{"product_id":"palm-m550-replacement-battery-37v-1100mah-li-polymer","title":"Palm M550 IA1TA16A0 Compatible Battery 3.7V 1100mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePalm M550 \/ Tungsten Series — 3.7V Li-Polymer Replacement Battery (IA1TA16A0)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 1100mAh Li-Polymer cell replaces the original battery in the Palm M550 Pocket PC and the Tungsten T1, T2, and T3 handhelds. It matches the OEM voltage and physical dimensions (51.06 × 33.02 × 5.32mm) required for proper fitment and connector engagement. Use it to restore a PDA that no longer holds charge or powers on reliably.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMulti-model fit — M550 and Tungsten platform:\u003c\/strong\u003e\n    These models share a common battery footprint, voltage rail, and connector pinout. The M550 and Tungsten T1 through T3 all draw from the same 3.7V Li-Polymer architecture, so one cell covers the full group without modification.\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 on a Palm Tungsten T3 unit. The BMS held charge acceptance cleanly from 3.0V upward and terminated correctly at full capacity without thermal event or cutoff trip.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eSync before you swap:\u003c\/strong\u003e\n    The M550 and Tungsten handhelds keep open files, unsaved notes, and application state in volatile SRAM. That memory is powered entirely by the main battery. Remove the cell before syncing and that data is gone. Do a full HotSync to your host computer first, then swap the battery.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Tungsten T3 won't complete a boot after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Tungsten T3 boot sequence draws a surge of current to initialise the processor and load the OS from flash into SRAM. A freshly installed cell shipped at storage charge — typically 30–50% — can sag below the minimum voltage threshold that triggers this load. The device stalls mid-boot or shows nothing on screen. This is not a faulty battery. Charge the cell fully before attempting first boot, and the sequence completes normally.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWireless sync dropping or stalling on the M550 after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe M550's IR and Bluetooth radio modules are voltage-sensitive and pull harder than standby loads. If the replacement cell is not fully charged, voltage under radio load can sag enough to cause the sync to stall, drop, or throw a connection error. This gets misread as a software or cradle problem. Charge the battery to full — confirmed by the charge LED extinguishing — then retry the HotSync before troubleshooting the connection further.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43415955701850,"sku":"BWCS-PM550XL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43415955734618,"sku":"BWCS-PM550XL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43415955767386,"sku":"BWCS-PM550XL-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PM550XL-1.webp?v=1779758425","url":"https:\/\/batteryweb.com\/products\/palm-m550-replacement-battery-37v-1100mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}