{"product_id":"t-mobile-mda-touch-replacement-battery-37v-2000mah-li-ion","title":"T-Mobile MDA Touch ELF0160 Replacement Battery 3.7V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eT-Mobile MDA Touch — 3.7V Li-ion Replacement Battery (ELF0160)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 2000mAh Li-ion cell replaces the original battery in the T-Mobile MDA Touch smartphone. It restores power to the Windows Mobile platform, covering calls, messaging, and app use. Voltage and capacity match the OEM spec exactly — no adapter or modification needed.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMDA Touch platform fit:\u003c\/strong\u003e\n    The MDA Touch uses a single-cell 3.7V nominal Li-ion configuration with a standard connector block. This replacement matches that rail and the BMS handshake the device expects on boot — no voltage mismatch, no false low-battery flag on first power-on.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through a full charge and load discharge on the MDA Touch chassis. The BMS held the charge termination voltage at 4.2V and cut load cleanly at the 3.0V floor — both within OEM parameters.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first cycle:\u003c\/strong\u003e\n    After fitting this cell, run one full discharge to auto-shutdown, then charge uninterrupted to 100%. The MDA Touch fuel gauge IC uses coulomb counting anchored to the old cell's curve — one full cycle writes a new baseline and stops erratic percentage readings.\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 Touch reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe MDA Touch uses a coulomb-counting fuel gauge IC that builds its charge model against the previous cell's discharge curve. When a new cell goes in, that stored curve no longer matches the actual chemistry. The gauge reports stale data until it collects a full discharge-to-charge cycle on the new cell. One uninterrupted cycle from 100% down to auto-shutdown, then back to 4.2V, resets the reference and the percentage 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 cell voltage drops sharply under the combined load of the modem radio and backlit screen — a voltage cliff the fuel gauge didn't predict. The gauge still shows 20–30% remaining, but the cell can't hold voltage above the 3.0V BMS cutoff under that load, so the device shuts off instantly. It's not a faulty battery — it's a calibration gap. Run two full discharge-charge cycles and the gauge learns where the real voltage cliff sits on this cell.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405256327258,"sku":"BWCS-DTS1XL-1","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405256360026,"sku":"BWCS-DTS1XL-2","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405256392794,"sku":"BWCS-DTS1XL-3","price":33.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DTS1XL-1.webp?v=1779370349","url":"https:\/\/batteryweb.com\/products\/t-mobile-mda-touch-replacement-battery-37v-2000mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}