{"product_id":"rovus-bl500n-replacement-battery-148v-3400mah-li-ion","title":"ROVUS BL500N Cordless Vacuum Compatible Battery 14.8V 3400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eROVUS BL500N \/ BL500 \/ BL517 — 14.8V Li-ion 3400mAh Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 14.8V, 3400mAh Li-ion replacement battery for the ROVUS BL500N, BL500, and BL517 cordless stick vacuums. It slots into the same battery compartment as the original and connects to the same motor control board. Capacity is 3400mAh (50.32Wh) — matched to the original specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBL500N, BL500, BL517 compatibility:\u003c\/strong\u003e\n    These three models share the same 14.8V battery rail, connector pinout, and BMS communication protocol. One battery fits all three without any adapter or modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this battery through charge and discharge cycles on the BL500N. The BMS held cutoff voltage correctly and the motor control board accepted the handshake without fault codes.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eDock charging on cordless vacuums:\u003c\/strong\u003e\n    Do not leave the vacuum sitting on the charging dock indefinitely. Continuous trickle charge from the dock accelerates capacity fade on Li-ion cells. Charge to full, then remove from the dock.\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 BL500N motor draws more current when airflow is restricted — a partially blocked filter forces the motor to work harder to maintain suction. As current draw rises, the battery voltage sags under load even though the cells still hold charge. The indicator reads the resting voltage, not the loaded voltage, so it shows mid-range while suction has already fallen. Clean the filter first. If suction restores, the battery is fine.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eMotor cuts out mid-clean and then recovers after a few seconds\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a BMS overcurrent trip, not a dead battery. When the motor pulls current above the BMS threshold — typically caused by sustained restricted airflow from a blocked filter or brush roll jam — the BMS opens the discharge circuit to protect the cells. The few-second pause is the BMS resetting. Clear any blockage at the brush roll and filter, then check that resting voltage is at or above 15.8V after a full charge.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426459779162,"sku":"BWCS-PCS781VX-1","price":53.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426459811930,"sku":"BWCS-PCS781VX-2","price":63.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426459844698,"sku":"BWCS-PCS781VX-3","price":70.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PCS781VX-1.webp?v=1779933315","url":"https:\/\/batteryweb.com\/products\/rovus-bl500n-replacement-battery-148v-3400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}