{"product_id":"socketmobile-sonim-xp3-s-replacement-battery-37v-1200mah-li-ion","title":"Socketmobile Sonim XP3-S Replacement Battery 3.7V 1200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSocketmobile Sonim XP3-S — 3.7V Li-ion Replacement Battery (XP3-0001100-2)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1200mAh Li-ion cell replacing OEM part XP3-0001100-2 in the Sonim XP3-S and XP3 Enduro rugged smartphones. Both models share the same battery bay dimensions and connector, so one cell fits the full pair. Capacity is 1200mAh (4.44Wh), matching the original spec.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eXP3-S and XP3 Enduro compatibility:\u003c\/strong\u003e\n    Both devices run the same 3.7V voltage rail, identical physical footprint at 56.02 × 35.56 × 6.08mm, and use the same BMS handshake. The connector seats and locks the same way on either unit — no adapter needed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through full charge and discharge on the XP3-S. The BMS accepted the cell without fault codes, protection circuits tripped correctly at low-voltage threshold, and charge current tapered as expected in the CV phase.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first install:\u003c\/strong\u003e\n    After fitting a new cell, disable fast charging and run one complete discharge-to-charge cycle. The XP3-S fuel gauge IC is calibrated to the old cell's discharge curve. One full cycle lets it recalibrate against the new cell before high-current charging begins.\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 Sonim XP3-S after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe XP3-S uses a coulomb counter that was mapped to the original cell's internal resistance and voltage-discharge curve. A new cell has different impedance characteristics, so the fuel gauge misjudges the remaining capacity. Under modem transmit or screen load, voltage sags below the shutdown threshold before the gauge reaches 0%. One full discharge-charge cycle corrects the mapping and stops premature shutdowns.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eXP3-S reads wrong battery percentage after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC stores charge-state data tied to the previous cell's behaviour — after a swap, that stored data is stale. The phone may show 80% on a nearly empty cell or drop from 50% to 10% without warning. Power the device fully off, charge uninterrupted to 100%, then drain it completely to near shutdown. After one full cycle the gauge recalibrates and percentage readings stabilise.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43404180160602,"sku":"BWCS-SXP310SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43404180193370,"sku":"BWCS-SXP310SL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43404180226138,"sku":"BWCS-SXP310SL-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SXP310SL-1.webp?v=1779369370","url":"https:\/\/batteryweb.com\/products\/socketmobile-sonim-xp3-s-replacement-battery-37v-1200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}