{"product_id":"worx-wg1515-replacement-battery-18v-2000mah-li-ion","title":"Worx WA3512 18V Lawn Mower Replacement Battery 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eWorx WG151.5 \/ WG540 Series — 18V Li-ion Replacement Battery (WA3512)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 18V 2000mAh Li-ion battery replaces the Worx WA3512 and compatible OEM part numbers across the WG151.5, WG251.5, WG540, WG151, and 139+ additional Worx 18V cordless tools. The pack slots into the same battery port and communicates with the same BMS interface as the original. Capacity is 2000mAh (36Wh) — matching the factory spec.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eWG151.5 and WG540 platform fit:\u003c\/strong\u003e\n    These models share the same 18V battery rail, terminal layout, and BMS handshake protocol. One pack works across the full line — no adapter, no wiring difference between mower and multi-tool variants on this voltage platform.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through repeated motor-start inrush events on a WG540-class tool and monitored the BMS overcurrent response. The protection circuit held within spec on each trigger pull without nuisance tripping under normal load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst two cycles on a mower deck:\u003c\/strong\u003e\n    Run the mower at a reduced cutting height on the first two charges — shorter grass, lower motor load. This lets the BMS profile the blade motor's inrush signature before it sets its overcurrent cutoff thresholds for heavier cutting passes.\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 it trips on the first pull\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eCordless mower motors draw a spike of current in the first 80–150ms of startup — often 3–5× the steady-state draw. A new pack's BMS has not yet profiled the specific motor's inrush signature, so its overcurrent threshold sits at a conservative default. If the deck engages into thick or damp grass on the first run, that spike can push past the threshold and trip the protection circuit before the motor reaches operating speed. Two light-load startup cycles recalibrate the BMS profile and eliminate most nuisance trips on subsequent heavy cuts.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCharger blinking red on a new or stored 18V pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eWorx 18V chargers reject packs where individual cell voltage has dropped below approximately 2.5V per cell during storage — the charger reads this as a fault rather than a dischargeable battery. This happens to packs that sat unused for several months. To recover the pack, some Worx chargers support a trickle wake-up mode: remove and reseat the pack three times in quick succession to prompt the charger to attempt a low-current pre-charge cycle. If the charger still blinks red after 10 minutes, check cell voltage at the pack terminals — a reading below 14V across all cells confirms deep discharge; at that point, replace the pack rather than force-charge it.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416047026266,"sku":"BWCS-WRX540PX-1","price":78.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416047059034,"sku":"BWCS-WRX540PX-2","price":91.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416047091802,"sku":"BWCS-WRX540PX-3","price":101.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-WRX540PX-1.webp?v=1779759709","url":"https:\/\/batteryweb.com\/products\/worx-wg1515-replacement-battery-18v-2000mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}