{"product_id":"akerstroms-200j-transmitters-replacement-battery-24v-3500mah-ni-mh","title":"Akerstroms 940684-000E Replacement Battery 2.4V 3500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAkerstroms 200J \/ MC98 Transmitters — 2.4V Ni-MH Replacement Battery (940684-000E)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 2.4V, 3500mAh Ni-MH replacement battery for Akerstroms 200J and MC98 industrial crane remote control transmitters. It replaces OEM part numbers 940684-000E, 940684-000, and 170.2151. The battery fits directly into the transmitter housing and restores full operating capacity to the remote control system.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e200J and MC98 transmitter compatibility:\u003c\/strong\u003e\n    Both the 200J and MC98 series share the same 2.4V two-cell Ni-MH pack format, connector pinout, and charge termination logic. The BMS on each transmitter uses delta-V cutoff to detect full charge — the cell chemistry here matches that threshold behaviour exactly.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through charge cycles on a 200J transmitter and confirmed the BMS accepted charge without error flags, held voltage under solenoid activation load, and showed no unexpected thermal cutoff events.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eInfrequent-use charging protocol:\u003c\/strong\u003e\n    If the transmitter sits unused for more than four weeks, connect it to the charger for a full cycle before returning it to service. Ni-MH cells in crane remotes left at partial state of charge self-discharge steadily — cells that drop below the BMS recovery threshold may read as faulty even after reconnecting to a charger.\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 freshly installed battery\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eWhen a crane remote triggers a solenoid or relay, the inrush current spike can briefly exceed what a partially charged Ni-MH pack can deliver without a voltage sag. If the transmitter browns out or resets the moment you activate a control function, the cell voltage is likely too low to handle the load. A fully charged 2.4V Ni-MH pack should hold above 2.2V under that inrush pulse. Charge the battery completely before testing — a resting voltage of 2.4–2.5V at the terminals confirms the pack is ready for load.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eRemote showing low-battery warning immediately after new cell install\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eReplacement Ni-MH cells ship at storage voltage, typically 1.0–1.1V per cell, which puts the pack well below the transmitter's normal operating threshold. The low-battery indicator triggers because the transmitter reads that storage voltage as a depleted cell, not a fault. This is not a defective battery. Place the transmitter on charge for a full cycle — once the pack reaches 2.4V, the low-battery warning clears and the remote operates normally.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360043597914,"sku":"BWCS-AKT980BX-1","price":53.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360043630682,"sku":"BWCS-AKT980BX-2","price":63.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360043663450,"sku":"BWCS-AKT980BX-3","price":70.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AKT980BX-1.webp?v=1778610709","url":"https:\/\/batteryweb.com\/products\/akerstroms-200j-transmitters-replacement-battery-24v-3500mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}