tr:nth-child(odd)  td { background: #fff; }\n.qh-pd .sku  { font-family: 'Courier New', monospace; font-size: 11.5px; background: #f0f0f0; padding: 2px 5px; border-radius: 3px; word-break: break-all; display: inline-block; }\n.qh-pd .mpn  { font-family: 'Courier New', monospace; font-size: 11.5px; color: #e8720c; font-weight: 700; word-break: break-word; }\n.qh-pd .power { font-weight: 700; color: #1a1a2e; white-space: nowrap; }\n.qh-pd .note  { font-size: 12px; color: #666; }\n.qh-pd .spec-table { width: 100%; border-collapse: collapse; margin-bottom: 1.5rem; font-size: 14px; }\n.qh-pd .spec-table td { padding: 8px 12px; border-bottom: 1px solid #eee; vertical-align: top; }\n.qh-pd .spec-table tr:nth-child(even) td { background: #faf8f4; }\n.qh-pd .spec-table tr:nth-child(odd)  td { background: #fff; }\n.qh-pd .spec-table td:first-child { font-weight: 600; color: #333; width: 38%; }\n.qh-pd .callout { padding: 0.8rem 1.1rem; border-radius: 0 6px 6px 0; margin: 0.8rem 0; font-size: 14.5px; }\n.qh-pd .callout-orange { background: #fff3e0; border-left: 4px solid #e8720c; color: #4a2500; }\n.qh-pd .callout-blue   { background: #e8f4fd; border-left: 4px solid #1565c0; color: #0a2a50; }\n.qh-pd .callout-green  { background: #e8f5e9; border-left: 4px solid #1b7a40; color: #0a2a18; }\n.qh-pd .callout-red    { background: #fdecea; border-left: 4px solid #b71c1c; color: #4a0a0a; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"qh-pd\"\u003e\n\n  \u003cdiv class=\"badge-row\"\u003e\n    \u003cspan class=\"badge b-navy\"\u003eSigenStack C\u0026amp;I\u003c\/span\u003e\n    \u003cspan class=\"badge b-orange\"\u003eBattery Controller\u003c\/span\u003e\n    \u003cspan class=\"badge b-red\"\u003eBOOST — Voltage Boost for Start-Up\u003c\/span\u003e\n    \u003cspan class=\"badge b-green\"\u003eIP66\u003c\/span\u003e\n    \u003cspan class=\"badge b-blue\"\u003e550–1100V Range\u003c\/span\u003e\n    \u003cspan class=\"badge b-grey\"\u003e0.5C Rate\u003c\/span\u003e\n  \u003c\/div\u003e\n\n  \u003cp class=\"prod-desc\"\u003e\n    The SigenStack Battery Controller M2-0.5C BOOST (BST) is the intelligent power management unit required in every SigenStack installation where the system includes PV or contains fewer than 19 battery modules. The \"BST\" (Boost) designation indicates its key differentiating capability: it can boost battery voltage up to the start-up voltage required by the Sigen C\u0026amp;I Hybrid Inverter, allowing the system to start from battery alone — without relying on the PV array to initiate the boot sequence. This is essential for systems with PV (all solar-plus-storage installations) and for smaller stacks below the 19-module threshold where battery voltage alone may not reach inverter start-up levels. The controller operates across a 550–1100V DC voltage range, delivers a nominal 157A charge\/discharge current, and communicates via CAN protocol. Built-in aerosol fire suppression, thermal runaway protection, and IP66 housing maintain the safety standards expected of commercial energy storage.\n  \u003c\/p\u003e\n\n  \u003cul class=\"feat-list\"\u003e\n    \u003cli\u003eBOOST capability — boosts battery voltage to inverter start-up voltage; essential for all PV systems\u003c\/li\u003e\n    \u003cli\u003eRequired for systems with PV, or stacks with fewer than 19 battery modules\u003c\/li\u003e\n    \u003cli\u003e157A nominal charge\/discharge current — stable, high-efficiency power management\u003c\/li\u003e\n    \u003cli\u003e180A maximum output current — headroom for peak demand events\u003c\/li\u003e\n    \u003cli\u003e550–1100V DC operating range — compatible with all SigenStack battery configurations\u003c\/li\u003e\n    \u003cli\u003eCAN communication — seamless integration with Sigen C\u0026amp;I Hybrid Inverter Series\u003c\/li\u003e\n    \u003cli\u003eIP66 rated — dust and water protection for indoor and outdoor deployment\u003c\/li\u003e\n    \u003cli\u003eBuilt-in aerosol fire suppression and thermal runaway control\u003c\/li\u003e\n    \u003cli\u003eSmart air cooling for optimal temperature regulation and extended service life\u003c\/li\u003e\n    \u003cli\u003eCompact: 770 × 248 × 363 mm — installs within the SigenStack stack footprint\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003cdiv class=\"callout callout-red\"\u003e\n    ⚠️ \u003cstrong\u003eBST is required if:\u003c\/strong\u003e (1) the installation includes a PV array — always use the BST variant; or (2) the stack contains fewer than 19 battery modules. For standalone battery-only systems with 19 or more modules, the standard BC M2-0.5C (without BST) may be used instead. When in doubt, specify the BST variant — it works in all configurations.\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"section-label\"\u003eTechnical Specifications\u003c\/div\u003e\n  \u003ctable class=\"spec-table\"\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003e\u003cspan class=\"sku\"\u003eSIG-STACK-BC-M2-0.5C-BST\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eManufacturer MPN\u003c\/td\u003e\n\u003ctd\u003eSigenStack BC M2-0.5C-BST\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBOOST Function\u003c\/td\u003e\n\u003ctd\u003eBoosts battery voltage to inverter start-up voltage\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWhen Required\u003c\/td\u003e\n\u003ctd\u003eAll PV systems · stacks with \u0026lt;19 battery modules\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eNominal Charge\/Discharge Current\u003c\/td\u003e\n\u003ctd\u003e157A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMaximum Output Current\u003c\/td\u003e\n\u003ctd\u003e180A\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Voltage Range\u003c\/td\u003e\n\u003ctd\u003e550V – 1100V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCharge\/Discharge Rate\u003c\/td\u003e\n\u003ctd\u003e0.5C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCommunication Protocol\u003c\/td\u003e\n\u003ctd\u003eCAN — Sigen C\u0026amp;I Hybrid Inverter Series\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eProtection Rating\u003c\/td\u003e\n\u003ctd\u003eIP66\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eSafety\u003c\/td\u003e\n\u003ctd\u003eAerosol fire suppression · thermal runaway control\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eCooling\u003c\/td\u003e\n\u003ctd\u003eSmart air cooling\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e770 × 248 × 363 mm (W × H × D)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\n\u003c\/div\u003e","brand":"Sigenergy","offers":[{"title":"Default Title","offer_id":63629847101789,"sku":"SIG-STACK-BC-M2-0.5C-BST","price":4100.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/2051\/3629\/files\/Sigenergy-SigenStack-BC-M2-0-5C-BST.png?v=1772108849","url":"https:\/\/qualityheating.co.uk\/products\/sigenergy-sigenstack-battery-controller-m2-0-5c-boost-bst-c-i-stack-control","provider":"AIZO Quality Heating","version":"1.0","type":"link"}