{"product_id":"xrobot-m-788-replacement-battery-144v-2000mah-ni-mh","title":"XRobot M-788 Replacement Battery 14.4V 2000mAh Ni-MH","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eXRobot M-788 — 14.4V Ni-MH Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 14.4V 2000mAh Ni-MH replacement battery for the XRobot M-788 robotic vacuum cleaner. It slots into the M-788 to restore cordless autonomous floor cleaning after the original cell loses capacity or fails. Voltage and capacity match the original specification exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eM-788 platform fitment:\u003c\/strong\u003e\n    The M-788 runs a 14.4V motor rail with a Ni-MH pack sized to the 179 × 51 × 52 mm bay. This cell matches those dimensions and the voltage the drive motors and navigation board expect. A mismatch in either drops the BMS handshake and the unit will not initialise.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through full discharge and recharge sequences on M-788 hardware. The BMS accepted the pack without fault codes, the suction motor ramped to full speed, and charge termination triggered cleanly at capacity.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eDock charging habit for Ni-MH cells:\u003c\/strong\u003e\n    Remove the vacuum from the charging dock once the charge cycle completes. Ni-MH chemistry is more sensitive to trickle overcharge than Li-ion. Leaving the M-788 docked permanently accelerates cell degradation faster than regular charge-and-remove cycles.\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 on the M-788\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the motor draws more current than the cell can sustain at its present state of charge. A partially blocked filter forces the motor to work harder, pulling current above the BMS threshold and triggering a voltage sag before the indicator registers a low state. The vacuum reads cell voltage, not remaining energy, so the indicator lags behind real-world performance. Clear the filter first — if suction still drops early with a clean filter, the cell has aged below usable capacity and needs replacement.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eM-788 motor cuts out mid-cycle then recovers after a few seconds\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a BMS overcurrent trip, not a motor fault. Sustained restricted airflow — usually a clogged filter or brush roll tangle — pushes motor current above the pack's protection threshold. The BMS disconnects the load, the motor stops, and reconnects once current demand resets. Fix the restriction first: remove the filter, clean it, and check the brush roll for hair wrap. If the cutout continues on a clear filter, measure pack voltage under load — a healthy 14.4V Ni-MH cell should hold above 12.5V during normal suction operation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43428088021082,"sku":"BWCS-IRB400VX-1","price":82.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43428088053850,"sku":"BWCS-IRB400VX-2","price":96.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43428088086618,"sku":"BWCS-IRB400VX-3","price":107.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-IRB400VX-1.webp?v=1779934037","url":"https:\/\/batteryweb.com\/products\/xrobot-m-788-replacement-battery-144v-2000mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}