{"product_id":"philips-sd80-replacement-battery-144v-5200mah-li-ion","title":"Philips SD80 Replacement Battery 14.4V 5200mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePhilips SD80 Outdoor Speaker — 14.4V Li-ion Replacement Battery (INR18650-4S2P)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 14.4V 5200mAh Li-ion battery replaces the original pack in the Philips SD80 and SD80\/93 Outdoor Speaker. It uses the same INR18650-4S2P cell configuration as the factory battery. When the original pack degrades, the speaker loses portability — this battery restores it.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSD80 and SD80\/93 compatibility:\u003c\/strong\u003e\n    Both the standard SD80 and the SD80\/93 Outdoor variant share the same 14.4V battery bay, connector pinout, and BMS handshake protocol. One battery fits both. No adapter required.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through charge and discharge cycles on the SD80. The BMS balanced cells correctly across both charge and audio-draw phases, and the protection circuit tripped as expected at low-cell voltage cutoff with no false shutdowns at high amplifier draw.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eMonthly discharge cycle for the SD80:\u003c\/strong\u003e\n    Let the speaker run down below 20% at least once a month before recharging. The SD80 is commonly left on its dock between uses, which causes shallow-cycle degradation and fuel gauge drift over time — a full discharge resets the gauge and slows capacity fade.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAudio distortion before the battery indicator reaches empty on the SD80\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eAs the cell voltage drops toward the lower end of its discharge curve, the amplifier stage in the SD80 starts clipping before the battery indicator triggers a low-battery warning. The indicator reads off a voltage threshold, but the amplifier reacts to instantaneous current sag under loud audio. A worn or deeply cycled pack has higher internal resistance, which worsens voltage sag under load. Replacing the pack eliminates the resistance gap — the amplifier receives stable voltage through more of the discharge cycle.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSD80 warm to the touch during extended outdoor play\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eHeat buildup in the SD80 during long sessions comes from two sources running simultaneously: amplifier dissipation and battery discharge heat. In the fabric-wrapped outdoor housing, that heat has limited airflow to escape. A degraded original pack runs at higher internal resistance, generating more heat per discharge cycle. If the housing feels uncomfortably warm, check the battery first — a fresh pack with lower internal resistance reduces one of the two heat sources directly.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416178589786,"sku":"BWCS-PSD800SL-1","price":68.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416178622554,"sku":"BWCS-PSD800SL-2","price":80.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416178655322,"sku":"BWCS-PSD800SL-3","price":88.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PSD800SL-1.webp?v=1779760648","url":"https:\/\/batteryweb.com\/products\/philips-sd80-replacement-battery-144v-5200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}