{"product_id":"wolf-garten-40er-bai-replacement-battery-12v-3000mah-ni-mh","title":"Wolf Garten 40er Bai 12V 3000mAh Ni-MH Replacement Battery","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eWolf Garten 40er Bai Cordless Lawn Mower — 12V Ni-MH Replacement Battery\u003c\/h2\u003e\n  \u003cp class=\"bpw-desc-lead\"\u003eThis listing covers a 12V 3000mAh Ni-MH replacement battery for the Wolf Garten 40er Bai cordless lawn mower. It slots into Wolf Garten's 12V battery platform and restores cutting power to a mower that collects clippings as it runs. Voltage and capacity match the original 4057-075 specification exactly.\u003c\/p\u003e\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCompatibility — 40er Bai (4057-075):\u003c\/strong\u003e These models share the same 12V voltage rail, connector format, and BMS handshake, so one battery pack covers the full listed range without modification.\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 mowing load and tripped the low-voltage cutoff cleanly before cell damage could occur.\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge on Ni-MH:\u003c\/strong\u003e Run two or three full charge\/discharge cycles before regular use — Ni-MH cells need conditioning to reach their rated 3000mAh capacity.\u003c\/li\u003e\n  \u003c\/ul\u003e\n  \u003chr class=\"bpw-desc-divider\"\u003e\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy Ni-MH matters for a 12V lawn mower\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH chemistry handles the intermittent high-current draw that a mower motor produces better than older Ni-Cd packs. At 3000mAh and 36Wh, this pack sits at the top end of what Wolf Garten's 12V platform supports. Ni-MH also tolerates partial charges better than Ni-Cd, so the mower can be topped up between sessions without triggering memory effect at this capacity level.\u003c\/p\u003e\n  \u003ch3 class=\"bpw-desc-h3\"\u003eMower won't start after storage — here's what's happening\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA Ni-MH pack stored flat for several months can drop below the BMS's minimum detection threshold. The mower's controller sees the pack as absent or faulty and refuses to engage the blade motor. Connect the battery to its charger for a full cycle before testing — most chargers will wake a deeply discharged Ni-MH pack and restore communication with the mower. If the charger shows no response after 30 minutes, the cells have self-discharged past recovery and the pack needs replacement.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43175823278170,"sku":"BWCS-VPR400VX-1","price":82.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43175823310938,"sku":"BWCS-VPR400VX-2","price":97.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43175823343706,"sku":"BWCS-VPR400VX-3","price":107.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-VPR400VX-1.webp?v=1775236298","url":"https:\/\/batteryweb.com\/products\/wolf-garten-40er-bai-replacement-battery-12v-3000mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}