{"product_id":"sennheiser-hmec-replacement-battery-12v-2500mah-ni-mh","title":"Sennheiser HMEC Wireless Headset Replacement Battery 12V 2500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSennheiser HMEC \/ HMDC 200 Series — 12V Ni-MH Replacement Battery (BA202-12)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V, 2500mAh Ni-MH replacement battery for the Sennheiser HMEC, HMDC 200, KDHC22, and BA202-SYS wireless headset systems. It slots into the same bay as the original BA202-12 pack and handles both the audio circuit and DECT radio draw. Use this when the original cell no longer holds a charge through a full shift.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHMEC and HMDC 200 compatibility:\u003c\/strong\u003e\n    These models share the same 12V battery bay, connector pinout, and BMS handshake protocol — which is why a single pack covers the full range. The base station communicates with the pack's protection circuit to track charge state and log the cell.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through charge cycles on a HMDC 200 base station. The BMS completed the handshake on the first dock, the charge indicator cycled correctly, and the protection circuit held voltage within spec under combined DECT and audio load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst dock procedure on HMDC and HMEC bases:\u003c\/strong\u003e\n    Place the headset in the base station and leave it for a full uninterrupted charge cycle before taking a call. The base needs to complete a full log of the new cell before its talk-time estimate becomes accurate — pulling the headset early on the first charge skews the counter.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the HMEC base station shows a charging error after fitting a new pack\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe HMDC and HMEC base stations use a BMS handshake to verify the pack before beginning a charge cycle. If the headset is docked before the contacts are fully seated, or if the dock connector is dirty, the handshake times out and the base throws a charge error. Clean the gold contacts on both the pack and the dock cradle with a dry cloth, then re-seat the headset firmly. The error clears once the base completes a full recognition cycle at the correct 12V charge voltage.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase reads full charge but headset cuts off after a few minutes of use\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA new Ni-MH cell ships at storage voltage — typically well below its rated 12V operating level. The base station charge indicator can show full before the cell has actually reached capacity, because the voltage climbs quickly from storage level and triggers the charge-complete threshold early. The fix is a second full charge cycle immediately after the first. By the third cycle, the cell reaches its rated 2500mAh capacity and the cutoff issue stops.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43428140777562,"sku":"BWCS-SBA202SL-1","price":76.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43428140810330,"sku":"BWCS-SBA202SL-2","price":89.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43428140843098,"sku":"BWCS-SBA202SL-3","price":98.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SBA202SL-1.webp?v=1779934244","url":"https:\/\/batteryweb.com\/products\/sennheiser-hmec-replacement-battery-12v-2500mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}