{"product_id":"barnes-noble-glowlight-3-replacement-battery-37v-1500mah-li-polymer","title":"Barnes \u0026 Noble GlowLight 3 Replacement Battery 3.7V 1500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBarnes \u0026amp; Noble GlowLight 3 — 3.7V Li-Polymer Replacement Battery (PR-305084-ST)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V 1500mAh lithium-polymer cell replaces the original PR-305084-ST battery in the Barnes \u0026amp; Noble GlowLight 3, GlowLight 6-inch, and BNRV520 e-readers. It fits the slim 84.15 x 49.50 x 2.70mm cavity directly and connects to the existing board connector. Capacity matches OEM spec at 5.55Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGlowLight 3, GlowLight 6-inch, and BNRV520 fitment:\u003c\/strong\u003e\n    These three models share the same battery bay dimensions, connector pinout, and power management circuit. The BMS on each draws from the same voltage rail, so one cell works across all three without any hardware modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on the GlowLight platform and confirmed the BMS accepted the cell without fault flags. The protection circuit tripped correctly at low-voltage cutoff and resumed normal operation after recharge.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap charge cycle on GlowLight firmware:\u003c\/strong\u003e\n    After installing this cell, charge through USB before powering on. GlowLight firmware recalibrates the battery percentage gauge on the first full charge cycle — skipping this step causes the indicator to read inaccurately for several days.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the GlowLight 3 shows an inaccurate battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe GlowLight firmware tracks charge state using a coulomb counter calibrated to the original cell's charge curve. When a new cell goes in, that counter starts from stale reference data. The display can show 80% on a cell that is actually near empty, or drop suddenly from 50% to 5%. Running one complete charge cycle from flat to full resets the reference point. After that cycle, percentage readings stabilise.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePage turn response sluggish immediately after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eE-ink displays require a voltage spike to refresh each page. If the new cell shipped at storage voltage — typically around 3.6V — the board may throttle the refresh driver to protect the cell. This makes page turns feel slow or slightly delayed. It is not a hardware fault. Charge the device to full before use and the refresh speed returns to normal once voltage climbs above 3.8V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360244465754,"sku":"BWCS-BNR520SL-1","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360244498522,"sku":"BWCS-BNR520SL-2","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360244531290,"sku":"BWCS-BNR520SL-3","price":30.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BNR520SL-1.webp?v=1778610981","url":"https:\/\/batteryweb.com\/products\/barnes-noble-glowlight-3-replacement-battery-37v-1500mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}