{"product_id":"myphone-8830-replacement-battery-37v-1500mah-li-ion","title":"MyPhone MP-0-1 Replacement Battery 3.7V 1500mAh Li-ion 8830","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMyPhone 8830 Series — 3.7V Li-ion Replacement Battery (MP-0-1)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1500mAh Li-ion cell that replaces the original battery in the MyPhone 8830 and 8830 TV smartphones. It matches the OEM part number MP-0-1 and fits the physical bay without modification. Capacity figures come from product data — 5.55Wh total energy.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e8830 and 8830 TV compatibility:\u003c\/strong\u003e\n    Both models run the same 3.7V single-cell architecture with an identical battery bay footprint at 66.31 × 41.99 × 6.65mm. The connector pinout and BMS handshake protocol are shared across the TV and non-TV variants, so one cell covers both.\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 the 8830 platform. The BMS accepted the cell without a fault flag, and the charge IC completed a full CC\/CV cycle to 4.2V without interruption.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle fast charge handling:\u003c\/strong\u003e\n    On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC recalibrate its discharge curve against the new cell before high-current charging is applied to 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 8830 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe 8830 uses a fuel gauge IC that builds its state-of-charge model from repeated discharge cycles against the original cell. When a new cell goes in, the IC still references the old discharge curve. It will show inaccurate percentages — sometimes 20% higher or lower than actual — until it recalibrates. Run one complete discharge to automatic shutdown followed by a full uninterrupted charge. After that single cycle, the fuel gauge maps its curve to the new cell and percentage readings stabilise.\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 cell voltage drops below the modem or display's minimum operating threshold before the fuel gauge reaches zero. Under combined screen-on and modem load, the cell cannot sustain voltage above the BMS cutoff even though the reported percentage looks safe. It is a calibration gap, not a faulty cell. Run one full discharge-to-cutoff cycle without interruption — the fuel gauge will anchor its low-voltage endpoint correctly and the premature shutdowns will stop.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405046775898,"sku":"BWCS-MYP830SL-1","price":28.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43405046808666,"sku":"BWCS-MYP830SL-2","price":32.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43405046841434,"sku":"BWCS-MYP830SL-3","price":35.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MYP830SL-1.webp?v=1779369883","url":"https:\/\/batteryweb.com\/products\/myphone-8830-replacement-battery-37v-1500mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}