{"product_id":"softbank-x05ht-replacement-battery-37v-2400mah-li-ion","title":"DIAM171 SoftBank X05HT Replacement Battery 3.7V 2400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSoftBank X05HT \/ Touch Pro — 3.7V Li-ion Replacement Battery (DIAM171)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 2400mAh Li-ion replacement battery for the SoftBank X05HT and HTC Touch Pro. It replaces OEM part numbers DIAM171, 35H00111-08M, and 35H00111-06M. The cell fits the original battery bay and connects to the device's existing charge circuit without modification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eX05HT and Touch Pro compatibility:\u003c\/strong\u003e\n    Both devices share the same physical battery bay, connector pinout, and BMS handshake protocol — the X05HT is the SoftBank-branded variant of the Touch Pro hardware platform, so one cell covers both.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on Touch Pro hardware. The BMS accepted the cell without fault codes, and the charge IC stepped through trickle, constant-current, and constant-voltage phases normally.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first install:\u003c\/strong\u003e\n    After fitting this cell, disable any fast-charge accessory for the first full discharge-to-charge cycle. This allows the fuel gauge IC to map the new cell's discharge curve before high-current charging pushes current into an uncalibrated register — preventing erratic percentage readings from the first day.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the X05HT reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe X05HT uses a fuel gauge IC that tracks charge state against a stored discharge curve from the original cell. When you fit a new cell, that stored curve no longer matches the actual voltage-to-capacity relationship of the replacement. The IC keeps reading against the old reference, so it may report 40% when the cell is at 20%. One complete slow discharge down to auto-shutoff, followed by a full charge, forces the IC to re-anchor its reference points against the new cell's actual curve.\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 the combined load of the WCDMA radio, screen backlight, and Windows Mobile background processes, the cell voltage drops sharply below the BMS cutoff threshold — even though the fuel gauge still shows charge remaining. The gauge reports stored coulombs, not real-time voltage. If shutdowns happen consistently above 20%, check that the cell voltage at shutdown is at or below 3.4V — if it is, the BMS is operating correctly and the fuel gauge simply needs a full recalibration cycle to align its readings with the new cell's actual voltage curve.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405194690650,"sku":"BWCS-HDP100XL-1","price":28.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405194723418,"sku":"BWCS-HDP100XL-2","price":32.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405194756186,"sku":"BWCS-HDP100XL-3","price":35.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HDP100XL-1.webp?v=1779370333","url":"https:\/\/batteryweb.com\/products\/softbank-x05ht-replacement-battery-37v-2400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}