About this replacement
Logitech G900 / G903 Series — 3.7V Li-Polymer Replacement Battery (533-000130)
This is a 3.7V 1000mAh lithium-polymer battery for the Logitech G900, G403, G703, and G903 wireless gaming mice. It replaces OEM part number 533-000130. When the original cell loses charge capacity, this swap restores the mouse to full operating condition without replacing the whole unit.
- G900 / G403 / G703 / G903 compatibility: These four mice share the same battery bay dimensions and the same 3.7V single-cell Li-Polymer configuration. The connector pinout and BMS communication protocol are identical across the group, so one cell fits all four.
- Bench tested on actual hardware: We ran this cell on a G903 and confirmed the BMS accepted the full charge cycle without tripping an over-voltage flag. The mouse reported a full battery state in Logitech G HUB immediately after installation.
- RGB and polling load management: The G900 series runs its wireless receiver at 1ms polling. If you game with onboard RGB lighting active, the draw is meaningfully higher than with lighting off. Turning RGB off when not needed slows cell degradation over the battery's lifetime.
Why the G900 drops its wireless connection mid-session at low battery
The G900 runs a 2.4GHz LIGHTSPEED receiver that requires a stable voltage to maintain its 1ms report rate. As the Li-Polymer cell ages and internal resistance rises, voltage sags under the RF transmitter's burst draw. The mouse firmware interprets this sag as a low-power condition and throttles or drops the wireless link before the battery indicator shows critical. Replacing the cell eliminates the sag because a fresh cell holds a flat voltage curve under load.
Mouse pointer stuttering or jumping after a battery swap
If the pointer stutters immediately after fitting a new battery, the USB receiver has likely lost its pairing state due to the power interruption during the swap. Unplug the LIGHTSPEED receiver, wait ten seconds, then plug it back in. If that does not resolve it, hold the mouse's power button for six seconds to force a full BLE/LIGHTSPEED re-handshake. The mouse should reconnect and track smoothly once the receiver re-establishes at full 2.4GHz signal.