{"product_id":"htc-touch-pro-2-replacement-battery-37v-2800mah-li-ion","title":"HTC Touch Pro 2 BA S390 Replacement Battery 3.7V 2800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHTC Touch Pro 2 — 3.7V Li-ion Replacement Battery (BA S390)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 2800mAh Li-ion replacement battery for the HTC Touch Pro 2 smartphone. It fits the T7373 and RHOD100 variants, sold under model names Touch Pro II as well. The OEM part numbers BA S390, RHOD160, 35H00123-00M, and 35H00123-02M all cross to this cell.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTouch Pro 2 platform compatibility:\u003c\/strong\u003e\n    The T7373 and RHOD100 share the same battery bay, connector pinout, and BMS handshake requirements. Any variant sold as Touch Pro II draws from the same voltage rail at 3.7V nominal, so one cell covers the full line.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the Touch Pro 2's charge IC and confirmed the BMS communicates correctly with the Windows Mobile power stack. Charge termination triggered at the correct cutoff voltage with no error flags logged.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    After fitting this cell, run one full discharge down to automatic shutdown, then charge uninterrupted to 100% before use. The Touch Pro 2's fuel gauge IC is calibrated against the old cell's discharge curve — skipping this step causes erratic percentage readings from day one.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the Touch Pro 2\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff issue, not a capacity problem. The Touch Pro 2's modem and screen draw spike current simultaneously during a call or screen-on event, pulling cell voltage below the BMS cutoff threshold even when the fuel gauge still shows charge remaining. An aged or freshly installed cell with an uncalibrated fuel gauge IC makes this worse because the reported percentage doesn't match actual state of charge. Run one full discharge-charge cycle to let the coulomb counter align with the new cell's actual capacity curve. After calibration, the shutdown point should move below 10%.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone won't power on after the battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells that discharge below approximately 2.5V per cell trigger a BMS lockout to prevent damage from deep discharge. The Touch Pro 2 shows nothing on screen in this state — it looks completely dead. Connect the phone to a wall charger, not a PC USB port, and leave it for at least 20–30 minutes without pressing the power button. The charge IC needs to trickle current into the cell to bring it above the BMS re-enable threshold, typically around 3.0V, before normal charging or boot can begin.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405143375962,"sku":"BWCS-HDP180HL-1","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405143408730,"sku":"BWCS-HDP180HL-2","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405143441498,"sku":"BWCS-HDP180HL-3","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HDP180HL-1.webp?v=1779370263","url":"https:\/\/batteryweb.com\/products\/htc-touch-pro-2-replacement-battery-37v-2800mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}