# Smart Home Charger Guide

`action.devices.types.CHARGER` - Interactions with chargers may include starting and stopping charging, and checking the current charge level, capacity remaining, and capacity until full values.

This type indicates that the device gets the Charger icon and some related
synonyms and aliases.

## Device capabilities

Refer to the corresponding trait documentation for
implementation details, such as attributes and states that your service should support, and how to
build EXECUTE and QUERY responses.

### Required traits

These traits and commands are required, if applicable to your
device. If your device does not support these traits, enter the error code of
`functionNotSupported` in a QUERY or EXECUTE response. See
[Errors and exceptions](https://developers.home.google.com/cloud-to-cloud/intents/errors-exceptions) for more info.

- [`action.devices.traits.EnergyStorage`](https://developers.home.google.com/cloud-to-cloud/traits/energystorage)

## Example device: Simple charger

This section contains example intent payloads representing a common "Charger"
based on the device type and traits above. If you add or remove traits in your implementation,
modify your responses accordingly to reflect those changes.

### Sample SYNC response

Request

```
{
  "requestId": "6894439706274654512",
  "inputs": [
    {
      "intent": "action.devices.SYNC"
    }
  ]
}
```
Response

```
{
  "requestId": "6894439706274654512",
  "payload": {
    "agentUserId": "user123",
    "devices": [
      {
        "id": "123",
        "type": "action.devices.types.CHARGER",
        "traits": [
          "action.devices.traits.EnergyStorage"
        ],
        "name": {
          "name": "Simple charger"
        },
        "willReportState": true,
        "attributes": {
          "isRechargeable": true,
          "queryOnlyEnergyStorage": false
        },
        "deviceInfo": {
          "manufacturer": "smart-home-inc",
          "model": "hs1234",
          "hwVersion": "3.2",
          "swVersion": "11.4"
        }
      }
    ]
  }
}
```

### Sample QUERY response

Request

```
{
  "requestId": "6894439706274654514",
  "inputs": [
    {
      "intent": "action.devices.QUERY",
      "payload": {
        "devices": [
          {
            "id": "123"
          }
        ]
      }
    }
  ]
}
```
Response

```
{
  "requestId": "6894439706274654514",
  "payload": {
    "devices": {
      "123": {
        "status": "SUCCESS",
        "online": true,
        "descriptiveCapacityRemaining": "MEDIUM",
        "capacityRemaining": [
          {
            "unit": "PERCENTAGE",
            "rawValue": 50
          }
        ],
        "capacityUntilFull": [
          {
            "unit": "SECONDS",
            "rawValue": 3600
          }
        ],
        "isCharging": true
      }
    }
  }
}
```

### Sample EXECUTE commands

#### Charge

For additional details on the command parameters,
see the [`action.devices.traits.EnergyStorage`](https://developers.home.google.com/cloud-to-cloud/traits/energystorage#action.devices.commands.charge) reference.
Request

```
{
  "requestId": "6894439706274654516",
  "inputs": [
    {
      "intent": "action.devices.EXECUTE",
      "payload": {
        "commands": [
          {
            "devices": [
              {
                "id": "123"
              }
            ],
            "execution": [
              {
                "command": "action.devices.commands.Charge",
                "params": {
                  "charge": false
                }
              }
            ]
          }
        ]
      }
    }
  ]
}
```
Response

```
{
  "requestId": "6894439706274654516",
  "payload": {
    "commands": [
      {
        "ids": [
          "123"
        ],
        "status": "SUCCESS",
        "states": {
          "online": true,
          "capacityRemaining": [
            {
              "unit": "PERCENTAGE",
              "rawValue": 50
            }
          ],
          "isCharging": false
        }
      }
    ]
  }
}
```

## Device ERRORS

See the full list of [errors and exceptions](https://developers.home.google.com/cloud-to-cloud/intents/errors-exceptions).