{"product_id":"htc-hd-mini-replacement-battery-37v-1100mah-li-ion","title":"HTC HD Mini Replacement Battery BB92100 3.7V 1100mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHTC HD Mini \/ T5555 — 3.7V Li-ion Replacement Battery (BB92100)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1100mAh Li-ion replacement battery for the HTC HD Mini and T5555 smartphones, including the HD Mini US and Photon variants. It replaces OEM part numbers BB92100, 35H00137-00M, BA S430, and 35H00137-01M. Physical dimensions are 45.66 × 41.78 × 6.20mm — measure your original before fitting if you are unsure.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHD Mini \/ T5555 platform fit:\u003c\/strong\u003e\n    All variants in this family — HD Mini, T5555, HD Mini US, Photon — share the same connector pinout and BMS handshake protocol. One cell covers the full range without hardware modification.\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 HD Mini platform. The BMS negotiated correctly, protection circuits tripped at expected voltage limits, and the charge IC accepted the cell without fault codes.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first install:\u003c\/strong\u003e\n    After fitting this cell, run one full discharge-to-charge cycle with fast charging disabled. This lets the fuel gauge IC map the new cell's discharge curve before it begins reporting percentages to the OS — skipping this step causes erratic percentage readings for the first several sessions.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the HD Mini reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe HD Mini uses a fuel gauge IC that learns the discharge curve of whatever cell is installed. When you swap to a new cell, the IC still holds the old cell's calibration data. It reads voltage and converts that to a percentage using the wrong reference curve. The result is that the phone may show 60% and then jump to 20% within minutes. One full, uninterrupted discharge down to auto-shutdown followed by a complete charge resets the coulomb counter and forces the IC to relearn against 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 what the modem or display backlight needs under load, even though the fuel gauge still reads a usable percentage. The HD Mini's processor and radio draw brief current spikes that cause an uncalibrated or partially discharged cell to sag below 3.2V — at that point the BMS cuts output instantly. It is not a faulty battery. Run two full discharge-charge cycles without interruption, and the fuel gauge IC will begin predicting that voltage cliff accurately and shut down gracefully before you hit it.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405128269914,"sku":"BWCS-HDM55SL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405128302682,"sku":"BWCS-HDM55SL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405128335450,"sku":"BWCS-HDM55SL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HDM55SL-1.webp?v=1779369992","url":"https:\/\/batteryweb.com\/products\/htc-hd-mini-replacement-battery-37v-1100mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}