# Power Supply
Plugin: proc.plugin
Module: /sys/class/power_supply
## Overview
This integration monitors Power supply metrics, such as battery status, AC power status and more.
This collector is supported on all platforms.
This collector supports collecting metrics from multiple instances of this integration, including remote instances.
### Default Behavior
#### Auto-Detection
This integration doesn't support auto-detection.
#### Limits
The default configuration for this integration does not impose any limits on data collection.
#### Performance Impact
The default configuration for this integration is not expected to impose a significant performance impact on the system.
## Metrics
Metrics grouped by *scope*.
The scope defines the instance that the metric belongs to. An instance is uniquely identified by a set of labels.
### Per power device
Labels:
| Label | Description |
|:-----------|:----------------|
| device | TBD |
Metrics:
| Metric | Dimensions | Unit |
|:------|:----------|:----|
| powersupply.capacity | capacity | percentage |
| powersupply.charge | empty_design, empty, now, full, full_design | Ah |
| powersupply.energy | empty_design, empty, now, full, full_design | Wh |
| powersupply.voltage | min_design, min, now, max, max_design | V |
## Alerts
The following alerts are available:
| Alert name | On metric | Description |
|:------------|:----------|:------------|
| [ linux_power_supply_capacity ](https://github.com/netdata/netdata/blob/master/health/health.d/linux_power_supply.conf) | powersupply.capacity | percentage of remaining power supply capacity |
## Setup
### Prerequisites
No action required.
### Configuration
#### File
There is no configuration file.
#### Options
There are no configuration options.
#### Examples
There are no configuration examples.