2025-08-17 01:14:48 +01:00

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# Battery
This feature provides the high level abstraction for sampling battery level.
## Usage
To use this driver, add the following to your `rules.mk`:
```make
BATTERY_ENABLE = yes
```
## Basic Configuration {#basic-configuration}
Add the following to your `config.h`:
|Define |Default |Description |
|--------------------------|--------|--------------------------------------------------|
|`BATTERY_SAMPLE_INTERVAL` |`30000` |The time between battery samples in milliseconds. |
## Driver Configuration {#driver-configuration}
See the [Battery Driver](../drivers/battery) documentation for more information.
## Functions
### `uint8_t battery_get_percent(void)` {#api-battery-get-percent}
Sample battery level.
#### Return Value {#api-battery-get-percent-return}
The battery percentage, in the range 0-100.
## Callbacks
### `void battery_percent_changed_user(uint8_t level)` {#api-battery-percent-changed-user}
User hook called when battery level changed.
### Arguments {#api-battery-percent-changed-user-arguments}
- `uint8_t level`
The battery percentage, in the range 0-100.
---
### `void battery_percent_changed_kb(uint8_t level)` {#api-battery-percent-changed-kb}
Keyboard hook called when battery level changed.
### Arguments {#api-battery-percent-changed-kb-arguments}
- `uint8_t level`
The battery percentage, in the range 0-100.