Turtle Beach Stealth 600 2Gen Compatible Battery 3.7V 500mAh

Turtle Beach Stealth 600 2Gen — 3.7V Li-Polymer Replacement Battery (VDL782039)

This 3.7V, 500mAh Li-Polymer cell replaces the internal battery in the Turtle Beach Stealth 600 2Gen wireless gaming headset. It matches OEM part number VDL782039 and restores wireless operation when the original cell no longer holds a charge. Dimensions are 42.00 × 19.60 × 6.80mm — confirm these against your existing cell before fitting.

• Stealth 600 2Gen fit: The 2Gen platform uses a compact Li-Polymer pack with a specific connector and BMS handshake tied to the headset's charge management circuit. This cell matches that connector and communicates correctly with the onboard BMS — the headset's charge indicator behaves as expected after swap.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the Stealth 600 2Gen platform. The BMS accepted the pack without error flags, and the charge circuit reached full voltage cutoff at 4.2V with no thermal anomalies.
• First-cycle logging on the 2Gen: After fitting, dock the headset in its base station and run one complete charge cycle before using it wirelessly. The headset's firmware logs the new cell during this first cycle — without it, the battery indicator can misread state-of-charge and cut off earlier than expected.

Why the Stealth 600 2Gen cuts out mid-session on a new battery

The 2Gen draws from the battery simultaneously through the 2.4GHz wireless radio and the audio DSP. Under combined load, a cell at storage voltage — typically around 3.6–3.7V — can sag below the BMS low-voltage cutoff threshold even though it shows a partial charge. The headset interprets this sag as a depleted cell and shuts down the radio to protect the pack. Running one full charge cycle before first use brings the cell to its rated 4.2V ceiling, giving enough headroom to handle combined draw without tripping the cutoff.

Base station showing a charging error after battery swap

The Stealth 600 2Gen base station handshakes with the headset's BMS before registering a valid charge session. If the new cell was fitted with residual charge below the BMS's initialisation threshold, the base can flag an error rather than begin charging. Remove the headset from the base, power it on briefly to confirm the cell has enough voltage to boot, then re-dock it. If the error clears and charging begins, let it run to 4.2V before the first wireless session.