About this replacement
Tritton Warhead 7.1 — 3.7V Li-ion Replacement Battery (TM703048 2S1P)
This is a 3.7V 1800mAh Li-ion cell pack for the Tritton Warhead 7.1 wireless gaming headset. It replaces the original TM703048 2S1P pack that powers the headset's audio processing and 5.8GHz wireless link. Swap it when the original cell can no longer hold a useful charge between base station sessions.
- Warhead 7.1 wireless platform: The Warhead 7.1 runs a single 3.7V Li-ion cell pack to supply both the DSP board and the 5.8GHz radio simultaneously. That combined draw is higher than a standard mono headset, so the cell must match the OEM voltage rail and connector orientation exactly — a mismatch trips the BMS before the headset completes pairing.
- Bench tested on actual hardware: We ran this pack through charge and discharge cycles on the Warhead 7.1 base station. The BMS handshook correctly, the charge indicator stepped through all stages, and the cell held voltage under the combined DSP and radio load without sagging below the cutoff threshold.
- First-cycle base station protocol: Place the headset in the base and let it complete one full, uninterrupted charge cycle before use. The Warhead 7.1 base logs the new cell during this cycle — skip it and the talk-time estimate displayed on the base will be inaccurate for the first several sessions.
Why the Warhead 7.1 cuts out mid-session on a new battery
The Warhead 7.1 draws current from two subsystems at once — the 7.1 DSP decoder and the 5.8GHz transmitter. When audio intensity spikes during gameplay, the combined draw can create a momentary voltage sag. If the cell is not fully logged by the base station's BMS, the protection circuit interprets the sag as a fault and cuts output. A complete first charge cycle resolves this by letting the BMS calibrate its cutoff threshold against the actual cell capacity.
Base station showing full charge but headset dies after a short session
A new Li-ion cell ships at storage voltage — typically around 3.6–3.7V, not at full charge capacity. The base station charge LED can show full before the cell has actually reached 4.2V and topped off. If the headset cuts off early after the first charge, seat it in the base again and allow a second uninterrupted charge. By the third to fifth cycle, the cell reaches its rated 1800mAh capacity and the base-station estimate will stabilise.