{"product_id":"terumo-te-331-replacement-battery-96v-2000mah-ni-mh","title":"Terumo TE-331 Infusion Pump Replacement Battery 9.6V 2000mAh BN-600AAK","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eTerumo TE-331 \/ TE-332 Syringe Pump — 9.6V Ni-MH Replacement Battery (BN-600AAK)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 9.6V, 2000mAh (19.2Wh) Ni-MH replacement battery for the Terumo TE-331, TE-332, TE-312, and TE-311 syringe pump series. These pumps are used in clinical settings for controlled intravenous fluid and medication delivery. The OEM part numbers this cell replaces are BN-600AAK, 8N-600AAK, and SS 005024.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTE-311 \/ TE-312 \/ TE-331 \/ TE-332 compatibility:\u003c\/strong\u003e\n    These four Terumo syringe pump models share the same 9.6V Ni-MH battery format, connector pinout, and BMS handshake protocol. A single cell type services the full group without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through full charge and discharge on the TE-331 platform. The BMS accepted the cell, completed voltage verification, and held steady under the pump's metered-dose load profile without triggering a fault or cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install self-test protocol:\u003c\/strong\u003e\n    After fitting this battery, let the pump complete its full power-on self-test without interruption. Terumo syringe pumps run a BMS verification pass at startup — cutting power mid-sequence stores a false battery fault that persists until the next clean reboot.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the TE-331 shows a battery fault after a confirmed full charge\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eTerumo syringe pumps store a minimum voltage threshold in their BMS, calibrated to aged OEM Ni-MH chemistry. A new replacement cell has a resting voltage profile that sits outside the expected curve during the first charge cycle, which triggers a fault flag rather than a clean pass. This is a BMS learn-cycle issue, not a cell defect. Running one complete charge-discharge cycle on the pump resets the threshold comparison and clears the fault. After that cycle, the status indicator reads correctly.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePump will not power on after the replacement cell sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells self-discharge during storage. If the replacement battery has been sitting unused, its resting voltage may have dropped below the TE-331's BMS recovery threshold — typically around 8.0V for a 9.6V pack. At that level, the pump's charge IC may not initiate a standard charge cycle at all. Connect the pump to mains and leave it on charge for a minimum of 30 minutes without pressing power — most Terumo charger circuits include a trickle pre-charge stage that recovers a deeply discharged Ni-MH cell back above the BMS wake threshold before switching to full charge.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381520007258,"sku":"BWCS-TER311MD-1","price":45.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381520040026,"sku":"BWCS-TER311MD-2","price":53.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381520072794,"sku":"BWCS-TER311MD-3","price":58.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-TER311MD-1.webp?v=1778901386","url":"https:\/\/batteryweb.com\/products\/terumo-te-331-replacement-battery-96v-2000mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}