{"product_id":"i-mate-ultimate-9502-replacement-battery-37v-1700mah-li-polymer","title":"I-Mate Ultimate 9502 Replacement Battery 3.7V 1700mAh 303ATL0000A","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eI-Mate Ultimate 9502 — 3.7V Li-Polymer Replacement Battery (303ATL0000A)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 1700mAh lithium-polymer battery is a direct cell replacement for the I-Mate Ultimate 9502 Windows Mobile PDA phone. It matches OEM part numbers 303ATL0000A and L017YS0100732, fitting the original battery bay without modification. Capacity data is sourced from the product specification — 6.29Wh total energy at nominal voltage.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eUltimate 9502 platform fit:\u003c\/strong\u003e\n    The 9502 uses a slim Li-Polymer pouch cell with specific dimensional tolerances — 74.20 × 46.50 × 5.20mm. Any deviation in thickness causes cover fitment issues or connector misalignment. This cell matches those tolerances and uses the same connector pinout as the OEM unit.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge while monitoring BMS cutoff behaviour. The protection circuit trips cleanly at the low-voltage threshold, and the charge IC accepted standard 4.2V CV\/CC termination without error flags.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first install:\u003c\/strong\u003e\n    After fitting this cell, run one complete discharge to automatic shutoff, then charge uninterrupted to 100% before normal use. The Ultimate 9502's fuel gauge IC is calibrated to the old cell's discharge curve — skipping this step causes the OS to misread state-of-charge from the first power-on.\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 replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff issue, not a capacity fault. When the modem transmits or the display brightness spikes, current draw pulls the cell voltage below the BMS cutoff threshold before the fuel gauge reads zero. A new cell with an uncalibrated coulomb counter makes this worse — the IC doesn't know the actual remaining energy. Run one full discharge-to-shutoff cycle, then a full charge, to give the fuel gauge IC a real baseline. After that cycle, shutdowns below 20% should stop unless the cell itself is damaged.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDevice not powering on after the battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-Polymer cells that drop below approximately 2.5V per cell trigger BMS lockout — the protection circuit disconnects the cell to prevent damage from deep discharge. The 9502 will show no response to the power button and no charging indicator. Connect it to a wall charger, not a PC USB port, and leave it for 20–30 minutes without pressing anything. Most BMS circuits re-initialise once the charger pushes enough current to bring cell voltage back above the lockout threshold — typically around 2.9–3.0V — at which point the device will begin a normal charge cycle.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405207273562,"sku":"BWCS-MU9502SL-1","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405207306330,"sku":"BWCS-MU9502SL-2","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405207339098,"sku":"BWCS-MU9502SL-3","price":33.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MU9502SL-1.webp?v=1779370333","url":"https:\/\/batteryweb.com\/products\/i-mate-ultimate-9502-replacement-battery-37v-1700mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}