{"product_id":"samsung-galaxy-s-hercules-replacement-battery-37v-1800mah-li-ion","title":"Samsung Galaxy S Hercules EB-L1D7IBA 3.7V Replacement Battery","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSamsung Galaxy S Hercules \/ SGH-T989 — 3.7V Li-ion Replacement Battery (EB-L1D7IBA)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1800mAh Li-ion cell built to the EB-L1D7IBA specification. It fits the Samsung Galaxy S Hercules (SGH-T989), Skyrocket (SGH-I727), and several other Samsung handsets on the same platform. Voltage and connector match the original, so the battery seats and contacts without modification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSGH-T989 and Skyrocket platform fit:\u003c\/strong\u003e\n    Both the T989 and I727 share the same battery bay dimensions, contact layout, and BMS handshake protocol. The cell voltage rail is 3.7V nominal across the entire family, so one SKU covers the group without adaptation.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell on an SGH-T989 and monitored BMS communication through full charge and discharge. The protection circuit engaged correctly at the low-voltage cutoff, and the charge IC accepted the cell without throwing a fault flag.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first install:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one complete discharge-to-charge cycle. This gives the fuel gauge IC a clean reference against the new cell's discharge curve before any high-current charge session 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 SGH-T989 after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC is still calibrated to the old cell's voltage curve. The phone reads 25% remaining, but the new cell hits its minimum voltage threshold under modem or display load before the gauge catches up. The result is an abrupt cutoff with no low-battery warning. One full discharge-to-charge cycle without fast charging resets the coulomb counter reference and eliminates the premature shutdown.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone warm near the battery during the first few charge cycles\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA fresh cell has higher internal impedance than a conditioned one. The charge IC works against that resistance during the constant-current phase, and the difference dissipates as heat in the battery compartment. This is normal for the first two or three cycles and settles as the cell conditions. If warmth persists beyond cycle three, check that the charge cable is not delivering a voltage spike above 5V — use a standard 5V\/1A adapter for the break-in period.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405041467482,"sku":"BWCS-SMT989XL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405041500250,"sku":"BWCS-SMT989XL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405041533018,"sku":"BWCS-SMT989XL-3","price":28.99,"currency_code":"USD","in_stock":true}],"url":"https:\/\/batteryweb.com\/products\/samsung-galaxy-s-hercules-replacement-battery-37v-1800mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}