{"product_id":"htc-p3600-replacement-battery-37v-1250mah-li-polymer","title":"HTC P3600 35H00077-00M Replacement Battery 3.7V 1250mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHTC P3600 Series — 3.7V Li-Polymer Replacement Battery (35H00077-00M)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 1250mAh Li-Polymer cell replaces the original battery in the HTC P3600, P3600i, P4000, and P6300 smartphones. It matches the OEM footprint at 66.50 × 44.00 × 4.50mm and connects directly to the stock battery contacts. Voltage and capacity figures match the 35H00077-00M specification exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eP3600 series compatibility:\u003c\/strong\u003e\n    The P3600, P3600i, P4000, and P6300 share the same battery bay dimensions, contact layout, and 3.7V power rail. One cell fits all four devices without any modification to the housing or connector.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through a full charge and discharge sequence and confirmed the BMS communicates correctly with the charge IC — no false full-charge termination and no premature cutoff at the low-voltage threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    After fitting this cell, disable any fast-charge accessory and run one complete discharge-charge cycle at standard current. This lets the fuel gauge IC map the new cell's discharge curve before the OS starts reading percentage against it.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the P3600 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe HTC P3600 uses a fuel gauge IC that tracks charge state against a stored discharge curve from the original cell. A new cell has different internal impedance, so the IC's coulomb counter starts out of sync. The phone may show 100% and then drop sharply, or hold a high percentage until a sudden shutdown. One full discharge down to automatic cutoff followed by an uninterrupted charge to 100% forces the IC to re-learn the curve 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 the modem's minimum operating threshold under transmission load, even though the fuel gauge still reads 20–30%. The original fuel gauge calibration mapped a worn cell's voltage sag, not a fresh one with different sag characteristics. Under GSM burst transmissions, instantaneous current draw causes a voltage dip the uncalibrated gauge did not anticipate. Run two full discharge-charge cycles and the gauge will shift its low-voltage warning to the correct point — typically around 3.5V under load.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405215072346,"sku":"BWCS-DD810SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405215105114,"sku":"BWCS-DD810SL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405215137882,"sku":"BWCS-DD810SL-3","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DD810SL-1.webp?v=1779370349","url":"https:\/\/batteryweb.com\/products\/htc-p3600-replacement-battery-37v-1250mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}