{"product_id":"samsung-galaxy-j7-2017-replacement-battery-385v-3600mah-li-polymer","title":"Samsung Galaxy J7 2017 Replacement Battery EB-BJ730ABE 3600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSamsung Galaxy J7 2017 — 3.85V Li-Polymer Replacement Battery (EB-BJ730ABE)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3600mAh, 3.85V lithium-polymer battery for the Samsung Galaxy J7 2017 and Galaxy J7 Pro 2017 Duos. It replaces part number EB-BJ730ABE across SM-J730G\/DS and related variants. Capacity is 13.86Wh — matching the original cell specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eJ7 2017 and J7 Pro 2017 Duos compatibility:\u003c\/strong\u003e\n    These models share the same physical cell format, connector pinout, and BMS handshake protocol. The SM-J730G\/DS and TD-LTE Duos variants draw from the same voltage rail, so one cell covers the full range without modification.\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 SM-J730G hardware. The BMS communicated correctly with the charge IC on each pass, and the fuel gauge IC accepted the cell without throwing calibration errors after the first full cycle.\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 and complete one full discharge-charge cycle at standard rate. This lets the fuel gauge IC map the new cell's 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\"\u003eSudden shutdown at 20–30% on the J7 2017 after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff issue, not a capacity fault. Under peak load — modem transmitting or display at full brightness — the new cell momentarily drops below the shutdown threshold the fuel gauge IC is watching. The IC triggers a hard cutoff even though the coulomb counter still shows charge remaining. One full recalibration cycle — full discharge to below 5%, then charge uninterrupted to 100% — resets the threshold mapping and eliminates most of these events.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone won't power on after sitting in storage for several months\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLithium-polymer cells self-discharge in storage. If the cell drops below approximately 2.5V, the BMS enters a lockout state and blocks charge current to prevent thermal runaway on a deeply discharged cell. The phone will show nothing when you press the power button or connect a charger. Connect to a wall adapter — not a PC USB port — and leave it for 20–30 minutes without pressing anything. The BMS requires a sustained low-current trickle before it will re-initialise and allow normal charging to resume.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392054460506,"sku":"BWCS-SMJ730XL-1","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392054493274,"sku":"BWCS-SMJ730XL-2","price":28.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392054526042,"sku":"BWCS-SMJ730XL-3","price":31.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SMJ730XL-1.webp?v=1779143526","url":"https:\/\/batteryweb.com\/products\/samsung-galaxy-j7-2017-replacement-battery-385v-3600mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}