{"product_id":"htc-7-trophy-replacement-battery-37v-1000mah-li-ion","title":"HTC 7 Trophy Replacement Battery 3.7V 1000mAh 35H00134-17M","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHTC 7 Trophy \/ T8686 — 3.7V Li-ion Replacement Battery (35H00134-17M)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1000mAh Li-ion cell that replaces part number 35H00134-17M in the HTC 7 Trophy Windows Phone. It fits the 7 Trophy, Spark, T8686, and M1 handsets. Voltage and capacity match the original specification exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e7 Trophy \/ Spark \/ T8686 \/ M1 platform fit:\u003c\/strong\u003e\n    These models share the same chassis footprint, connector pinout, and BMS handshake protocol. The 35H00134-17M cell drops into all of them without adapter changes or firmware workarounds.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell on a T8686 unit and logged charge acceptance across three full cycles. The BMS cleared charge-complete correctly and held the 4.2V terminal voltage within spec at end of charge.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    After fitting this cell, disable fast charging for the first complete discharge-charge cycle. This gives the fuel gauge IC time to map the new cell's discharge curve before high-current charging begins — skipping this step causes the percentage counter to recalibrate mid-use.\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 HTC 7 Trophy after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe 7 Trophy's fuel gauge IC holds a discharge curve calibrated to the old, degraded cell. A fresh 1000mAh cell has a steeper voltage cliff under modem and display load than the worn cell the IC was tracking. When load spikes — during a call or screen-on burst — the phone sees voltage drop past its cutoff threshold faster than the percentage counter reflects, and shuts down. One full discharge-charge cycle resets the coulomb counter and aligns it to the new cell's actual behaviour. After that cycle, the shutdowns stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone stays on the boot screen and won't fully start after storage discharge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf this cell was stored discharged, the BMS may have tripped into lockout below 2.5V to protect the cell. The phone appears to power on — the HTC logo shows — then stalls before Windows Phone loads. Connect the handset to a wall charger, not a PC USB port, and leave it undisturbed for 20–30 minutes. The charge IC needs sustained current at a low trickle rate to bring the cell voltage above the BMS recovery threshold, which sits around 2.9–3.0V. Once voltage clears that level, the BMS re-enables normal discharge and the phone boots fully.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405103759450,"sku":"BWCS-HT8686SL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405103792218,"sku":"BWCS-HT8686SL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405103824986,"sku":"BWCS-HT8686SL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HT8686SL-1.webp?v=1779369955","url":"https:\/\/batteryweb.com\/products\/htc-7-trophy-replacement-battery-37v-1000mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}