{"product_id":"al-ko-easy-flex-348-li-lawnmower-replacement-battery-20v-2000mah-li-ion","title":"AL-KO B50 20V Replacement Battery 2000mAh Li-ion Easy Flex","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAL-KO Easy Flex Series — 20V Li-ion Replacement Battery (B50)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 20V, 2000mAh (40Wh) lithium-ion battery compatible with the AL-KO Easy Flex platform. It fits the Easy Flex 34.8 Li Lawnmower, GT 2025 Grass Trimmer, HT 2050 Hedge Trimmer, HTA 2050 Long Reach Hedge Trimmer, and 30+ other Easy Flex tools that accept the B50 pack. OEM part numbers: B50, 113559, Easy Flex B50.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEasy Flex platform compatibility:\u003c\/strong\u003e\n    All tools listed share the same 20V rail, B50 form factor, and BMS handshake protocol. The connector and latch geometry are identical across the range, so one pack works across the full Easy Flex line without adapters.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through repeated charge and load cycles on Easy Flex platform tools. The BMS handled motor-start inrush current without tripping, held voltage under sustained cutting load, and communicated correctly with the AL-KO charger throughout.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eLawnmower blade-start conditioning:\u003c\/strong\u003e\n    On first use, mow two passes at a moderate pace before tackling thick or wet grass. This lets the BMS log the blade motor's inrush current spike and calibrate its overcurrent threshold before you push it into heavy-resistance cutting.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBMS cutoff on blade motor start inrush — why the 34.8 Li trips mid-lawn\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eWhen the blade engages, the motor draws a short inrush spike — often three to five times the running current — before it reaches speed. A BMS that hasn't profiled this tool will sometimes read that spike as a fault and cut power instantly. This is not a dead battery; it is an overcurrent protection trigger. Two or three normal start cycles allow the BMS to adjust its threshold, and the cutouts stop. If the problem persists after conditioning, check that the pack contacts are clean and fully seated in the tool's battery slot.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCharger blinking red on a new B50 pack after storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells drop below the charger's acceptance voltage during extended storage — typically under 2.5V per cell. When that happens, the AL-KO charger sees the pack as faulty and blinks red instead of beginning a normal charge cycle. Some chargers include a recovery or \"boost\" mode that trickle-charges at low current until the cells climb above the acceptance threshold. If your charger lacks this mode, a compatible charger with boost function can recover the pack. Target cell voltage for normal charge acceptance is approximately 3.0V per cell or above.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381301641306,"sku":"BWCS-WRX352PW-1","price":74.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381301674074,"sku":"BWCS-WRX352PW-2","price":87.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381301706842,"sku":"BWCS-WRX352PW-3","price":96.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-WRX352PW-1.webp?v=1779759628","url":"https:\/\/batteryweb.com\/products\/al-ko-easy-flex-348-li-lawnmower-replacement-battery-20v-2000mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}