{"product_id":"ecom-39a-ex-replacement-battery-37v-2250mah-li-polymer","title":"Ecom iPAQ 39a-Ex Replacement Battery 3.7V 2250mAh 233488-001","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eEcom 39a-Ex — 3.7V Li-Polymer Replacement Battery (233488-001)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 2250mAh lithium-polymer battery replaces the OEM cell in the Ecom iPAQ 39a-Ex handheld PDA. It fits the 39a-Ex directly, restoring power to a device used for scheduling, contact management, and mobile field computing. Voltage and capacity match the original specification exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e39a-Ex platform fit:\u003c\/strong\u003e\n    The 39a-Ex runs a 3.7V single-cell architecture with a lithium-polymer pack. This battery matches that voltage rail, connector pinout, and BMS handshake — the device recognises it and charges normally through the cradle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on the 39a-Ex platform. The BMS accepted the pack without fault codes, and the charge controller brought it to full voltage without thermal events.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eRAM data protection before swap:\u003c\/strong\u003e\n    Sync all open files and application state to the host computer before removing the battery. The 39a-Ex stores active data in SRAM powered directly by the main cell — cutting power without syncing first causes data loss that cannot be recovered from the device itself.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the 39a-Ex shows a charging indicator but never reaches full charge\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eA degraded lithium-polymer cell can enter a state where the BMS reports charging activity but the cell voltage plateaus well below 4.2V. The cradle or USB charge circuit sees current draw and assumes the cycle is running, but the cell is not accepting a full charge. This is a cell-level failure, not a cradle fault. Replace the battery and verify the device reports full charge status in the system settings after a complete cycle.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003e39a-Ex not booting after new battery installed\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA fresh lithium-polymer replacement will often ship at a partial state of charge — sometimes below the minimum voltage the 39a-Ex boot sequence requires to initialise the OS. The device powers off immediately or shows nothing on screen. Place the battery in the charging cradle for at least one full charge cycle before attempting to power on. If the screen remains blank after a full charge, perform a soft reset by pressing the reset pin on the rear of the unit.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43415953080410,"sku":"BWCS-IP3800XL-1","price":31.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43415953113178,"sku":"BWCS-IP3800XL-2","price":35.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43415953145946,"sku":"BWCS-IP3800XL-3","price":39.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-IP3800XL-1.webp?v=1779758425","url":"https:\/\/batteryweb.com\/products\/ecom-39a-ex-replacement-battery-37v-2250mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}