{"product_id":"tecno-hd61-album-replacement-battery-37v-1200mah-li-ion","title":"Tecno HD61 Album Compatible Battery 3.7V 1200mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eTecno HD61 Album — 3.7V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1200mAh Li-ion cell built to fit the Tecno HD61 Album smartphone. It replaces the original battery when the existing cell has degraded, swells, or can no longer hold a usable charge. Voltage and physical dimensions match the original: 53.00 × 33.90 × 5.70mm.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHD61 Album fit:\u003c\/strong\u003e\n    The HD61 Album uses a compact 3.7V single-cell configuration with a low-current BMS matched to its modest processor and display load. This cell meets that voltage rail and connector spec directly.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through full discharge and charge on the HD61 Album chassis. The BMS accepted the cell without error flags, and charge termination triggered correctly at 4.2V.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle fuel gauge recalibration:\u003c\/strong\u003e\n    On first use after installation, disable fast charging if available and run one complete discharge-to-charge cycle. This lets the fuel gauge IC map its coulomb counter against the new cell's actual discharge curve before the OS starts reporting percentages.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the HD61 Album shuts down suddenly at 20–30% after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe HD61 Album's fuel gauge IC stores a learned discharge curve from the previous cell. When a new cell goes in, the IC still references that old curve. At high-draw moments — screen on full brightness, mobile data active — the new cell's actual voltage drops below what the IC predicted, and the phone cuts power as a protection measure rather than reach cell minimum voltage. This is not a fault with the replacement cell. One full discharge-to-charge cycle without fast charging resets the coulomb counter and resolves the mismatch.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone won't power on after the replacement battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells self-discharge in storage. If this battery dropped below 2.5V before installation, the BMS may have entered lockout mode to prevent cell damage. Plug into a charger and leave it connected for 15–20 minutes without pressing the power button — the charge IC needs time to trickle enough current past the BMS threshold before the phone can boot. If the device still won't respond, check that the connector is fully seated and try a different USB cable rated for charging, not data-only.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405031211098,"sku":"BWCS-NK5CHL-1","price":40.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405031243866,"sku":"BWCS-NK5CHL-2","price":47.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405031276634,"sku":"BWCS-NK5CHL-3","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NK5CHL-1.webp?v=1779369842","url":"https:\/\/batteryweb.com\/products\/tecno-hd61-album-replacement-battery-37v-1200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}