{"product_id":"robojet-duel-replacement-battery-144v-3500mah-ni-mh","title":"RoboJet Duel 14.4V Ni-MH Replacement Battery 3500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRoboJet Duel \/ Sensual — 14.4V Ni-MH Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 14.4V, 3500mAh Ni-MH replacement battery for the RoboJet Duel and Sensual cordless vacuum cleaners. It slots in where the original pack sat and restores full motor voltage to both models. Capacity is rated at 50.4Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDuel and Sensual compatibility:\u003c\/strong\u003e\n    Both models run the same 14.4V motor rail and use the same physical battery housing and connector. A single cell format covers both — no adapter or wiring change needed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through full discharge and recharge sequences on a 14.4V Ni-MH load tester. The BMS held cutoff at the correct low-voltage threshold and accepted charge without thermal runaway or mid-cycle interruption.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eDock charging on the Duel and Sensual:\u003c\/strong\u003e\n    Do not leave either vacuum sitting on the charging dock indefinitely. Ni-MH cells degrade faster under continuous trickle charge than Li-ion. Charge to full, then remove from the dock until the next use.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSuction dropping before the battery indicator reaches low\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH voltage sags under load before the cell is actually depleted. On the Duel, the motor draws harder when the filter is partially blocked, pulling more current and accelerating that voltage sag. The vacuum interprets the voltage drop as low charge and reduces motor speed early. Clean the filter first — if suction recovers immediately, the cell is fine and the filter was the cause.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eMotor cutting out mid-clean and restarting after a pause\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a BMS overcurrent trip, not a dead battery. When the filter is restricted, suction resistance increases and the motor draws above its rated current to compensate. The BMS cuts power to protect the pack, then resets once current drops during the pause. Clear the filter and check the dust bin — if the trip stops occurring, the cell and BMS are working correctly. If it persists on a clean filter, measure pack voltage at rest; a healthy Ni-MH pack at full charge sits between 16.8V and 17.4V across all cells.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43428042735706,"sku":"BWCS-KSB002VX-1","price":86.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43428042768474,"sku":"BWCS-KSB002VX-2","price":101.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43428042801242,"sku":"BWCS-KSB002VX-3","price":112.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-KSB002VX-1.webp?v=1779933966","url":"https:\/\/batteryweb.com\/products\/robojet-duel-replacement-battery-144v-3500mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}