{"product_id":"steelseries-arctis-9-replacement-battery-37v-1500mah-li-polymer","title":"SteelSeries Arctis 9 Compatible Battery 3.7V 1500mAh FT823456P","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSteelSeries Arctis 9 — 3.7V Li-Polymer Replacement Battery (FT823456P)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1500mAh Li-Polymer replacement battery for the SteelSeries Arctis 9 wireless headset. It fits the Arctis 9 directly and replaces OEM part FT823456P. Capacity figure is from the product specification — 1500mAh \/ 5.55Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eArctis 9 wireless platform:\u003c\/strong\u003e\n    The Arctis 9 runs a combined load — simultaneous 2.4GHz and Bluetooth radio stacks drawing from a single cell. This battery matches the voltage rail and connector footprint the BMS expects on both wireless channels.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on an Arctis 9 unit. The BMS handshake completed without error, charge termination triggered at the correct voltage, and both wireless channels stayed active under combined audio draw.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle base station protocol:\u003c\/strong\u003e\n    Seat the headset in the base station and complete a full uninterrupted charge before your first session. The Arctis 9 base uses this cycle to register the new cell — until it does, the on-screen talk-time estimate will read lower than actual capacity.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Arctis 9 cuts out mid-session under dual-radio load\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Arctis 9 is unusual in running two active radios — 2.4GHz and Bluetooth — off one Li-Polymer cell simultaneously. Peak current demand spikes when both radios transmit at the same time, particularly during audio bursts. If the cell's internal resistance is elevated — either from age or a shallow first cycle — voltage briefly dips below the BMS cutoff threshold and the headset drops out. A replacement cell with low internal resistance handles these spikes without triggering shutdown.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station showing charging error after fitting a new battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the base station displays a charging error or fails to show the charge indicator after a battery swap, the BMS handshake has not completed. This happens when the replacement cell ships at storage voltage — typically around 3.6V — and the base's charge controller does not recognise it as a valid pack in that state. Place the headset in the base, leave it connected, and do not remove it mid-cycle. Once the cell voltage climbs past the recognition threshold, the base registers the pack and the charge indicator activates normally.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43428104437850,"sku":"BWCS-HPX456SL-1","price":33.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43428104470618,"sku":"BWCS-HPX456SL-2","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43428104503386,"sku":"BWCS-HPX456SL-3","price":43.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HPX456SL-1.webp?v=1779934117","url":"https:\/\/batteryweb.com\/products\/steelseries-arctis-9-replacement-battery-37v-1500mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}