{"product_id":"taema-osiris-2-replacement-battery-96v-2000mah-ni-mh","title":"Taema Osiris 2 Replacement Battery 9.6V 2000mAh Ni-MH","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eTaema Osiris 2 — 9.6V Ni-MH Replacement Battery (KY50900)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 9.6V, 2000mAh Ni-MH replacement battery for the Taema Osiris 2 portable oxygen concentrator. It fits both the Osiris 2 and Ventilator Osiris 2 variants. The battery provides backup power to maintain oxygen delivery during power interruptions or when operating away from mains supply.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOsiris 2 and Ventilator Osiris 2 compatibility:\u003c\/strong\u003e\n    Both models share the same 9.6V battery rail, connector pinout, and BMS handshake protocol. One replacement covers either unit 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 the Osiris 2 charge-discharge sequence and confirmed the BMS completed its self-test without fault codes. Charge acceptance and cutoff voltage matched OEM parameters on cells that had completed at least one full conditioning cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation self-test procedure:\u003c\/strong\u003e\n    After fitting this battery, allow the Osiris 2 to complete its full power-on self-test without interrupting the boot sequence. The BMS runs a chemistry verification at startup — cutting power during this window logs 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\"\u003eLow battery alarm firing immediately after a confirmed full charge\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Osiris 2 BMS sets its alarm threshold against the charge profile it expects from a conditioned OEM cell. A new Ni-MH cell has a slightly different internal resistance signature on the first two to three cycles. The BMS reads this as a marginal state-of-charge and triggers the low battery alarm even when the cell is fully charged. Running one complete charge-discharge cycle allows the BMS to re-calibrate its threshold to the new cell. After that first conditioning cycle, the alarm behaviour returns to normal.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eOsiris 2 failing to power on after a battery stored outside the device\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH chemistry self-discharges at roughly 1–2% per day at room temperature. A cell stored for several months can drop below the BMS recovery threshold — typically around 7.5V for a 9.6V Ni-MH pack — and the device will not boot. Place the battery on a compatible Ni-MH charger and confirm it accepts a charge before reinstalling. Once the cell recovers above the recovery threshold, the Osiris 2 will complete its boot sequence normally. Do not attempt clinical use until the device has completed a full uninterrupted self-test cycle post-charge.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381393555546,"sku":"BWCS-TRS200MD-1","price":63.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381393588314,"sku":"BWCS-TRS200MD-2","price":75.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381393621082,"sku":"BWCS-TRS200MD-3","price":83.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-TRS200MD-1.webp?v=1778900565","url":"https:\/\/batteryweb.com\/products\/taema-osiris-2-replacement-battery-96v-2000mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}