{"product_id":"bang-olufsen-beoplay-eq-charging-case-replacement-battery-37v-450mah-li-polymer","title":"Bang \u0026 Olufsen Beoplay EQ Charging Case Compatible Battery 3.7V 450mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBang \u0026amp; Olufsen Beoplay EQ Charging Case — 3.7V Li-Polymer Replacement Battery (102026)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 450mAh Li-Polymer cell replaces the internal battery in the Bang \u0026amp; Olufsen Beoplay EQ Charging Case. It fits the case unit directly — not the earbuds themselves. Replace it when the case stops holding a charge and can no longer top up the earbuds between uses.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBeoplay EQ Charging Case fit:\u003c\/strong\u003e\n    The case uses a compact Li-Polymer cell at 3.7V nominal to power its internal charge circuit. This replacement matches the OEM voltage rail and physical footprint at 25.90 × 19.20 × 9.00mm — the BMS in the case reads cell voltage directly, so matching chemistry and voltage matters here.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the case's charge-in and charge-out sequence and confirmed the BMS accepted the new pack without error, completing full charge cycles to both the case and the earbuds.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle protocol for the Beoplay EQ case:\u003c\/strong\u003e\n    After fitting the new cell, place the case on its USB-C charge cable and let it reach full charge before putting earbuds inside. The case firmware logs the new cell's baseline voltage on that first cycle — skip it and the charge indicator can misread the state of charge for weeks.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Beoplay EQ case shows full but cuts the earbuds off early\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe case uses a fuel gauge that references a stored charge curve, not a live cell reading. When the original cell degrades, that curve drifts — the indicator shows full charge while the actual cell voltage has already dropped below the threshold needed to push current into the earbuds. Fitting a new cell resets nothing automatically. The case needs one complete charge-from-flat cycle over USB-C to re-anchor the fuel gauge to the new cell's real capacity. After that cycle, the indicator and actual charge state align again.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCase warm to the touch while charging the earbuds\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Beoplay EQ case charges both earbuds simultaneously while the case cell itself may also be taking charge from USB-C. That parallel draw in a small sealed housing generates noticeable warmth — it is normal up to mild warmth but should not feel hot. If the case gets genuinely hot, disconnect USB-C and let the case finish charging the earbuds on its own stored charge. Check that the USB-C port and cable are clean and delivering a stable 5V — a fluctuating input voltage forces the charge circuit to retry repeatedly, which increases heat output.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43428102963290,"sku":"BWCS-BOH102SL-1","price":33.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43428102996058,"sku":"BWCS-BOH102SL-2","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43428103028826,"sku":"BWCS-BOH102SL-3","price":43.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BOH102SL-1.webp?v=1779934116","url":"https:\/\/batteryweb.com\/products\/bang-olufsen-beoplay-eq-charging-case-replacement-battery-37v-450mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}