{"product_id":"greenworks-gc82lm46-replacement-battery-82v-4000mah-li-ion","title":"82V GreenWorks Cordless Lawn Mower Replacement Battery G82B25","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eGreenWorks 82V Cordless Lawn Mower \u0026amp; Outdoor Power Tools — 82V Li-ion Replacement Battery\u003c\/h2\u003e\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is an 82V 4000mAh (328Wh) lithium-ion replacement battery for the GreenWorks 82V cordless power platform. It fits the GC82LM46 lawn mower and a range of tools including the GC82BC, GC82CS chainsaw, and 17+ additional models. One battery platform, multiple tools — that's the point of the 82V system.\u003c\/p\u003e\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e82V platform compatibility:\u003c\/strong\u003e The G82B25, GL250, GL400, GL500, GL600, and GL900 all share the same 82V rail, connector format, and BMS communication protocol — which is why this single pack covers the full lineup.\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 motor load and cut off cleanly at the low-voltage threshold without tripping the tool's protection circuit.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFirst use on a brushless mower motor:\u003c\/strong\u003e Run a full charge before the first cut. Brushless motors draw higher peak current than brushed equivalents, so a partial charge on first use stresses the cells unevenly from the start.\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003chr class=\"bpw-desc-divider\"\u003e\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy 82V matters for a 46cm cutting deck\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA 46cm deck pulling through thick or damp grass puts real sustained load on the motor. The 82V platform keeps current draw lower at equivalent power output compared to a 40V or 60V system, which reduces heat build-up in both the cells and the motor windings. At 328Wh, this pack has enough capacity to handle the GC82LM46's rated coverage area without the voltage sagging mid-job. Cell voltage stability under load is what keeps the brushless motor controller from throttling back output.\u003c\/p\u003e\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery not recognised by the tool — what's happening and how to fix it\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the mower or chainsaw shows a flashing fault light immediately after inserting the battery, the BMS handshake has failed. This usually happens when the battery has been stored discharged — the cell voltage drops below the tool's minimum recognition threshold. Connect the battery to a compatible 82V charger and leave it for 15–20 minutes before reinserting. Most GreenWorks 82V chargers include a recovery mode that trickle-charges deeply discharged packs back into the normal operating window.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43175813611610,"sku":"BWCS-GWP820PW-1","price":270.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43175813644378,"sku":"BWCS-GWP820PW-2","price":321.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43175813677146,"sku":"BWCS-GWP820PW-3","price":360.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-GWP820PW-1.webp?v=1775236275","url":"https:\/\/batteryweb.com\/products\/greenworks-gc82lm46-replacement-battery-82v-4000mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}