{"product_id":"sonumaxx-24-range-replacement-battery-37v-350mah-li-polymer","title":"Sonumaxx 2.4 Range Replacement Battery 3.7V 350mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSonumaxx 2.4 Range \/ 2.4 PR Receiver — 3.7V Li-Polymer Replacement Battery (230-469)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 350mAh lithium-polymer cell replaces the original battery in the Sonumaxx 2.4 Range and 2.4 PR Receiver wireless headsets. It matches the OEM part number 230-469 and restores wireless audio and DECT transmission functions. Dimensions are 35.00 × 30.44 × 15.18mm — confirm against your existing cell before fitting.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e2.4 Range and 2.4 PR Receiver compatibility:\u003c\/strong\u003e\n    Both models run the same 3.7V cell with an identical connector and BMS handshake profile. One cell covers the full platform — no hardware differences affect fitment between these two variants.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge cycling on a 2.4 Range headset base station. The BMS completed handshake correctly, accepted charge without error flags, and held voltage within expected tolerance under combined audio and DECT radio draw.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge in the base station:\u003c\/strong\u003e\n    Seat the headset in its base and let it complete one full charge cycle before use. DECT headsets log the new cell during this cycle — skipping it means the talk-time indicator will read inaccurately until the base recalibrates.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eVoltage sag under combined audio and DECT radio draw\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe 2.4 Range headset runs audio processing and a 2.4GHz radio transmitter simultaneously from a single 350mAh cell. That combined draw creates brief current spikes — most pronounced during voice activity peaks. A worn cell with elevated internal resistance drops voltage sharply during those spikes, which the BMS reads as a low-battery event even if the indicator shows charge remaining. A fresh cell at proper capacity handles the spike without tripping the cutoff.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station showing full charge but headset cuts off after a short call\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when a new cell arrives at storage voltage — typically 3.6–3.7V — and the base stops charging before delivering a true full cycle. The indicator reads 100% but usable capacity is much lower. Place the headset back in the base for a complete uninterrupted charge, then remove and re-seat it once. The base should then log the correct cell state and charge to a genuine full voltage of around 4.2V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43428125376602,"sku":"BWCS-SMX240SL-1","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43428125409370,"sku":"BWCS-SMX240SL-2","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43428125442138,"sku":"BWCS-SMX240SL-3","price":37.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SMX240SL-1.webp?v=1779934245","url":"https:\/\/batteryweb.com\/products\/sonumaxx-24-range-replacement-battery-37v-350mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}