About this replacement
SteelSeries H Wireless Gaming-Headset — 3.7V Li-ion Replacement Battery (160240)
This is a 3.7V, 900mAh Li-ion cell replacing part number 160240 in the SteelSeries H Wireless Gaming-Headset. It also fits the Siberia 800, Siberia 840, and 61298RX. When the original cell degrades and the headset can no longer hold charge through a session, this is the direct swap.
- H Wireless, Siberia 800, and Siberia 840 compatibility: These models share the same compact cell housing, connector pinout, and BMS handshake protocol — all three run the same 3.7V rail and accept the 160240 form factor without modification.
- Bench tested on actual hardware: We ran this cell through the SteelSeries base station charge cycle and confirmed the BMS completed the handshake, accepted a full charge, and reported accurate capacity to the headset firmware.
- First charge in the base station: Seat the headset in the base station and let it complete one full charge cycle before use. DECT-based headsets log the new cell during this cycle — skipping it causes the talk-time indicator to misread the actual cell state.
Why the H Wireless cuts out under combined audio and DECT radio draw
The H Wireless runs both the audio codec and the DECT radio from the same cell simultaneously. Under peak load — loud audio transients plus active transmission — instantaneous current draw spikes sharply. If the cell's internal resistance has climbed through age or degradation, voltage sags below the BMS cutoff threshold and the headset drops. A fresh cell with lower internal resistance handles those spikes without triggering the protection circuit.
Base station shows full charge but headset shuts off after a few minutes
A new cell ships at storage voltage — typically around 3.6–3.8V — not full charge. The base station indicator can show a charge-complete state before the BMS has logged the cell's true capacity baseline. This is resolved by running one complete charge-to-drain cycle through the base station. After that first conditioning cycle, the headset's charge indicator and the actual cell state will track correctly.