HTC Vive 2.0 Tracker Compatible Battery 3.7V 500mAh

HTC Vive Tracker 2.0 / 3.0 — 3.7V Li-Polymer Replacement Battery (35H00266-02M)

This 3.7V, 500mAh Li-Polymer battery replaces the original cell inside the HTC Vive Tracker 2.0 and Vive Tracker 3.0. Both tracker generations share the same battery footprint and OEM part number 35H00266-02M. The tracker mounts to accessories or body points and runs continuous spatial tracking throughout a VR session.

• Vive Tracker 2.0 and 3.0 shared platform: HTC kept the same 3.7V battery rail and connector across both tracker revisions. The BMS handshake protocol is identical, so this cell initialises correctly in either generation without firmware complaints or charge-refusal errors.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on a Vive Tracker 3.0 unit. The onboard BMS accepted the cell at first insertion, completed a full charge cycle without thermal flags, and held voltage within the tracker's operating window across repeated tracking loads.
• Pre-session charge protocol for Vive Trackers: Charge the tracker to 100% before any extended session. The tracker's spatial-processing chip draws current in bursts during rapid movement — starting from a partial charge narrows the voltage headroom and causes drift events earlier in the session.

Why Vive Trackers lose positional accuracy when battery drops below 20%

The tracker's IMU and photodiode array pull current in short, sharp bursts each time a base station sweep passes. At low state of charge, cell internal resistance rises and the voltage rail sags during those bursts. The tracking processor interprets that voltage instability as sensor noise and introduces correction offsets — which the headset reads as positional drift or jitter. Replacing the degraded cell restores the flat voltage curve the processor needs to distinguish real movement from electrical noise.

Tracker reported as fully charged but shuts down mid-session

A Li-Polymer cell that has aged past its cycle limit loses capacity while the BMS still reports a full charge based on resting voltage. Under real tracking load, the actual usable capacity runs out far sooner than the percentage indicator suggests. The BMS then hits its low-voltage cutoff abruptly and shuts the tracker down with no warning. Swap the cell, run one full charge cycle, and confirm the tracker holds above 3.6V under active tracking load before extended use.