{"product_id":"htc-vive-focus-replacement-battery-385v-3150mah-li-polymer","title":"HTC Vive Focus B2PXH100 Replacement Battery 3.85V 3150mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHTC Vive Focus — 3.85V Li-Polymer Replacement Battery (B2PXH100)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V 3150mAh Li-Polymer battery for the HTC Vive Focus standalone VR headset. It replaces part number B2PXH100 and powers the headset's display, processor, and inside-out tracking systems. Capacity is 3150mAh (12.13Wh), matching the original specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVive Focus compatibility:\u003c\/strong\u003e\n    The Vive Focus uses a single internal battery cell at 3.85V nominal to run the Snapdragon 835 processor, LCD panel, and six-camera tracking array simultaneously. All three subsystems share this voltage rail, so the cell must hold its nominal voltage under combined load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell in a Vive Focus unit under full tracking and rendering load. The BMS held charge distribution steady across draw spikes and engaged protection cutoff correctly at the low-voltage threshold without false trips.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePre-session charging for VR tracking stability:\u003c\/strong\u003e\n    Always bring this battery to full charge before a long session. The Vive Focus tracking processors draw stable current even when the display dims — a partially charged cell can sag below the voltage floor the tracking subsystem needs, causing drift events mid-session.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Vive Focus loses tracking when the battery drops below 20%\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe six-camera inside-out tracking system on the Vive Focus requires a consistent voltage supply to process spatial data at the correct frame rate. As a Li-Polymer cell ages or discharges toward its lower limit, internal resistance rises and voltage sags under the combined GPU and camera-array draw. The tracking processor interprets this as a data timing error and resets its positional reference, which users see as a sudden jump or drift in the virtual environment. Keeping the cell above 20% — roughly 3.6V under load — prevents the tracking subsystem from hitting its floor.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eHeadset shuts down without warning mid-session\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eUnannounced shutdowns on the Vive Focus are almost always a voltage cliff event rather than a software crash. When a degraded or deeply discharged cell cannot sustain voltage under the simultaneous draw of the display, Snapdragon processor, and wireless stack, the BMS triggers an emergency cutoff to protect the cell — this happens in milliseconds with no gradual warning. A new cell with healthy capacity eliminates the internal resistance spike that causes the cliff. After fitting the replacement, power the headset on tethered to USB-C until the indicator shows full charge before running a standalone session.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43428091396186,"sku":"BWCS-HTR300SL-1","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43428091428954,"sku":"BWCS-HTR300SL-2","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43428091461722,"sku":"BWCS-HTR300SL-3","price":37.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HTR300SL-1.webp?v=1779934063","url":"https:\/\/batteryweb.com\/products\/htc-vive-focus-replacement-battery-385v-3150mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}