{"product_id":"flymo-contour-cordless-xt-replacement-battery-18v-2500mah-li-ion","title":"18V Flymo Contour Cordless XT Replacement Battery 2500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eFlymo Grass Trimmer \u0026amp; Lawn Edger — 18V Li-ion Replacement Battery\u003c\/h2\u003e\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 18V 2500mAh Li-ion battery replaces part numbers 577507001 and CCT250-3 across a range of Flymo cordless garden tools. It fits the Contour Cordless XT — a 2-in-1 grass trimmer and lawn edger — along with the Easicut 420, Easicut 500, and SimpliStore 300. Rated at 45Wh, it matches the original voltage rail these tools require.\u003c\/p\u003e\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCross-model compatibility — Flymo 18V platform:\u003c\/strong\u003e The Contour Cordless XT, Easicut, and SimpliStore models share the same 18V connector and BMS handshake, which is why one battery pack covers the full range.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e We ran full charge\/discharge cycles — the BMS held voltage steady under trimmer load and cut off cleanly at the low-voltage threshold without tripping a fault state.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge after storage:\u003c\/strong\u003e If the pack has been sitting, run a full charge before first use — Li-ion cells at low state of charge benefit from a complete conditioning cycle before being put under load.\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003chr class=\"bpw-desc-divider\"\u003e\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy voltage stability matters for automatic line feed\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Contour Cordless XT uses an automatic dual-line feed system that advances line based on motor speed sensing. Voltage sag from a weak or mismatched battery can cause the system to misread motor load and overfeed or underfeed line. A stable 18V delivery keeps the feed mechanism responding correctly. This pack's BMS actively regulates output to stay within the motor's expected voltage window.\u003c\/p\u003e\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTrimmer not turning on after battery swap — here's the fix\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the trimmer stays silent after fitting the new battery, the BMS may have shipped in a protective sleep state triggered by low cell voltage during transit. Seat the battery fully, connect it to the charger for 10–15 minutes, then retry. A solid charge indicator confirms the cells have woken and the pack is ready to use.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43175815020634,"sku":"BWCS-FYM420PX-1","price":80.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43175815053402,"sku":"BWCS-FYM420PX-2","price":93.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43175815086170,"sku":"BWCS-FYM420PX-3","price":103.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-FYM420PX-1.webp?v=1775236243","url":"https:\/\/batteryweb.com\/products\/flymo-contour-cordless-xt-replacement-battery-18v-2500mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}