{"product_id":"samsung-sph-m330-replacement-battery-37v-900mah-li-ion","title":"Samsung EB424255VA Replacement Battery 3.7V 900mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSamsung SPH-M330 \/ SPH-M350 Series — 3.7V Li-ion Replacement Battery (EB424255VA)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 900mAh Li-ion cell built to fit the Samsung SPH-M330, SPH-M340, SPH-M350, and Seek SPH-M350, along with over 60 compatible handsets sharing the same battery bay. It replaces OEM part numbers EB424255VA, EB424255VU, EB424255VABSTD, and EB424255VUCSTD. If your original cell no longer holds a charge through a normal day, this is a direct swap.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSPH-M330 \/ M340 \/ M350 platform fit:\u003c\/strong\u003e\n    These handsets share the same battery connector pinout and BMS handshake protocol across the series. The cell dimensions — 54.72 x 41.80 x 4.50mm — match the battery bay exactly, and the protection circuit communicates correctly with the charge IC on each supported model.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through full charge-discharge cycles on compatible handsets. The BMS engaged cutoff correctly at low-voltage thresholds and accepted charge current without triggering fault states on the device charge IC.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first install:\u003c\/strong\u003e\n    After fitting this cell, run one complete discharge down to automatic shutdown, then charge uninterrupted to 100% before using the phone normally. The SPH-M330's fuel gauge IC is calibrated to the old cell's discharge curve — skipping this step causes erratic percentage readings from the first charge onward.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the SPH-M330 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC on these Samsung handsets uses a coulomb counter that tracks charge in and out of the original cell. When you install a new cell, the counter's stored reference curve no longer matches the actual discharge profile of the replacement. The IC continues using stale calibration data, so the percentage display drifts — often reading 40% when the cell is nearly depleted. One full discharge-to-shutdown followed by an uninterrupted charge to 4.2V resets the reference and brings the gauge back into alignment.\u003c\/p\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\"\u003eThis is a voltage cliff issue, not a capacity problem. Under screen or radio load, the cell voltage drops sharply — faster than the fuel gauge can track — and the BMS cuts power before the display percentage reaches zero. It happens most often in the first few cycles on a new cell before the coulomb counter has accurate data. Run two full discharge-charge cycles and the shutdowns typically stop. If they continue after two cycles, check that the battery contacts are clean and seating flat — poor contact increases internal resistance and accelerates the voltage drop under load.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405120569434,"sku":"BWCS-SMT560SL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405120602202,"sku":"BWCS-SMT560SL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405120634970,"sku":"BWCS-SMT560SL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SMT560SL-1.webp?v=1779370243","url":"https:\/\/batteryweb.com\/products\/samsung-sph-m330-replacement-battery-37v-900mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}