{"product_id":"honor-play-20-replacement-battery-387v-4900mah-li-polymer","title":"Honor Play 20 HB496590EFW-F Replacement Battery 3.87V 4900mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHonor Play 20 \/ KOZ-AL00 — 3.87V Li-Polymer Replacement Battery (HB496590EFW-F)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.87V, 4900mAh (18.96Wh) lithium-polymer cell for the Honor Play 20 (KOZ-AL00). It replaces OEM part HB496590EFW-F and restores power to the phone's core functions — calls, display, and background services. Capacity figure comes directly from product data.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePlay 20 and KOZ-AL00 compatibility:\u003c\/strong\u003e\n    Both model designations reference the same hardware platform. They share the same battery bay dimensions (87.00 × 62.85 × 5.00mm), the same 3.87V charging rail, and the same BMS handshake over the flex connector. One cell fits both.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through full charge-discharge cycles on the Play 20 platform. The BMS accepted the cell without fault flags, the charge IC ramped current correctly, and the protection circuit tripped at expected low-voltage cutoff thresholds.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    After installation, disable fast charging and run one complete discharge-to-charge cycle at standard current. The fuel gauge IC on the Play 20 is calibrated to the old cell's discharge curve. One full cycle at low current lets the coulomb counter re-anchor to the new cell before fast-charge current is applied to an uncalibrated state.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Play 20's fuel gauge IC uses a stored discharge curve to estimate remaining capacity. When a new cell goes in, that curve no longer matches the new cell's actual voltage-vs-capacity profile. Under modem load or screen brightness spikes, the cell voltage drops below the BMS cutoff threshold before the gauge reaches 0% — and the phone shuts off. This is not a faulty cell; it is a calibration mismatch. Run one full discharge from 100% to automatic shutdown, then charge uninterrupted to 100%. After that cycle the coulomb counter recalibrates and the shutdowns stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB fast charge not activating after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eHonor's proprietary fast-charge protocol includes a BMS negotiation step that some replacement cells do not complete on the first charge cycle. The phone defaults to standard 5V\/1A USB charging as a fallback rather than throwing an error. Charge the phone once fully at standard rate — this completes the BMS initialisation sequence. On the second cycle, connect the original Honor charger and fast charging resumes at the expected rate.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391804506202,"sku":"BWCS-HUY200SL-1","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391804538970,"sku":"BWCS-HUY200SL-2","price":35.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391804571738,"sku":"BWCS-HUY200SL-3","price":38.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HUY200SL-1.webp?v=1779142264","url":"https:\/\/batteryweb.com\/products\/honor-play-20-replacement-battery-387v-4900mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}