{"product_id":"anker-powerconf-usb-c-conference-speaker-replacement-battery-37v-6700mah-li-ion","title":"Anker PowerConf 539028 Replacement Battery 3.7V 6700mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAnker PowerConf USB-C Conference Speaker — 3.7V Li-ion Replacement Battery (539028)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 6700mAh Li-ion replacement battery for the Anker PowerConf USB-C Conference Speaker. It fits models A3301011 and A3305. OEM part number 539028 matches the original cell specification at 24.79Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eA3301011 and A3305 compatibility:\u003c\/strong\u003e\n    Both models share the same 3.7V battery rail, connector pinout, and BMS communication protocol. A single cell revision covers the full PowerConf USB-C lineup without modification.\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 PowerConf unit. The BMS handshake completed correctly, charging terminated at full voltage, and the unit's LED indicators reported charge state accurately after one full cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-session calibration tip:\u003c\/strong\u003e\n    After installing, run a complete charge cycle before using the unit in a meeting. The PowerConf maps battery state during normal operation — the charge indicator may show inaccurate warnings for the first session until the firmware establishes its voltage thresholds against the new cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery indicator showing wrong level after installation\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe PowerConf's fuel gauge estimates charge state by tracking voltage curves it learned from the previous cell. A new cell with a full 6700mAh capacity sits on a slightly different voltage curve than a degraded original. The firmware needs one full charge-to-discharge cycle to recalibrate its thresholds. Charge the unit to 100%, use it until it prompts a recharge, then charge again — the indicator will read accurately from that point forward.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUnit cutting out or losing audio mid-conference call\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe PowerConf draws simultaneously from the battery for the speaker amplifier, microphone array, and USB-C audio processing. Under sustained combined load — especially at higher speaker volumes during long sessions — voltage can sag briefly below the BMS protection threshold, triggering a cutoff. This typically points to a cell that has lost usable capacity rather than a firmware fault. Replacing the cell with a fresh 6700mAh unit restores the voltage headroom needed to sustain peak draw without tripping the protection circuit.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339856445530,"sku":"BWCS-AKC330XL-1","price":50.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339856478298,"sku":"BWCS-AKC330XL-2","price":59.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339856511066,"sku":"BWCS-AKC330XL-3","price":66.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AKC330XL-1.webp?v=1778366843","url":"https:\/\/batteryweb.com\/products\/anker-powerconf-usb-c-conference-speaker-replacement-battery-37v-6700mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}