{"product_id":"typhoon-myguide-5500-replacement-battery-37v-2200mah-li-ion","title":"Typhoon MyGuide 5500 Compatible Battery 3.7V 2200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eTyphoon MyGuide 5500 \/ 5500XL — 3.7V Li-ion Replacement Battery (029521-83159-7)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V 2200mAh Li-ion battery for the Typhoon MyGuide 5500 and MyGuide 5500XL portable GPS navigation devices. It replaces OEM part numbers 029521-83159-7 and B521103. The cell fits the original battery bay with no modification and reconnects to the device BMS via the stock connector.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMyGuide 5500 and 5500XL compatibility:\u003c\/strong\u003e\n    Both models share the same 3.7V single-cell architecture, battery bay dimensions (67.89 × 52.40 × 5.52mm), and BMS handshake protocol — one cell covers both variants without any firmware or connector difference.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell on the MyGuide 5500 platform and confirmed the BMS accepted the charge curve without triggering a protection cutoff. The device registered battery presence correctly on first boot after installation.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eGPS lock and RAM sync before swap:\u003c\/strong\u003e\n    The MyGuide 5500 holds open map data and route state in RAM powered directly by the main battery. Before removing the old cell, save any active route and allow the device to complete a full shutdown — pulling power mid-session drops unsaved data immediately.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the MyGuide 5500 loses stored settings after a battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe MyGuide 5500 uses SRAM for volatile storage — this memory requires continuous battery power to retain data. The moment the old battery is disconnected and before the new one seats fully, SRAM loses power and clears. Saved favourites, home addresses, and custom settings stored only in RAM are gone at that point. To protect this data, export or sync to a PC before the swap, then restore after the new battery is charged and the device is stable.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eMyGuide 5500 showing charging indicator but not turning on after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the replacement cell ships at storage charge — typically 30–40% — below the minimum threshold the boot sequence needs to initialise the GPS module and display. The device draws more current at startup than during idle navigation, so a partially charged cell can pass trickle charge detection but still fail to sustain boot. Connect the device to the charger for at least 90 minutes before attempting to power on. Once the cell reaches approximately 3.9V, the boot sequence completes normally.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43415953735770,"sku":"BWCS-A620XL-1","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43415953768538,"sku":"BWCS-A620XL-2","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43415953801306,"sku":"BWCS-A620XL-3","price":30.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-A620XL-1.webp?v=1779758424","url":"https:\/\/batteryweb.com\/products\/typhoon-myguide-5500-replacement-battery-37v-2200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}