{"product_id":"listen-technologies-m1-replacement-battery-37v-1050mah-li-ion","title":"Listen Technologies LA-365 M1 Replacement Battery 3.7V 1050mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eListen Technologies M1 \/ iDSP Receivers — 3.7V Li-ion Replacement Battery (LA-365)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1050mAh Li-ion cell built to the LA-365 spec. It fits the Listen Technologies M1 wireless headset, iDSP receivers, Point M1 Microphone, and Media Interface units. The battery slots into the same compartment as the original and connects through the same BMS interface.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eM1 and iDSP receiver compatibility:\u003c\/strong\u003e\n    These devices share the same 3.7V rail, physical footprint, and connector pinout. The LA-365 cell works across the family because the BMS communication protocol is identical — no firmware differences between models affect charging handshake.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge cycles on M1 hardware and monitored the BMS handshake at the base station. The protection circuit tripped correctly at low-voltage cutoff and accepted a full charge cycle without error flags.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle base station logging:\u003c\/strong\u003e\n    Seat the headset in the base station and let it complete a full uninterrupted charge before use. The base needs that first cycle to log the new cell — until it does, the talk-time estimate displayed may read inaccurately low.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the M1 cuts out mid-transmission on a freshly charged battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe M1 draws from two simultaneous loads — audio decoding and the DECT radio transmitter. Under that combined draw, a cell sitting at storage voltage can sag below the BMS cutoff threshold even though it showed a full charge indicator. This happens most often on the first one or two cycles after fitting a replacement cell. Three to five full charge-discharge cycles allow the cell chemistry to stabilise and voltage sag to reduce. If cutouts persist past cycle five, check that the base station contact pins are clean and making full contact.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station shows a charging error after fitting the LA-365\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA charging error on the base display usually means the BMS handshake did not complete — the base polled the cell before the protection circuit had initialised. Remove the headset from the base, wait 10 seconds, then reseat it firmly. If the error persists, inspect the three contact points inside the headset battery bay for oxidation or debris. Clean contacts with a dry cotton swab and reseat again — the handshake should complete within 30 seconds of correct seating.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43428158832730,"sku":"BWCS-PWH303SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43428158865498,"sku":"BWCS-PWH303SL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43428158898266,"sku":"BWCS-PWH303SL-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PWH303SL-1.webp?v=1779934278","url":"https:\/\/batteryweb.com\/products\/listen-technologies-m1-replacement-battery-37v-1050mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}