{"product_id":"bang-olufsen-beoplay-p6-replacement-battery-74v-2600mah-li-ion","title":"Bang \u0026 Olufsen BeoPlay P6 Replacement Battery 7.4V 2600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBang \u0026amp; Olufsen BeoPlay P6 — 7.4V Li-ion Replacement Battery (C129D1)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.4V, 2600mAh Li-ion battery for the Bang \u0026amp; Olufsen BeoPlay P6 portable Bluetooth speaker. It replaces OEM part C129D1 (also cross-referenced as 2INR19\/66). Fit models include BeoPlay P6, 11400, and 1140026.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBeoPlay P6 compatibility:\u003c\/strong\u003e\n    The P6, 11400, and 1140026 all run on the same 7.4V cell platform with identical connector orientation and BMS communication. Swapping to this battery requires no wiring changes — the fuel gauge handshake initialises on first charge.\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 a P6 unit. The BMS accepted the pack without fault flags, cell balancing kicked in correctly at top-of-charge, and the protection circuit tripped cleanly at the low-voltage cutoff threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eMonthly discharge cycle for the P6:\u003c\/strong\u003e\n    The P6 typically sits on a desk or shelf and gets topped off constantly. Let the speaker drain below 20% at least once a month before recharging — this prevents fuel gauge drift and slows capacity fade on the Li-ion cell caused by continuous shallow cycling.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAudio distorting before the battery indicator reaches empty on the P6\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eWhen a Li-ion cell ages, internal resistance rises. Under the combined current draw of the amplifier and Bluetooth radio at moderate-to-high volume, terminal voltage sags below what the amplifier rail needs — even if the reported charge level still shows 20–30%. The amplifier clips because it can't pull enough clean voltage, and you hear distortion before the speaker shuts off. A fresh cell with lower internal resistance holds terminal voltage stable under the same load. After fitting this battery, run it through one full discharge before judging audio quality at volume.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eP6 won't wake from USB-C after sitting unused for several weeks\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA deeply discharged Li-ion cell can drop below the minimum acceptance voltage for USB-C Power Delivery negotiation — the charger and speaker fail to handshake, so charging never starts and the speaker appears dead. This is not a fault with the port or the charger. Connect the P6 to a standard 5V USB-A source first, which bypasses PD negotiation and trickle-charges the cell back above ~2.5V per cell. Once the pack recovers to that threshold, switch to the USB-C charger and complete a full charge cycle.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416218304602,"sku":"BWCS-BNP600SL-1","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416218337370,"sku":"BWCS-BNP600SL-2","price":35.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416218370138,"sku":"BWCS-BNP600SL-3","price":38.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BNP600SL-1.webp?v=1779760990","url":"https:\/\/batteryweb.com\/products\/bang-olufsen-beoplay-p6-replacement-battery-74v-2600mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}