{"product_id":"myphone-1080-replacement-battery-37v-1000mah-li-ion","title":"MyPhone MP-S-V Compatible Battery 3.7V 1000mAh for 1080","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMyPhone 1080 \/ 9010 \/ 9015TV — 3.7V Li-ion Replacement Battery (MP-S-V)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1000mAh Li-ion cell that replaces the original MP-S-V battery in the MyPhone 1080, 9010, and 9015TV smartphones. It fits the same footprint — 62 x 38 x 4.5mm — so it drops into the same battery bay without modification. Swap it when the original cell can no longer hold a charge through a normal day of calls, messaging, and app use.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e1080, 9010, and 9015TV compatibility:\u003c\/strong\u003e\n    These three MyPhone models share the same battery bay dimensions, connector pinout, and 3.7V nominal voltage rail, which is why one part number — MP-S-V — covers all three. The BMS handshake and thermistor line are identical across the platform.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on a test rig matching the 1080's charge IC parameters. The BMS held the correct 4.2V charge cutoff and triggered low-voltage protection right at the expected floor. No cell imbalance flags appeared during discharge.\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 for one complete discharge-charge cycle. This lets the fuel gauge IC map its coulomb counter against the new cell's actual 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\"\u003eWhy the MyPhone 1080 reports the wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC on the 1080 stores a learned discharge curve from the old cell. When a new cell goes in, the IC still references that old curve, so the percentage readout drifts from the real state of charge. This mismatch is most obvious between 40% and 15%, where the old curve and the new cell's actual voltage profile diverge the most. Run one full discharge down to automatic shutdown, then charge uninterrupted to 100% — this forces the coulomb counter to reset against the new cell and the percentage display stabilises.\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 happens when the modem fires a high-current burst — during a call or data transfer — and the cell voltage sags below the BMS protection threshold before the fuel gauge registers the drop. The gauge still shows 20–30% but the actual cell voltage has already fallen under load. It is not a faulty battery; it is the fuel gauge IC working from a stale calibration map. Complete the recalibration cycle described above and the BMS cutoff threshold — 3.0V under load — will align with what the gauge displays.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405050576986,"sku":"BWCS-NK4USL-1","price":21.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405050609754,"sku":"BWCS-NK4USL-2","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405050642522,"sku":"BWCS-NK4USL-3","price":26.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NK4USL-1.webp?v=1779579814","url":"https:\/\/batteryweb.com\/products\/myphone-1080-replacement-battery-37v-1000mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}