{"product_id":"cavotec-m9-1051-3600-ex-replacement-battery-74v-3400mah-li-ion","title":"Cavotec M9-1051-3600 EX Replacement Battery 7.4V 3400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCavotec M9-1051-3600 EX \/ MC-3000 — 7.4V Li-ion Replacement Battery (M5-1051-3600)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V 3400mAh Li-ion battery replaces the original pack in the Cavotec M9-1051-3600 EX, MC-3, and MC-3000 wireless crane remote controls. These remotes are used to operate overhead cranes and hoisting equipment in warehouses, ports, and heavy manufacturing facilities. Same voltage, same OEM part reference — no modifications needed at the remote.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMC-3 and MC-3000 platform compatibility:\u003c\/strong\u003e\n    The MC-3 and MC-3000 share the same battery bay geometry and 7.4V two-cell architecture as the M9-1051-3600 EX. All three models use the same BMS handshake protocol, so this pack communicates charge state to the remote's firmware without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this battery under simulated solenoid activation cycles — the inrush current events that trip weaker packs. The BMS held voltage above the dropout threshold across repeated relay-switching loads without triggering a protection cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eMonthly charge cycle for idle remotes:\u003c\/strong\u003e\n    Crane remotes often sit unused for weeks between operational periods. Charge this battery once a month during idle periods — Li-ion cells discharged below 2.5V per cell trigger BMS lockout, and the pack may not respond to a charger even when reconnected.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSolenoid activation causing power dropout on a new battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eWhen a crane remote activates a solenoid or relay, the inrush current spike can momentarily pull cell voltage below the BMS protection threshold. If that threshold is crossed, the BMS trips and the remote cuts out — even with a freshly installed battery. This is not a faulty battery; it is a BMS response to current demand exceeding the rated discharge limit. Ensure the replacement pack matches or exceeds the original capacity rating, and confirm the battery is fully charged before use — a partially charged cell has higher internal resistance and sags harder under load.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eRemote showing low battery immediately after a new pack is installed\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eReplacement Li-ion packs ship at storage voltage — typically around 3.6V to 3.7V per cell, not full charge. The Cavotec remote reads cell voltage to calculate state of charge, so a pack at storage voltage registers as partially depleted the moment it is installed. This is expected behaviour, not a defective battery. Place the pack on charge before the first use and run it to full voltage — 4.2V per cell, or 8.4V total — before operating the crane.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360046383194,"sku":"BWCS-CMC300BX-1","price":64.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360046415962,"sku":"BWCS-CMC300BX-2","price":75.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360046448730,"sku":"BWCS-CMC300BX-3","price":83.99,"currency_code":"USD","in_stock":true}],"url":"https:\/\/batteryweb.com\/products\/cavotec-m9-1051-3600-ex-replacement-battery-74v-3400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}