{"product_id":"t-mobile-sda-music-replacement-battery-37v-2200mah-li-ion","title":"T-Mobile SDA Music Replacement Battery BTR5600B 3.7V 2200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eT-Mobile SDA Music — 3.7V Li-ion Replacement Battery (BTR5600B)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V Li-ion cell replaces the BTR5600B in the T-Mobile SDA Music pocket PC and PDA. Capacity is 2200mAh (8.14Wh), matching the original specification. The SDA Music uses this battery for all functions — music playback, PDA applications, and wireless connectivity.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSDA Music platform fit:\u003c\/strong\u003e\n    The SDA Music shares the BTR5600B footprint with select HTC-platform PDAs from the same generation. The connector pinout and BMS voltage thresholds are identical across these devices, so the cell seats and communicates correctly without hardware 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 full-load discharge on SDA Music hardware. The BMS held the 4.2V charge ceiling without deviation and tripped the low-voltage cutoff at the correct threshold, protecting the cell during deep draw.\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 your host computer before removing the battery. The SDA Music stores active PDA data in SRAM powered directly by the main cell — pulling the battery without syncing first will erase unsaved data and open application state permanently.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the SDA Music drops wireless sync mid-session after a battery swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe SDA Music's radio draws a significant current spike when it initiates or re-establishes an ActiveSync connection. If the replacement cell hasn't been fully charged before use, its internal impedance causes a voltage sag under that draw. The device interprets the sag as a low-battery condition and throttles or drops the radio link. Charge the new battery to 4.2V before attempting any wireless sync session.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSDA Music stuck on boot screen after fitting a new battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe SDA Music boot sequence pulls more current than standby, and a new cell shipped at storage charge — typically around 3.6–3.7V — can sit right at the BMS's minimum boot threshold. The device either stalls mid-boot or loops back to the splash screen without completing startup. Connect the device to a charger and let the battery reach at least 3.9V before attempting to power on. A full charge to 4.2V before first boot eliminates this entirely.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43415950983258,"sku":"BWCS-DC585XL-1","price":29.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43415951016026,"sku":"BWCS-DC585XL-2","price":34.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43415951048794,"sku":"BWCS-DC585XL-3","price":37.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DC585XL-big.webp?v=1779758425","url":"https:\/\/batteryweb.com\/products\/t-mobile-sda-music-replacement-battery-37v-2200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}