{"product_id":"supro-ovs-em1-replacement-battery-252v-2500mah-li-ion","title":"25.2V SUPRO OVS-EM1 Replacement Battery DC-T02-25","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSUPRO OVS-EM1 — 25.2V Li-ion Replacement Battery (DC-T02-25)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 25.2V Li-ion battery pack rated at 2500mAh (63Wh), built to fit the SUPRO OVS-EM1 cordless stick vacuum cleaner. It slots in where the original DC-T02-25 pack sits and uses the same BMS handshake the charger expects. When the original cell degrades and suction weakens even on a full charge, this is the swap that brings the vacuum back to full draw.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOVS-EM1 fitment:\u003c\/strong\u003e\n    The OVS-EM1 runs a 25.2V motor rail that requires a matched cell pack and BMS profile. A mismatched pack — wrong voltage or incompatible BMS — will either refuse to charge or trigger an immediate cutoff when the motor spins up under load. This pack uses the DC-T02-25 form factor and BMS to prevent both.\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 motor-start cycles, confirming the BMS holds the 25.2V rail steady during initial spin-up and does not trip on the inrush current the OVS-EM1 motor draws at startup.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eDock charging habit on the OVS-EM1:\u003c\/strong\u003e\n    Do not leave the vacuum sitting on the charging dock between uses. Continuous dock charge delivers a low-level trickle that degrades Li-ion cells faster than normal cycle use. Charge to full, remove from the dock, and reconnect only when the battery is depleted.\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\"\u003eA partially blocked filter forces the OVS-EM1 motor to work harder to pull airflow. That extra load increases current draw beyond the motor's rated pull, which causes voltage on the 25.2V rail to sag under load even when the battery reads mid-charge. The BMS reads the voltage drop — not the state of charge — and throttles output to protect the cells. Clean or replace the filter first. If suction restores, the battery was not the problem.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eMotor cuts out mid-clean then recovers after a short pause\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a BMS overcurrent trip, not a dead battery. It happens when restricted airflow — a blocked filter or sealed nozzle — makes the motor draw sustained high current. The BMS cuts power to protect the cells, and the pack resets once current drops, which is why it starts again after a pause. Check the filter and clear any blockage at the nozzle before running again. If the cutout stops after clearing the filter, the pack is functioning correctly at the BMS level.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426468266074,"sku":"BWCS-SPE100VX-1","price":65.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426468298842,"sku":"BWCS-SPE100VX-2","price":76.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426468331610,"sku":"BWCS-SPE100VX-3","price":84.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SPE100VX-1.webp?v=1779933389","url":"https:\/\/batteryweb.com\/products\/supro-ovs-em1-replacement-battery-252v-2500mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}