{"product_id":"meilan-s6-replacement-battery-385v-2900mah-li-polymer","title":"Meilan S6 Replacement Battery BA712 3.85V 2900mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMeilan S6 — 3.85V Li-Polymer Replacement Battery (BA712)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThe BA712 is a 3.85V, 2900mAh lithium-polymer cell that fits the Meilan S6 smartphone. It replaces the original battery when capacity has dropped to the point where the phone can no longer hold a usable charge through a normal day. Dimensions are 72.33 × 61.90 × 3.85mm — measure your original before fitting to confirm the match.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMeilan S6 fitment:\u003c\/strong\u003e\n    The S6 uses a flat Li-Polymer pouch cell with a dedicated BMS board. The BA712 matches the original connector pinout and voltage rail, so the charge IC communicates correctly with the replacement cell without triggering a fault state.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran the BA712 through full charge and discharge cycles on the S6 platform. The BMS accepted the cell on the first cycle, charge termination triggered correctly at 4.35V, and low-voltage cutoff activated as expected without tripping a hard lockout.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging pushes current into an uncalibrated register — preventing erratic percentage readings from the first week.\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 Meilan S6\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the cell cannot hold its voltage above the BMS cutoff threshold under the load spikes from the modem or display. The fuel gauge IC reads a nominal state of charge, but actual terminal voltage collapses momentarily under peak current draw. It is most common in the first few cycles before the coulomb counter has a full discharge profile to work from. Run two complete discharge-charge cycles without fast charging to give the gauge IC enough data to predict the voltage cliff accurately.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eOS reporting wrong battery percentage after cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC on the S6 stores a learned discharge curve from the original cell. After fitting a replacement, the stored curve no longer matches the new cell's actual voltage-to-capacity relationship. The phone reads voltage correctly but maps it to the wrong percentage. One full discharge to automatic shutdown followed by an uninterrupted charge to 100% resets the coulomb counter to the new cell's curve.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392022184026,"sku":"BWCS-MX712SL-1","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392022216794,"sku":"BWCS-MX712SL-2","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392022249562,"sku":"BWCS-MX712SL-3","price":30.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MX712SL-1.webp?v=1779142963","url":"https:\/\/batteryweb.com\/products\/meilan-s6-replacement-battery-385v-2900mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}