{"product_id":"kobo-glo-hd-replacement-battery-37v-1500mah-li-polymer","title":"Kobo Glo HD Replacement Battery 3.7V 1500mAh Li-Polymer","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eKobo Glo HD \/ Aura \/ H2O — 3.7V Li-Polymer Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 1500mAh lithium-polymer cell replaces the original battery in the Kobo Glo HD, Aura, and H2O e-readers. All three models use the same physical cell format and connector — 84.15 × 49.50 × 2.70mm — so one part covers the full range. Swap it in when the original no longer holds a usable charge between reading sessions.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGlo HD, Aura, and H2O compatibility:\u003c\/strong\u003e\n    These three Kobo models share an identical battery footprint, connector pitch, and BMS voltage thresholds. The same cell works across all three without any modification to the flex cable or housing.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on the Glo HD platform and confirmed the BMS accepted the cell without a fault flag, backlight control remained stable across brightness levels, and charge termination triggered correctly at 4.2V.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap charge cycle on Kobo firmware:\u003c\/strong\u003e\n    After installing, connect via USB and let the device charge to 100% before use. Kobo firmware recalibrates the battery percentage display only after a complete charge cycle — skipping this step causes the indicator to read inaccurately for days.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eKobo Glo HD not powering on after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eReplacement cells ship at storage voltage — typically 3.6V to 3.85V — which can fall below the Kobo bootloader's minimum startup threshold. The device will appear completely dead even though the cell is functional. Connect the USB cable immediately after installation and leave it on charge for at least 10 minutes before pressing the power button. Once the cell clears approximately 3.7V under USB input, the bootloader initialises normally.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery percentage jumping or freezing after cell replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eKobo firmware stores discharge curve data calibrated to the original cell. A new cell has no matching history, so the percentage gauge reads from stale data until it recalibrates. You will see the indicator jump — sometimes dropping 20% suddenly or sticking at one number for extended use. Run two full charge-to-discharge cycles and the firmware rewrites the curve to match the new cell's actual behaviour.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43360251445338,"sku":"BWCS-BNR510SL-1","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43360251478106,"sku":"BWCS-BNR510SL-2","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43360251510874,"sku":"BWCS-BNR510SL-3","price":30.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BNR510SL-1.webp?v=1778610980","url":"https:\/\/batteryweb.com\/products\/kobo-glo-hd-replacement-battery-37v-1500mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}