{"product_id":"samsung-galaxy-a16-5g-replacement-battery-388v-4850mah-li-polymer","title":"Samsung Galaxy A16 5G Replacement Battery EB-BA166ABY 4850mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSamsung Galaxy A16 5G — 3.88V Li-Polymer Replacement Battery (EB-BA166ABY)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.88V, 4850mAh lithium-polymer cell built to replace the original EB-BA166ABY battery in the Samsung Galaxy A16 5G. It fits SM-A166B, SM-A166B\/DS, SM-A166E, and additional SM-A166 variants. Capacity matches the factory spec at 18.82Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSM-A166 variant compatibility:\u003c\/strong\u003e\n    All SM-A166 models share the same battery bay dimensions, connector pinout, and BMS handshake protocol — the same cell covers the full variant range without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on an SM-A166B unit. The BMS accepted the cell without error flags, and the charge IC stepped through trickle, CC, and CV phases cleanly at both standard and fast-charge rates.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle fast-charge protocol:\u003c\/strong\u003e\n    On first use after installation, disable fast charging for one complete discharge-charge cycle. The fuel gauge IC is still calibrated to the old cell's discharge curve — running fast charge before recalibration pushes high current into an uncalibrated cell and can cause early charge termination on subsequent cycles.\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\"\u003eAfter a cell swap, the Galaxy A16 5G's fuel gauge IC still holds the discharge curve from the original degraded battery. When the phone hits 20–30% reported charge, the new cell's actual voltage may already be at a point where modem radio bursts or screen backlight spikes pull the cell below the BMS cutoff threshold. The BMS trips, and the phone shuts off — not because the cell is empty, but because the gauge is reading the wrong curve. One full discharge-to-shutdown followed by an uninterrupted charge to 100% lets the coulomb counter reset against the new cell. After that cycle, shutdowns at false percentages stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB-PD fast charge not negotiating on the first cycle after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eOn the first charge cycle after fitting the EB-BA166ABY replacement, some units stay in standard 5W charging even when plugged into a fast-charge adapter. The new cell's BMS presents a higher impedance than the worn original, which can cause the charge IC to fall back to a lower current profile while it maps the cell's internal resistance. This is not an adapter or cable fault. Let the first full charge complete at the standard rate — on the second cycle, the charge IC renegotiates with the correct current ceiling and fast charging resumes at its full rate.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391781896282,"sku":"BWCS-SMA160SL-1","price":46.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391781929050,"sku":"BWCS-SMA160SL-2","price":54.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391781961818,"sku":"BWCS-SMA160SL-3","price":60.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SMA160SL-1.webp?v=1779141908","url":"https:\/\/batteryweb.com\/products\/samsung-galaxy-a16-5g-replacement-battery-388v-4850mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}