{"product_id":"t-mobile-mda-compact-iii-replacement-battery-37v-2400mah-li-ion","title":"T-Mobile MDA Compact III Compatible Battery ARTE160 3.7V 2400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eT-Mobile MDA Compact III — 3.7V Li-ion Replacement Battery (ARTE160)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 2400mAh Li-ion battery replaces the original cell in the T-Mobile MDA Compact III smartphone. It fits using OEM part references ARTE160 and 35H00062-04M. Capacity is rated at 8.88Wh, matching the original power envelope for this handset.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMDA Compact III platform fit:\u003c\/strong\u003e\n    The MDA Compact III uses a fixed connector pinout and a BMS handshake tied to the original 3.7V cell spec. This replacement matches that voltage rail and connector geometry, so the charge IC recognises the cell on first insertion.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the MDA Compact III charge IC and confirmed the BMS completed a full charge cycle without triggering overcurrent cutoff. Coulomb counter initialisation completed normally after one full discharge.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first cycle:\u003c\/strong\u003e\n    After installing a new cell, disable fast charging if supported and run one complete discharge-charge cycle before heavy use. This lets the fuel gauge IC map its charge curve against the new cell before high-current charging begins on an uncalibrated reference.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the MDA Compact III reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe MDA Compact III uses a fuel gauge IC that stores a learned discharge curve from the previous cell. When a new cell goes in, that stored curve no longer matches the actual cell chemistry. The IC interpolates percentage from the wrong reference, so the display reads inaccurately until recalibration completes. One full discharge to automatic shutoff followed by an uninterrupted charge to 100% resets the coulomb counter and aligns the gauge to the new cell.\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 BMS cutoff threshold under screen or radio load, even though the fuel gauge still reads 20–30%. The new cell has a steeper voltage curve than the aged cell the gauge was calibrated to, so actual voltage collapses before the percentage display reflects it. The fix is the same recalibration cycle — discharge fully until the device shuts itself off, then charge uninterrupted to 100%. After two full cycles the gauge tracks the new curve accurately and premature shutoffs stop.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405153042522,"sku":"BWCS-DP800XL-1","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405153075290,"sku":"BWCS-DP800XL-2","price":31.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405153108058,"sku":"BWCS-DP800XL-3","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DP800XL-1.webp?v=1779370298","url":"https:\/\/batteryweb.com\/products\/t-mobile-mda-compact-iii-replacement-battery-37v-2400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}