{"product_id":"samsung-sch-i909-replacement-battery-37v-2400mah-li-ion","title":"Samsung SCH-I909 Galaxy S Replacement Battery 3.7V 2400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSamsung SCH-I909 \/ Galaxy S (CDMA) — 3.7V Li-ion Replacement Battery (AB653850CC)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 2400mAh Li-ion replacement battery for the Samsung SCH-I909 and Galaxy S (CDMA). It replaces OEM parts AB653850CC and AB653850CU. The cell fits the original battery bay and reconnects to the device's charge IC via the standard three-contact board connector.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSCH-I909 and Galaxy S (CDMA) fitment:\u003c\/strong\u003e\n    Both models share the same battery bay dimensions, connector pinout, and BMS communication protocol. The 51.26 × 40.64 × 12.27mm cell fits either device 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 the SCH-I909 platform. The BMS accepted the handshake without triggering an incompatibility flag, and the charge IC reached the expected 4.2V termination voltage cleanly.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first cycle:\u003c\/strong\u003e\n    After installing a new cell, run one complete discharge to around 5% before recharging fully. The SCH-I909's coulomb counter is still mapped to the old cell's discharge curve — skipping this step causes the fuel gauge to report inaccurate percentages for weeks.\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 SCH-I909 after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe SCH-I909 uses a voltage-based fuel gauge that maps a specific discharge curve to percentage readings. A new cell has a slightly different internal resistance profile than the aged cell it replaces. Under modem or display load, voltage drops sharply at a point the fuel gauge still reads as 20–30%, triggering an emergency shutdown before the displayed percentage reaches zero. One full discharge-charge cycle lets the coulomb counter re-anchor its low-voltage cutoff to the new cell's actual curve, eliminating premature shutdowns.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDevice won't power on after the battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells discharged below approximately 2.5V trigger a BMS lockout — the protection circuit opens to prevent cell damage, and the phone shows no response to the power button. Connect the device to a wall charger, not a USB port, and leave it for 15–20 minutes without pressing anything. The charge IC on the SCH-I909 delivers a low trickle current that slowly pulls the cell voltage back above the BMS re-enable threshold. Once voltage crosses roughly 2.9V, the BMS closes and normal charging resumes.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405096190042,"sku":"BWCS-SMI909XL-1","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405096222810,"sku":"BWCS-SMI909XL-2","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405096255578,"sku":"BWCS-SMI909XL-3","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SMI909XL-1.webp?v=1779369970","url":"https:\/\/batteryweb.com\/products\/samsung-sch-i909-replacement-battery-37v-2400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}