{"product_id":"sprint-ppc-6601-replacement-battery-37v-4200mah-li-ion","title":"PH26B Sprint PPC-6601 Replacement Battery 3.7V 4200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSprint PPC-6601 — 3.7V Li-ion Replacement Battery (PH26B)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V Li-ion battery rated at 4200mAh (15.54Wh) for the Sprint PPC-6601 Windows Mobile smartphone. It replaces OEM part numbers PH26B and AHTXDSSN. Fit is confirmed by matching connector pinout, physical dimensions (84.78 × 58.32 × 11.68mm), and BMS communication protocol.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003ePPC-6601 platform fit:\u003c\/strong\u003e\n    The PPC-6601 uses a single-cell Li-ion pack at 3.7V nominal. This replacement matches that voltage rail and the contact alignment the device's charge IC expects. No adapter or modification needed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through full charge and discharge on a PPC-6601 unit. The BMS communicated correctly with the charge IC throughout, and charge termination triggered at the correct cutoff voltage without error flags.\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 full discharge down to automatic shutdown, then charge uninterrupted to 100% before using the device normally. The PPC-6601's fuel gauge IC was calibrated to your old cell's discharge curve — one complete cycle resets that baseline against the new cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the PPC-6601 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe PPC-6601 uses a coulomb counter in its fuel gauge IC to track charge state. That counter builds a model of the cell's discharge curve over multiple cycles. When you swap in a new cell, the counter is still referencing the old cell's degraded curve — so the percentage readout is inaccurate until it recalibrates. One complete discharge-to-shutdown followed by a full uninterrupted charge gives the IC enough data to rebuild the curve against the new cell. After that cycle, percentage readings stabilise.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on a freshly installed cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC hasn't recalibrated yet and the phone hits a voltage cliff under load — the modem or display draws current the IC didn't predict at that state of charge. The cell voltage drops below the BMS's cutoff threshold faster than the percentage reading reflects, and the phone shuts off to protect the cell. It is not a fault in the replacement battery. Run one full discharge cycle and the IC will map the actual voltage-to-capacity curve of the new cell, pushing that cliff below 5% where it belongs.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409438802010,"sku":"BWCS-PH26BDL-1","price":40.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43409438834778,"sku":"BWCS-PH26BDL-2","price":46.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43409438867546,"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\/sprint-ppc-6601-replacement-battery-37v-4200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}