Turtle Beach Elite 800 Replacement Battery 3.7V 1000mAh

Turtle Beach Elite 800 Series — 3.7V Li-Polymer Replacement Battery (FT083040P)

This is a 3.7V 1000mAh Li-Polymer replacement battery for the Turtle Beach Elite 800, Elite 800x, and Elite 800P wireless gaming headsets. It uses OEM part number FT083040P and physically matches the original cell at 40.50 × 29.50 × 8.14mm. Swap it in when the original pack no longer holds a charge across a full gaming session.

• Elite 800, 800x, and 800P compatibility: All three models share the same cell format, connector pinout, and BMS handshake protocol — one SKU covers the entire lineup without modification.
• Bench tested on actual hardware: We cycled this cell through the Elite 800 base station and confirmed the BMS completed its handshake, accepted a full charge, and reported battery status correctly to the headset firmware.
• First charge on base station: Place the headset in the base station and run a complete charge cycle before use. The DECT radio in these headsets requires the base to log the new cell before the talk-time indicator reads accurately — skipping this step produces false low-battery warnings early on.

Why the Elite 800 cuts out mid-session on a fresh battery

The Elite 800 runs both the audio amplifier and the 2.4GHz wireless radio from the same cell simultaneously. Under combined load, voltage sag across a partially conditioned Li-Polymer cell can trip the BMS undervoltage cutoff even when the pack shows charge remaining. This typically happens in the first two to three cycles before the cell reaches its rated capacity. After three to five full charge-discharge cycles, the cutoff behaviour stabilises and mid-session dropouts stop.

Base station shows full charge but headset shuts off after a few minutes

A new Li-Polymer cell ships at storage voltage — roughly 3.6–3.8V — not at full charge. If the base station's charge controller sees that voltage and interprets it as near-full, it terminates the charge cycle early. The result is a cell that reads 100% but holds far less usable energy than rated. Fix this by placing the headset in the base, leaving it undisturbed for a full charge cycle of at least two hours, then confirming the indicator light completes its full sequence before removing the headset.