{"product_id":"polycom-soundstation-2w-replacement-battery-74v-4400mah-li-ion","title":"Polycom SoundStation 2W Compatible Battery 7.4V 4400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePolycom SoundStation 2W — 7.4V Li-ion Replacement Battery (1520-07803-004)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V Li-ion battery replaces the original pack in the Polycom SoundStation 2W and SoundStation 2W EX wireless conference speakerphone. It delivers 4400mAh (32.56Wh) of capacity to the cordless unit. Cross-references OEM part numbers 1520-07803-004, L04L40627, 2200-07804-002, and CP-2WBATT24.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSoundStation 2W and 2W EX compatibility:\u003c\/strong\u003e\n    Both units share the same battery bay dimensions, 7.4V power rail, and BMS handshake protocol — this pack slots into either without modification to the charging cradle or firmware.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through the SoundStation 2W cradle and confirmed the BMS negotiates charge termination cleanly at full capacity without triggering a false-full cutoff that plagues degraded third-party cells.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eMonthly discharge cycle for the SoundStation 2W:\u003c\/strong\u003e\n    These units live on conference room tables and almost always get cradle-charged after short meetings. Let the pack run down below 20% at least once a month before recharging — constant top-off charging without a full discharge causes fuel gauge drift and accelerates capacity fade on the Li-ion cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the SoundStation 2W shows full charge but audio drops after an hour\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA heavily shallow-cycled pack loses its ability to hold voltage under the combined draw of the audio amplifier and the DECT radio. The battery gauge reports percentage based on a calibration that no longer matches actual cell capacity. The unit reads \"full\" because the BMS is working from corrupted state-of-charge data. Running the pack down to under 10% and doing a full charge cycle recalibrates the gauge — if the problem persists after two cycles, the cell has aged past recovery and replacement is the fix.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAudio distorting before the battery indicator reaches empty\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when a degraded cell can no longer sustain 7.4V under peak amplifier load — the voltage sags below the threshold the amp needs for clean output before the BMS trips the low-battery warning. The result is clipping and distortion at normal speaking volumes, even though the indicator still shows charge remaining. It is a voltage-delivery problem, not an audio hardware fault. A fresh cell holding steady above 7.0V under load eliminates the distortion immediately.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416237604954,"sku":"BWCS-PST440RC-1","price":41.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416237637722,"sku":"BWCS-PST440RC-2","price":48.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416237670490,"sku":"BWCS-PST440RC-3","price":53.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PST440RC-1.webp?v=1779761130","url":"https:\/\/batteryweb.com\/products\/polycom-soundstation-2w-replacement-battery-74v-4400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}