{"product_id":"foil-drive-fm-650-battery","title":"Foil Drive FM+ 650 Battery","description":"\u003c!--\nSHOPIFY PRODUCT TITLE: Foil Drive FM+ 650 Battery\nSEO PAGE TITLE: Foil Drive FM+ 650 Battery (648Wh) | Windance\nMETA DESCRIPTION: Foil Drive FM+ 650 Battery: 648Wh for Assist MAX+ or Fusion with an FM+ adaptor. Includes a carry case; requires a compatible 43V charger.\n\nPaste the HTML below into the product description editor. Enter SEO title\nand meta description separately under Search engine listing in Shopify.\nThe product template supplies the H1; this description starts at H2.\n--\u003e\n\u003cstyle\u003e\n  .fd-fm650{font-family:inherit;line-height:1.55;color:inherit}\n  .fd-fm650 *{box-sizing:border-box}\n  .fd-fm650 .fd-wrap{max-width:920px;margin:0 auto}\n  .fd-fm650 .fd-hero{padding:22px 0 6px}\n  .fd-fm650 .fd-kicker{margin:0 0 10px;font-size:14px;letter-spacing:.08em;text-transform:uppercase;opacity:.75}\n  .fd-fm650 .fd-title{margin:0 0 10px;font-size:clamp(27px,4vw,34px);line-height:1.15}\n  .fd-fm650 .fd-sub{margin:0 0 16px;font-size:18px;opacity:.92}\n  .fd-fm650 .fd-lead{margin:0;font-size:16px}\n  .fd-fm650 .fd-lead+.fd-lead{margin-top:12px}\n  .fd-fm650 .fd-badges{display:flex;flex-wrap:wrap;gap:10px;margin:16px 0 0;padding:0;list-style:none}\n  .fd-fm650 .fd-badge{padding:6px 10px;border:1px solid rgba(0,0,0,.12);border-radius:999px;font-size:13px;opacity:.9}\n  .fd-fm650 .fd-divider{height:1px;margin:20px 0 0;background:rgba(0,0,0,.10)}\n  .fd-fm650 .fd-section{padding:18px 0}\n  .fd-fm650 .fd-section-title{margin:0 0 18px;font-size:clamp(23px,3vw,28px);font-weight:700;letter-spacing:-.02em}\n  .fd-fm650 .fd-section-title::after{display:block;width:48px;height:3px;margin-top:8px;border-radius:2px;background:linear-gradient(90deg,#111,#777);content:\"\"}\n  .fd-fm650 .fd-grid{display:grid;grid-template-columns:1fr;gap:14px}\n  @media(min-width:768px){.fd-fm650 .fd-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}\n  .fd-fm650 .fd-card{padding:18px 18px 20px;border:1px solid rgba(0,0,0,.12);border-radius:16px;background:linear-gradient(180deg,rgba(0,0,0,.02),transparent)}\n  .fd-fm650 .fd-feature-title{display:flex;gap:10px;align-items:center;margin:0 0 8px;font-size:1.2rem;font-weight:700;letter-spacing:-.01em}\n  .fd-fm650 .fd-feature-title::before{content:attr(data-num);font-size:12px;font-weight:600;letter-spacing:.08em;opacity:.5}\n  .fd-fm650 .fd-feature-text{margin:0;font-size:15px;line-height:1.55;opacity:.9}\n  .fd-fm650 .fd-list{margin:10px 0 0;padding-left:20px}\n  .fd-fm650 .fd-list li{margin:6px 0}\n  .fd-fm650 .fd-note{margin:12px 0 0;padding:12px 14px;border-left:4px solid rgba(0,0,0,.24);border-radius:10px;background:rgba(0,0,0,.03)}\n  .fd-fm650 .fd-warning{margin:12px 0 0;padding:14px 16px;border-left:4px solid #b42318;border-radius:10px;background:rgba(180,35,24,.06)}\n  .fd-fm650 .fd-compare-wrap{overflow-x:auto;border:1px solid rgba(0,0,0,.12);border-radius:14px}\n  .fd-fm650 .fd-table{width:100%;min-width:590px;border-collapse:collapse}\n  .fd-fm650 .fd-table th,.fd-fm650 .fd-table td{padding:12px;border-bottom:1px solid rgba(0,0,0,.10);text-align:left;vertical-align:top}\n  .fd-fm650 .fd-table thead th{background:rgba(0,0,0,.04);font-size:13px;letter-spacing:.04em;text-transform:uppercase}\n  .fd-fm650 .fd-table tbody tr:last-child th,.fd-fm650 .fd-table tbody tr:last-child td{border-bottom:0}\n  .fd-fm650 .fd-faq{padding:14px 0;border-top:1px solid rgba(0,0,0,.10)}\n  .fd-fm650 .fd-faq:first-of-type{padding-top:0;border-top:0}\n  .fd-fm650 .fd-faq h4{margin:0 0 6px;font-size:18px}\n  .fd-fm650 .fd-faq p{margin:0}\n  .fd-fm650 a{color:inherit;text-decoration:underline;text-underline-offset:3px}\n  .fd-fm650 a:focus-visible{outline:3px solid #b42318;outline-offset:3px}\n\u003c\/style\u003e\n\n\u003cdiv class=\"fd-fm650\"\u003e\n  \u003cdiv class=\"fd-wrap\"\u003e\n    \u003csection class=\"fd-hero\" aria-labelledby=\"fd-fm650-title\"\u003e\n      \u003cp class=\"fd-kicker\"\u003eFoil Drive • Gen2.5 • FD401\u003c\/p\u003e\n      \u003ch2 class=\"fd-title\" id=\"fd-fm650-title\"\u003eFoil Drive FM+ 650 Battery\u003c\/h2\u003e\n      \u003cp class=\"fd-sub\"\u003e\u003cstrong\u003e648Wh of battery capacity for Assist MAX+ and Fusion.\u003c\/strong\u003e\u003c\/p\u003e\n      \u003cp class=\"fd-lead\"\u003e\n        The FM+ 650 is a 43.2V battery built for Foil Drive's Gen2.5 systems. It fits the Assist MAX+ directly. For the longer Fusion unit, pair it with the separately available FM+ Battery Adaptor. That gives Fusion riders a lighter battery option than the Fusion 860 and lets riders with both systems share one FM+ 650 battery.\n      \u003c\/p\u003e\n      \u003cp class=\"fd-lead\"\u003e\n        The sealed, one-piece battery includes an integrated nose cone and an intelligent battery management system that reports charge information to the V3 Controller and Foil Drive App. \u003cstrong\u003eThis battery is not compatible with the Gen2 Assist MAX.\u003c\/strong\u003e\n      \u003c\/p\u003e\n      \u003cul class=\"fd-badges\" aria-label=\"Product highlights\"\u003e\n        \u003cli class=\"fd-badge\"\u003e648Wh • 15Ah\u003c\/li\u003e\n        \u003cli class=\"fd-badge\"\u003e43.2V Gen2.5\u003c\/li\u003e\n        \u003cli class=\"fd-badge\"\u003e3.95 kg \/ 8.7 lb\u003c\/li\u003e\n        \u003cli class=\"fd-badge\"\u003eDirect Fit for MAX+\u003c\/li\u003e\n        \u003cli class=\"fd-badge\"\u003eFusion: Adaptor Required\u003c\/li\u003e\n      \u003c\/ul\u003e\n      \u003cdiv class=\"fd-divider\"\u003e\u003c\/div\u003e\n    \u003c\/section\u003e\n\n    \u003csection class=\"fd-section\" aria-labelledby=\"fd-fm650-benefits\"\u003e\n      \u003ch3 class=\"fd-section-title\" id=\"fd-fm650-benefits\"\u003eWhy Choose the FM+ 650?\u003c\/h3\u003e\n      \u003cdiv class=\"fd-grid\"\u003e\n        \u003cdiv class=\"fd-card\"\u003e\n          \u003ch4 class=\"fd-feature-title\" data-num=\"01\"\u003eOne Battery, Two Systems\u003c\/h4\u003e\n          \u003cp class=\"fd-feature-text\"\u003eUse the FM+ 650 in Assist MAX+ as supplied, or add the FD330 FM+ Battery Adaptor to fit it into a Fusion unit.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"fd-card\"\u003e\n          \u003ch4 class=\"fd-feature-title\" data-num=\"02\"\u003e648Wh Capacity\u003c\/h4\u003e\n          \u003cp class=\"fd-feature-text\"\u003eDesigned for longer surf sessions, assisted upwind access, wake riding and flatwater starts, with 15Ah of rated capacity.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"fd-card\"\u003e\n          \u003ch4 class=\"fd-feature-title\" data-num=\"03\"\u003eBattery Data at a Glance\u003c\/h4\u003e\n          \u003cp class=\"fd-feature-text\"\u003eThe built-in battery management system shares charge level, status and health information with the V3 Controller and Foil Drive App.\u003c\/p\u003e\n        \u003c\/div\u003e\n        \u003cdiv class=\"fd-card\"\u003e\n          \u003ch4 class=\"fd-feature-title\" data-num=\"04\"\u003eIntegrated Nose Cone\u003c\/h4\u003e\n          \u003cp class=\"fd-feature-text\"\u003eThe molded battery and nose cone form a single unit for a clean fit and water flow around the installed battery.\u003c\/p\u003e\n        \u003c\/div\u003e\n      \u003c\/div\u003e\n    \u003c\/section\u003e\n\n    \u003csection class=\"fd-section\" aria-labelledby=\"fd-fm650-included\"\u003e\n      \u003ch3 class=\"fd-section-title\" id=\"fd-fm650-included\"\u003eWhat’s Included — and What You Still Need\u003c\/h3\u003e\n      \u003cul class=\"fd-list\"\u003e\n        \u003cli\u003eOne Foil Drive FM+ 650 Battery (FD401)\u003c\/li\u003e\n        \u003cli\u003eFM+ 650 Battery Carry Case\u003c\/li\u003e\n      \u003c\/ul\u003e\n      \u003cdiv class=\"fd-warning\"\u003e\n        \u003cstrong\u003eBattery only.\u003c\/strong\u003e The Foil Drive system, 43V charger, Fusion FM+ Battery Adaptor and Battery Caddy are not included. You need a compatible 43V Foil Drive charger to recharge the battery.\n      \u003c\/div\u003e\n      \u003cdiv class=\"fd-note\"\u003e\n        \u003cstrong\u003eUsing Fusion?\u003c\/strong\u003e The FM+ 650 needs the FM+ Battery Adaptor to fit the longer Fusion unit. Check whether your Fusion kit already includes the adaptor before ordering one separately. The battery also works with the Foil Drive Battery Caddy when paired with the FM+ adaptor.\n      \u003c\/div\u003e\n    \u003c\/section\u003e\n\n    \u003csection class=\"fd-section\" aria-labelledby=\"fd-fm650-specs\"\u003e\n      \u003ch3 class=\"fd-section-title\" id=\"fd-fm650-specs\"\u003eKey Specifications\u003c\/h3\u003e\n      \u003cdiv class=\"fd-compare-wrap\" role=\"region\" aria-label=\"Foil Drive FM+ 650 battery specifications\" tabindex=\"0\"\u003e\n        \u003ctable class=\"fd-table\"\u003e\n          \u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003eSpecification\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eFM+ 650 Battery\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n          \u003ctbody\u003e\n            \u003ctr\u003e\n\u003cth scope=\"row\"\u003eRated capacity\u003c\/th\u003e\n\u003ctd\u003e648Wh \/ 15Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n            \u003ctr\u003e\n\u003cth scope=\"row\"\u003eNominal voltage\u003c\/th\u003e\n\u003ctd\u003e43.2V (50.4V maximum)\u003c\/td\u003e\n\u003c\/tr\u003e\n            \u003ctr\u003e\n\u003cth scope=\"row\"\u003eBattery weight\u003c\/th\u003e\n\u003ctd\u003e3.95 kg \/ 8.70 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n            \u003ctr\u003e\n\u003cth scope=\"row\"\u003eBattery dimensions\u003c\/th\u003e\n\u003ctd\u003e460 × 125 × 55 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n            \u003ctr\u003e\n\u003cth scope=\"row\"\u003eLength installed in MAX+\u003c\/th\u003e\n\u003ctd\u003e540 mm (overall installed dimensions: 540 × 125 × 55 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n            \u003ctr\u003e\n\u003cth scope=\"row\"\u003eLength installed in Fusion\u003c\/th\u003e\n\u003ctd\u003e658 mm with FM+ adaptor (overall installed dimensions: 658 × 125 × 55 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n            \u003ctr\u003e\n\u003cth scope=\"row\"\u003eTypical charge time\u003c\/th\u003e\n\u003ctd\u003eAbout 85 minutes with a compatible 43V charger; actual time varies\u003c\/td\u003e\n\u003c\/tr\u003e\n            \u003ctr\u003e\n\u003cth scope=\"row\"\u003eFoil Drive SKU \/ GTIN\u003c\/th\u003e\n\u003ctd\u003eFD401 \/ 9361123003493\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003c\/tbody\u003e\n        \u003c\/table\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"fd-note\"\u003e\n        \u003cstrong\u003eCapacity versus name:\u003c\/strong\u003e “650” is the battery model name. Foil Drive lists its rated capacity as 648Wh.\n      \u003c\/div\u003e\n    \u003c\/section\u003e\n\n    \u003csection class=\"fd-section\" aria-labelledby=\"fd-fm650-runtime\"\u003e\n      \u003ch3 class=\"fd-section-title\" id=\"fd-fm650-runtime\"\u003eFoil Drive’s Indicative Runtime\u003c\/h3\u003e\n      \u003cp\u003eThese figures come from Foil Drive’s FD401 test scenarios. They describe a complete setup and riding conditions, not a guaranteed session length for every rider.\u003c\/p\u003e\n      \u003cdiv class=\"fd-compare-wrap\" role=\"region\" aria-label=\"Foil Drive indicative runtimes with FM+ 650\" tabindex=\"0\"\u003e\n        \u003ctable class=\"fd-table\"\u003e\n          \u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\"\u003eActivity\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eIntermediate rider\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eAdvanced rider\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n          \u003ctbody\u003e\n            \u003ctr\u003e\n\u003cth scope=\"row\"\u003eE-foiling\u003c\/th\u003e\n\u003ctd\u003eAbout 31 minutes\u003c\/td\u003e\n\u003ctd\u003eAbout 52 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n            \u003ctr\u003e\n\u003cth scope=\"row\"\u003eSurf foiling\u003c\/th\u003e\n\u003ctd\u003eAbout 40–50 minutes\u003c\/td\u003e\n\u003ctd\u003eAbout 55–70 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003c\/tbody\u003e\n        \u003c\/table\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"fd-note\"\u003e\n        \u003cstrong\u003eTest conditions:\u003c\/strong\u003e Foil Drive used an 80 kg rider, 800 cm² wing and 5'0\" \/ 40 L board. The e-foil estimate used flat water at about 70% throttle. The surf estimate used 3 ft swell and wind below 5 knots. Results change with rider weight, skill, foil and board size, motor use and conditions.\n      \u003c\/div\u003e\n    \u003c\/section\u003e\n\n    \u003csection class=\"fd-section\" aria-labelledby=\"fd-fm650-compatibility\"\u003e\n      \u003ch3 class=\"fd-section-title\" id=\"fd-fm650-compatibility\"\u003eCompatibility and Battery Care\u003c\/h3\u003e\n      \u003cul class=\"fd-list\"\u003e\n        \u003cli\u003e\n\u003cstrong\u003eAssist MAX+:\u003c\/strong\u003e The FM+ 650 fits directly; no battery adaptor is needed.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eFoil Drive Fusion:\u003c\/strong\u003e Requires the FM+ Battery Adaptor (FD330) to fit the shorter battery in the longer unit.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eFoil Drive Battery Caddy:\u003c\/strong\u003e Use the FM+ Battery Adaptor when fitting the FM+ 650 to the caddy.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eCharging:\u003c\/strong\u003e Use a compatible Foil Drive 43V charger. The charger is sold separately from this replacement battery.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eGen2 Assist MAX:\u003c\/strong\u003e Not compatible. A battery adaptor does not make this Gen2.5 battery work with a Gen2 MAX unit.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eStorage:\u003c\/strong\u003e Follow the battery and charger manuals; Foil Drive recommends storing the battery at 30–60% state of charge.\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/section\u003e\n\n    \u003csection class=\"fd-section\" aria-labelledby=\"fd-fm650-faq\"\u003e\n      \u003ch3 class=\"fd-section-title\" id=\"fd-fm650-faq\"\u003eFrequently Asked Questions\u003c\/h3\u003e\n      \u003cdiv class=\"fd-faq\"\u003e\n        \u003ch4\u003eIs the FM+ 650 compatible with my Assist MAX+?\u003c\/h4\u003e\n        \u003cp\u003eYes. The FM+ 650 fits Assist MAX+ directly. It is not compatible with the older Gen2 Assist MAX.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"fd-faq\"\u003e\n        \u003ch4\u003eCan I use it in Foil Drive Fusion?\u003c\/h4\u003e\n        \u003cp\u003eYes, with the FM+ Battery Adaptor (FD330). Check your Fusion kit first; you may already have the adaptor.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"fd-faq\"\u003e\n        \u003ch4\u003eDoes the battery come with a charger or adaptor?\u003c\/h4\u003e\n        \u003cp\u003eNo. Foil Drive lists the FM+ 650 Battery and its carry case in the package. The 43V charger and Fusion adaptor are separate.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"fd-faq\"\u003e\n        \u003ch4\u003eWhy does the battery say 650 if it is rated at 648Wh?\u003c\/h4\u003e\n        \u003cp\u003eFM+ 650 is the model name. Its manufacturer-listed capacity is 648Wh.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"fd-faq\"\u003e\n        \u003ch4\u003eHow long will it run?\u003c\/h4\u003e\n        \u003cp\u003eFoil Drive’s indicative figures range from about 31–52 minutes for e-foiling and 40–70 minutes for surf foiling in its stated test setups. Your riding time will vary with conditions and how much you use the motor.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/section\u003e\n\n    \u003csection class=\"fd-section\" aria-labelledby=\"fd-fm650-help\"\u003e\n      \u003ch3 class=\"fd-section-title\" id=\"fd-fm650-help\"\u003eNeed Help Checking Your Setup?\u003c\/h3\u003e\n      \u003cp\u003eTell us whether you ride a MAX+ or Fusion and which charger and battery adaptor you already have. We can help check the parts before you order. \u003ca href=\"mailto:windance@windance.com?subject=Foil%20Drive%20FM%2B%20650%20Battery%20Compatibility\"\u003eEmail Windance\u003c\/a\u003e or call \u003ca href=\"tel:+18005744020\"\u003e1-800-574-4020\u003c\/a\u003e.\u003c\/p\u003e\n    \u003c\/section\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Foil Drive Assist","offers":[{"title":"Default Title","offer_id":52685096714536,"sku":"210000056882","price":1349.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0709\/1627\/6520\/files\/ywjvabyqt6kx4ebcjypt_535f4bc8-bd4e-4ddc-92c9-5c962030ea87.png?v=1790040072","url":"https:\/\/www.windance.com\/products\/foil-drive-fm-650-battery","provider":"Windance","version":"1.0","type":"link"}