{"product_id":"att-spro2-replacement-battery-38v-6200mah-li-polymer","title":"AT\u0026T SPro2 Replacement Battery 3.8V 6200mAh Li-Polymer","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAT\u0026amp;T SPro2 — 3.8V Li-Polymer Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 6200mAh Li-Polymer battery for the AT\u0026amp;T SPro2 mobile projector. It fits both the SPro2 and S Pro 2 variants. Replace this battery when the original no longer holds enough charge to complete a full presentation away from mains power.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSPro2 and S Pro 2 compatibility:\u003c\/strong\u003e\n    Both model variants share the same battery bay dimensions, connector pinout, and BMS handshake protocol — this single cell covers both without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran the battery through full charge and discharge cycles on the SPro2. The BMS reported correct state-of-charge to the projector's onscreen indicator, and the protection circuit triggered cleanly at the low-voltage cutoff threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eLamp brightness and draw management:\u003c\/strong\u003e\n    Set the SPro2 to eco or low-brightness mode during battery-powered use. Full lamp brightness draws 30–40% more current than eco mode — that extra load pushes the battery toward its minimum voltage threshold faster without a visible quality gain in most presentation environments.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the SPro2 shuts off before the battery indicator reaches empty\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe SPro2's lamp requires a higher minimum operating voltage than the battery's hardware cutoff point. As the cell voltage drops under load, the projector's power management cuts the lamp before the fuel gauge reads zero. This is not a fault — it is the projector protecting the lamp driver circuit. A new cell with lower internal resistance holds voltage above that threshold longer, reducing mid-presentation shutoffs.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSPro2 not charging after the battery fully depleted\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the battery discharged below approximately 3.0V — either through extended storage or deep discharge — the BMS enters a sleep state and blocks the standard charge path. The projector's internal charger will show no charging activity. To recover, apply a low-current trickle charge (around 100mA) directly to the cell for 5–10 minutes to bring it above 3.0V, then reconnect and charge normally through the projector.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416088248410,"sku":"BWCS-ZMF970PT-1","price":35.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416088281178,"sku":"BWCS-ZMF970PT-2","price":41.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416088313946,"sku":"BWCS-ZMF970PT-3","price":45.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ZMF970PT-1.webp?v=1779760241","url":"https:\/\/batteryweb.com\/products\/att-spro2-replacement-battery-38v-6200mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}