{"product_id":"o2-xda-mini-s-replacement-battery-37v-2350mah-li-ion","title":"O2 XDA Mini s Replacement Battery 3.7V 2350mAh 35H00062-00M","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eO2 XDA Mini s \/ XDA Mini Pro — 3.7V Li-ion Replacement Battery (35H00062-00M)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V Li-ion cell replaces the original 35H00062-00M battery in the O2 XDA Mini s and XDA Mini Pro Windows Mobile smartphones. Capacity is 2350mAh (8.7Wh), matching the original power rail these handsets were built around. Mid-2000s pocket PC phones are notoriously hard to source cells for — this unit uses the correct pin-out and connector for both models.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eXDA Mini s and Mini Pro compatibility:\u003c\/strong\u003e\n    Both handsets share the same battery bay dimensions, voltage rail, and connector orientation. The BMS on this cell communicates over the same three-contact interface the charging IC on both boards expects — no pin adapter or modification needed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell on an XDA Mini Pro board and confirmed the charge IC accepted the BMS handshake on the first connection. The protection circuit tripped correctly at the low-voltage cutoff threshold without triggering a hard board lockout.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    After fitting this cell, run one complete discharge down to automatic shutdown, then charge uninterrupted to 100% before normal use. The XDA Mini s fuel gauge IC calibrates its coulomb counter against the discharge curve on the first full cycle — skip this and percentage readings will drift immediately.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the XDA Mini s after a cell replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe XDA Mini s uses a simple coulomb-counting fuel gauge that was calibrated to the original cell's discharge curve at the factory. A new cell with a steeper voltage drop under load — particularly when the GSM modem transmits — hits the low-voltage cutoff before the gauge reaches 0%. The board interprets this as a hard undervoltage event and shuts down immediately, even though the displayed percentage looks safe. One full discharge-charge cycle resets the gauge's reference points and moves the cutoff threshold back into alignment with the new cell.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDevice not powering on after the replacement battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells self-discharge in storage, and if this battery dropped below approximately 2.5V per cell during warehousing or transit, the BMS will have entered a deep-discharge lockout state to prevent damage. Connecting the phone to a wall charger — not a PC USB port — delivers enough current to trip the BMS recovery circuit. Hold the charger connection for at least 15 minutes before attempting to power on; PC USB ports often cannot supply sufficient current to exit the lockout and the phone will appear completely dead until a wall adapter is used.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405260062810,"sku":"BWCS-WIZA16XL-1","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405260095578,"sku":"BWCS-WIZA16XL-2","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405260128346,"sku":"BWCS-WIZA16XL-3","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-WIZA16XL-1.webp?v=1779370368","url":"https:\/\/batteryweb.com\/products\/o2-xda-mini-s-replacement-battery-37v-2350mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}