{"product_id":"xiaomi-roborock-1c-replacement-battery-144v-2500mah-li-ion","title":"Xiaomi Roborock 1C Replacement Battery 14.4V 2500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eXiaomi Roborock 1C — 14.4V Li-ion Replacement Battery (P1904-4S1P-MM)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 14.4V 2500mAh Li-ion battery for the Xiaomi Roborock 1C robotic vacuum cleaner. It fits the STYTJ01ZHM, SKV4093GL, and XM2000021 chassis. The OEM part number is P1904-4S1P-MM — verify this against the label on your original cell before ordering.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRoborock 1C platform fit:\u003c\/strong\u003e\n    The 1C, SKV4093GL, STYTJ01ZHM, and XM2000021 all run the same 14.4V four-cell pack with an identical connector and BMS handshake. Swapping between these variants requires no modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through full charge and discharge cycles on the 1C platform. The BMS communicated correctly with the dock charger, accepted charge without fault codes, and the motor controller recognised state-of-charge data normally.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eDock charging discipline on robotic vacuums:\u003c\/strong\u003e\n    Do not leave the Roborock 1C on the charging dock permanently. Continuous trickle charging accelerates capacity fade on Li-ion packs faster than normal cycling does. Charge to full, then remove from the dock until the next cleaning run.\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  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the motor draws more current than the pack can sustain at its present state of health. A partially blocked filter forces the motor to work harder, pulling sustained high current that causes voltage to sag below the controller's threshold. The 1C interprets this as a low-cell-voltage event and reduces motor speed before the indicator shows empty. Clean the filter first — if suction still drops early with a fresh filter, the pack has degraded and needs replacing.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eMotor cuts out mid-run then recovers after a short pause\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a BMS overcurrent trip, not a charge level issue. When suction is restricted — blocked brush roll, clogged filter, or hair wrapped around the intake — the motor draws a sustained current spike that triggers the BMS protection circuit. The pack shuts output, cools briefly, then resets. Clear the blockage and check that the filter is seated correctly. If trips continue on an unblocked machine, measure pack voltage at rest: a healthy cell should read at least 16.0V fully charged.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43427982377050,"sku":"BWCS-XMC180VX-1","price":61.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43427982409818,"sku":"BWCS-XMC180VX-2","price":71.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43427982442586,"sku":"BWCS-XMC180VX-3","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-XMC180VX-1.webp?v=1779933697","url":"https:\/\/batteryweb.com\/products\/xiaomi-roborock-1c-replacement-battery-144v-2500mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}