{"product_id":"dreame-h30-replacement-battery-216v-4000mah-li-ion","title":"Dreame H30 21.6V Replacement Battery W2420 4000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDreame H30 — 21.6V Li-ion Replacement Battery (W2420)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 21.6V 4000mAh (86.4Wh) lithium-ion battery for the Dreame H30 cordless stick vacuum. It replaces OEM part W2420 and fits the H30 platform directly. When the original cell degrades and suction drops mid-clean, this is the replacement unit.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eH30 platform fit:\u003c\/strong\u003e\n    The H30 uses a 21.6V nominal rail with a specific connector and BMS handshake. This cell matches that voltage rail and communicates with the H30's motor controller the same way the factory unit does — no modification needed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through sustained high-suction loads and monitored BMS behaviour under voltage sag. The protection circuit held stable cutoff thresholds and recovered cleanly after load was removed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eDock charging habit on the H30:\u003c\/strong\u003e\n    Do not leave the H30 sitting on its charging dock between uses. Cordless vacuums on continuous dock charge accumulate trickle-charge stress on the cells. Charge to full, then remove from the dock until the next clean.\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\"\u003eThe H30 motor draws significantly more current when airflow is restricted — a partially blocked filter is the most common trigger. Under that elevated draw, cell voltage sags early and the motor controller reads it as low battery before the indicator catches up. The result is weak suction with bars still showing on the display. Clean or replace the filter first; if suction restores, the battery was not the fault. If suction is still weak with a clean filter and a fresh charge, measure resting voltage — a healthy cell sits above 24V fully charged.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eMotor cutting out and recovering mid-clean\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a BMS overcurrent trip, not a dead battery. When the H30 runs sustained high-power mode against a blocked filter or dense carpet pile, current draw spikes past the protection circuit's threshold. The BMS cuts the motor to protect the cells, then resets once current demand drops. It can feel like an intermittent fault but the pattern is consistent — it happens under load, not at rest. Clear the filter, check the roller for tangled debris, and drop to standard suction mode on heavy carpet to stay below the trip threshold.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426378219610,"sku":"BWCS-DRH310VX-1","price":81.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426378252378,"sku":"BWCS-DRH310VX-2","price":95.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426378285146,"sku":"BWCS-DRH310VX-3","price":106.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DRH310VX_1.webp?v=1779931068","url":"https:\/\/batteryweb.com\/products\/dreame-h30-replacement-battery-216v-4000mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}