{"product_id":"samsung-galaxy-a20s-replacement-battery-385v-3900mah-li-polymer","title":"SCUD-WT-N6 Samsung Galaxy A20s Replacement Battery 3.85V 3900mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSamsung Galaxy A20s — 3.85V Li-Polymer Replacement Battery (SCUD-WT-N6)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 3900mAh Li-Polymer battery for the Samsung Galaxy A20s (SM-A2070), including the 2019 single and dual SIM variants. It replaces the internal cell when the original degrades, loses capacity, or fails to hold a charge. Part number SCUD-WT-N6 matches the OEM specification for this model line.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGalaxy A20s and SM-A2070 compatibility:\u003c\/strong\u003e\n    The A20s series shares a common battery bay geometry, connector pinout, and BMS communication protocol across the SM-A2070 variants. This cell fits those models without modification to the flex connector or adhesive mounting points.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on an SM-A2070 unit. The BMS handshake completed correctly, charge IC accepted the cell without fault codes, and voltage held steady under combined screen and modem load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle fast charge lockout:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one full discharge-charge cycle at standard rate. This lets the fuel gauge IC recalibrate its coulomb counter against the new cell's actual discharge curve before high-current charging pushes current into an uncalibrated cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Galaxy A20s reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe A20s uses a fuel gauge IC that builds its discharge model from the previous cell's charge curve. When you install a new cell, the IC still references the old calibration data. This causes the percentage readout to jump, stall, or report full charge when the cell is not actually full. One complete slow discharge-charge cycle overwrites the stored curve and syncs the counter to the new cell's real capacity.\u003c\/p\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\"\u003eThis happens when the cell voltage drops below the modem or display load threshold faster than the fuel gauge IC expects — a voltage cliff caused by a mismatch between the stored discharge curve and the new cell's actual internal resistance profile. The phone interprets the voltage sag as a critical battery event and cuts power before the percentage reaches zero. Run one full uninterrupted discharge to empty, then charge to 100% without interruption. After that cycle, the IC recalibrates its cutoff reference and shutdowns at low percentage stop.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391998099546,"sku":"BWCS-SMA207SL-1","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391998132314,"sku":"BWCS-SMA207SL-2","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391998165082,"sku":"BWCS-SMA207SL-3","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SMA207SL-1.webp?v=1779142875","url":"https:\/\/batteryweb.com\/products\/samsung-galaxy-a20s-replacement-battery-385v-3900mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}