====== Battery Powered Raspberry Pi ======

The goal of this bunch of tests is to measure how long a Raspberry Pi can stay on when powered using an external cell phone battery pack. Different software configurations and runtime environments will be tested.

===== Scenario 1: Ethernet setup =====

^  Item      ^  Description                  ^
|  **Hardware**    | Raspberry Pi Model B rev 2. CPU: 700 MHz ARM1176JZF-S core. Memory: 512 MB. Onboard storage: SD 16 GB |
|  **Software**    | Raspbian GNU/Linux Debian Wheezy |
|  **Networking**    | Fast Ethernet 100 Mbit/s |
|  **Power Supply**    | [[http://www.cellularline.com/catalog/en/product/usb_pocket_charger_smart|Cellularline USB pocket charger smart]] 2200 mAh, output: 5 V DC 1000mA, weight 62 grams |
|  **OS / Software tweaks**    | Nothing, the Raspbian OS is run with standard configuration |
|  **CPU load**    | Idle operating system, no user applications |
|  **Network load**    | The Raspberry Pi receives a 56 byte ICMP ECHO_REQUEST every minute and responds accordingly with the standard|

^        ^  Test 1  ^ Test 2  ^ Test 3  ^ Average  ^ σ  ^
|  Uptime    | 4 hours, 7 minutes \\ (= 14820 seconds)  | -  | -  | -  |

{{  raspein:battery-raspberry-1.jpg?400  }}

{{  raspein:battery-raspberry-2.jpg?400  }}


===== Scenario 2: Wi-Fi setup =====

^  Item      ^  Description                  ^
|  **Networking**    | Wireless-N150 USB Adapter. Distance from the access point: 30 cm. Wi-Fi 802.11n 2.4 GHz  |

^        ^  Test 1  ^ Test 2  ^ Test 3  ^ Average  ^ σ  ^
|  Uptime    | 3 hours, 12 minutes \\ (= 11520 seconds)  | -  | -  | -  |

{{  raspein:battery-raspberry-3.jpg?400  }}


===== Scenario 3: Bluetooth setup =====

^  Item      ^  Description                  ^
|  **Networking**    | Sitecom CN-516 Bluetooth 2.1 USB Adapter. Distance from the second device: 30 cm. Ping, data size=44 bytes  |
|  **Network load**    | The Raspberry Pi receives a 44 byte ping every minute and responds with a 44 bytes pong |

^        ^  Test 1  ^ Test 2  ^ Test 3  ^ Average  ^ σ  ^
|  Uptime    | 4 hours, 26 minutes \\ (= 15960 seconds)  | -  | -  | -  |