{"product_id":"t-mobile-vibrant-replacement-battery-37v-1550mah-li-ion","title":"EB575152VU Replacement Battery for T-Mobile Vibrant 3.7V 1550mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eT-Mobile Vibrant \/ Galaxy S 4G — 3.7V Li-ion Replacement Battery (EB575152VU)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1550mAh Li-ion cell built to fit the T-Mobile Samsung Galaxy Vibrant, Galaxy S 4G, Vibrant 4G, and SGH-T959V. It slots into the original battery bay and connects to the same three-pin contact strip the phone's charge IC expects. Rated at 5.74Wh, it matches the stock capacity spec exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVibrant \/ Galaxy S 4G platform fit:\u003c\/strong\u003e\n    These models share the same chassis width, battery bay depth, and three-contact BMS handshake. The EB575152VU and its variants — EB575152VA, EB575152LU, EB575152LA — all use the same connector orientation and NTC thermistor pin, so the charge IC sees a valid cell on first boot.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through full charge and discharge on a Galaxy S 4G. The BMS negotiated correctly with the charge IC, the NTC thermistor reported within normal range, and the protection circuit tripped cleanly at the low-voltage cutoff floor — no false positives under screen-on load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first install:\u003c\/strong\u003e\n    After swapping in this cell, disable fast charging and run one complete discharge down to automatic shutdown, then charge uninterrupted to 100%. This gives the phone's coulomb counter a clean reference cycle against the new cell's actual discharge curve before it starts reporting percentage to the OS.\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 Vibrant after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens because the phone's fuel gauge IC is still running the discharge curve it mapped to the old, degraded cell. When the new cell hits a voltage point the old curve treated as near-empty, the OS calls a shutdown — even though real capacity remains. The fix is one full uninterrupted discharge-to-shutdown followed by a full charge. After that cycle, the coulomb counter remaps to the new cell and the 20–30% cliff disappears. If it persists past two cycles, check that the battery contacts are clean and seating flush — a high-resistance contact connection causes the same voltage sag under modem load.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone shows erratic or jumping percentage in the first day after installation\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Galaxy Vibrant's fuel gauge IC uses a stored charge table calibrated to the original cell. A fresh replacement cell has a different internal resistance profile, so early percentage readings will skip or jump as the IC tries to match real-time voltage readings to a table that no longer fits. This is not a faulty battery — it is a calibration mismatch. Run the phone down to 0% shutdown, then charge straight to 100% without interruption. After that single full cycle, percentage reporting stabilises because the IC has a clean data point at both ends of the cell's actual voltage range.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405089374298,"sku":"BWCS-SMG900ML-1","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405089407066,"sku":"BWCS-SMG900ML-2","price":31.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405089439834,"sku":"BWCS-SMG900ML-3","price":33.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SMG900ML-1.webp?v=1779369969","url":"https:\/\/batteryweb.com\/products\/t-mobile-vibrant-replacement-battery-37v-1550mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}