Razer mouse, keyboard and headset battery on Windows

How the level is read

Razer mice and keyboards answer a short status request with a level from 0 to 255, which BatteryOnPC converts into a percentage. It is the request OpenRazer uses on Linux, sent through the dongle or the cable. The app also recognises the model, so each device appears under its own name.

Mice with HyperPolling (4K and 8K dongles) answer later than the others: BatteryOnPC waits a little longer for them, so their level is not missed.

Headsets: three families

• Nari: the headset reports a voltage, so the percentage is an estimate between the voltage of an empty battery and that of a full one. It moves less smoothly than a real reading.
• BlackShark V2 Pro (2023) and Barracuda Pro: read with the protocol of Razer's recent headsets.
• BlackShark V2 HyperSpeed, Barracuda X Chroma, Kraken V4 Pro and Kraken Kitty V3 Pro: the level arrives in an audio status report. BatteryOnPC only reads it, at most once a minute, so the headset is never disturbed.

Razer devices that are not supported

Some models cannot be read safely today. BatteryOnPC leaves them alone rather than risk a problem:

• BlackShark V3, V3 Pro and V3 X: asking them for their battery makes the headset drop its connection.
• Kraken V3 Pro: its battery goes through a serial port that the app does not use.
• Kraken V4 (non-Pro): no reliable source documents how it reports its level.
• Wolverine V3 Pro controller: its firmware does not expose the battery through any documented channel.
• Bluetooth-only headsets such as the Kraken BT: not supported so far.

Add a Razer device

1. 1

   Connect it

   Plug in the HyperSpeed dongle or the cable, and check that the device works.

2. 2

   Scan for devices

   In the BatteryOnPC window, open the Devices tab and click Scan for devices.

3. 3

   Add it

   Click Add next to the device. Its icon appears in the taskbar, with its own alert threshold.