{"product_id":"verizon-xv6600-replacement-battery-37v-4200mah-li-ion","title":"Verizon XV6600 Replacement Battery 3.7V 4200mAh PH26B","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eVerizon XV6600 — 3.7V Li-ion Replacement Battery (PH26B)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V Li-ion cell replaces the original PH26B battery in the Verizon XV6600 Windows Mobile smartphone. Capacity is 4200mAh (15.54Wh). It fits the XV6600 directly using the original battery compartment and connector.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eXV6600 fit specifics:\u003c\/strong\u003e\n    The XV6600 uses a single-cell Li-ion pack with a proprietary connector keyed to the AHTXDSSN form factor. The BMS handshake is straightforward — no encrypted authentication chip — so the replacement cell communicates with the fuel gauge IC without additional pairing steps.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through full charge and discharge cycles on the XV6600 platform. The BMS held charge cutoff at 4.2V and low-voltage protection tripped correctly before cell damage could occur.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    After installing this cell, run one complete discharge down to auto-shutdown, then charge uninterrupted to 100%. The XV6600's fuel gauge IC was calibrated against the original cell's discharge curve — one full cycle resets that reference against the new cell so percentage readings stay accurate.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the XV6600 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe XV6600 uses a coulomb-counting fuel gauge IC that tracks charge in and out relative to a stored discharge curve. When you swap cells, the IC still references the old cell's profile — so a 4200mAh cell gets measured against a worn, lower-capacity baseline. This causes the percentage display to jump, stall, or read 100% well before the cell is actually full. One full discharge-to-shutdown followed by an uninterrupted charge resets the coulomb counter and aligns it to the new cell's actual capacity.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the XV6600 after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC hasn't completed its first full recalibration cycle and the voltage estimate is running ahead of actual cell voltage. Under screen-on or radio load, the cell voltage dips sharply near the lower end of its curve — faster than the uncalibrated IC predicts — and the BMS trips the low-voltage cutoff. The phone shuts down even though the display still shows 20–30%. Complete one full discharge-to-shutdown cycle, then charge to 100% without interruption. After that cycle, the IC recalculates the voltage cliff point and shutdown behaviour normalises.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409438343258,"sku":"BWCS-PH26BDL-1","price":40.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43409438376026,"sku":"BWCS-PH26BDL-2","price":46.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43409438408794,"sku":"BWCS-PH26BDL-3","price":51.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PH26BDL-big.webp?v=1779579689","url":"https:\/\/batteryweb.com\/products\/verizon-xv6600-replacement-battery-37v-4200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}