{"product_id":"samsung-galaxy-a15-4g-2024-replacement-battery-385v-5000mah-li-polymer","title":"Samsung Galaxy A15 4G EB-BA156ABY Compatible Battery 3.85V 5000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSamsung Galaxy A15 4G 2024 — 3.85V Li-Polymer Replacement Battery (EB-BA156ABY)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 5000mAh Li-Polymer replacement battery for the Samsung Galaxy A15 4G 2024. It fits SM-A155F\/N, SM-A155F\/DSN, SM-A155M\/N, and 18 additional regional variants sharing the same battery bay and connector. OEM part number EB-BA156ABY, with GH82-33639A as the corresponding service assembly reference.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSM-A155 series fit:\u003c\/strong\u003e\n    All listed SM-A155 variants use the same battery bay dimensions (87.70 × 63.70 × 5.00mm), the same flex connector pinout, and the same BMS handshake voltage thresholds — which is why one cell covers the full regional lineup without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on an SM-A155F unit and confirmed the BMS accepted the handshake on first boot, charge IC engaged correctly, and the coulomb counter initialised without error flags in the battery stats log.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first cycle:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one full discharge down to automatic shutdown, then charge to 100% on standard 5W. This gives the fuel gauge IC one clean reference cycle against the new cell's discharge curve before high-current charging is introduced.\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 Galaxy A15 after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff issue, not a capacity defect. Under peak modem load or a bright-screen burst, a new cell that hasn't been calibrated can sag below the BMS cutoff threshold while the fuel gauge still reads 20–30%. The phone cuts power because the instantaneous voltage drops below approximately 3.4V at the terminals, even though the reported state-of-charge looks healthy. One full discharge-charge cycle without fast charging lets the coulomb counter map the actual cell curve and eliminate the gap between reported and real voltage.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB-PD fast charge not recognised on first cycle after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eAfter a cell swap, the charge IC on the A15 sometimes refuses to negotiate fast-charge current on the first cycle because the BMS presents a high-impedance state until it completes one baseline charge pass. Plug into a standard 5W charger first — not the 25W adapter — and allow a full charge to 100%. Once that baseline pass is complete, the BMS lowers its impedance, the charge IC renegotiates the USB-PD contract, and fast charging activates normally from the second cycle onward.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391792808026,"sku":"BWCS-SMA150SL-1","price":43.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391792840794,"sku":"BWCS-SMA150SL-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391792873562,"sku":"BWCS-SMA150SL-3","price":56.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SMA150SL-1.webp?v=1779142051","url":"https:\/\/batteryweb.com\/products\/samsung-galaxy-a15-4g-2024-replacement-battery-385v-5000mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}