About this replacement
Razer Turret Gaming Mouse — 3.7V Li-Polymer Replacement Battery (PL803040)
This 3.7V 500mAh Li-Polymer cell replaces the internal battery in the Razer Turret wireless mouse component. It fits the Turret gaming mouse (RZ01-0133, RZ84-01330100) and restores charge-holding capacity when the original cell has degraded. Voltage and footprint match OEM spec exactly.
- Turret mouse compatibility: The Turret keyboard-mouse combo uses a separate rechargeable Li-Polymer cell inside the mouse module. All listed model numbers — RZ01-0133 and RZ84-01330100 — share the same 3.7V cell with PL803040 dimensions (41.48 × 29.55 × 9.26mm). Connector orientation matters here; confirm polarity before plugging in.
- Bench tested on actual hardware: We cycled this cell through charge and discharge on the Turret mouse platform. The BMS accepted the cell without fault flags, and the onboard charge circuit reached full termination voltage as expected. No swelling was observed across test cycles.
- Mouse sensor power draw: Razer's optical sensor and wireless transmitter draw more current than a standard office mouse. Avoid leaving the Turret mouse on its charging pad indefinitely — trickle overcharge on a degraded original cell is one of the main reasons the OEM cell fails faster than expected. Charge until full, then unplug.
Why the Turret mouse loses pairing after a battery swap
A full power loss clears the volatile memory that holds the active USB receiver pairing on some Turret firmware versions. The mouse and receiver lose their handshake when voltage drops to zero during the swap. After fitting the new cell, unplug the USB receiver from the host machine and reinsert it. If the cursor still does not appear, hold the pairing button on the underside of the mouse for three seconds with the receiver plugged in.
Pointer stuttering or lag mid-session on the Turret mouse
When the Li-Polymer cell drops below roughly 3.5V under load, the wireless transmitter throttles its polling rate to stay within the reduced power budget. This appears as lag or skipped cursor movement — not a USB or driver issue. The stutter worsens as the cell ages because internal resistance rises and voltage sags faster under sensor draw. If the symptom disappears after charging and returns within a short session, the cell has degraded and needs replacement.