{"product_id":"o2-o2-xda-mantle-replacement-battery-37v-2200mah-li-polymer","title":"O2 XDA Mantle Replacement Battery 3.7V 2200mAh 35H00077-00M","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eO2 XDA Mantle — 3.7V Li-Polymer Replacement Battery (35H00077-00M)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 2200mAh lithium-polymer cell replaces the original battery in the O2 XDA Mantle smartphone. It fits the XDA Mantle directly and matches the OEM voltage and connector. Capacity is rated at 8.14Wh — use the product data figure, not third-party estimates.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eXDA Mantle platform fitment:\u003c\/strong\u003e\n    The Mantle uses a slim Li-Polymer pouch cell on a 3.7V single-cell rail. This replacement matches the OEM connector pinout and BMS communication protocol used by the Windows Mobile power management stack on that platform.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through full charge cycles on the XDA Mantle, monitoring BMS handshake, charge termination voltage, and cutoff behaviour. The cell accepts charge without false termination and holds voltage through screen-on and modem-active loads.\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 shutdown and then charge uninterrupted to 100%. The XDA Mantle's fuel gauge IC maps its percentage table against a full discharge curve — skipping this step leaves the coulomb counter reading against the old cell's profile.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the XDA Mantle reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe XDA Mantle uses a fuel gauge IC that stores a learned discharge curve from the previous cell. When a new cell goes in, that stored curve no longer matches the actual voltage-to-capacity relationship of the replacement. The phone reads voltage but maps it to the old cell's table, so the percentage shown can be five to fifteen points off. One full discharge-to-shutdown followed by an uninterrupted charge to 4.2V resets the learned curve and realigns the counter to the new cell's actual profile.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the XDA Mantle after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC hasn't yet recalibrated and the phone hits a voltage cliff before the displayed percentage reaches zero. Under modem-active or screen-on load, the new cell pulls more current than the fuel gauge expects at that state-of-charge, and voltage drops sharply below the BMS cutoff threshold. The phone interprets this as a hard undervoltage fault and shuts down immediately. Complete one full discharge cycle to allow the coulomb counter to anchor itself to the new cell — target a resting voltage of 3.0V at shutdown before recharging.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405090553946,"sku":"BWCS-TP6500XL-1","price":33.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43405090586714,"sku":"BWCS-TP6500XL-2","price":38.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43405090619482,"sku":"BWCS-TP6500XL-3","price":41.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-TP6500XL-big.webp?v=1779369970","url":"https:\/\/batteryweb.com\/products\/o2-o2-xda-mantle-replacement-battery-37v-2200mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}