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£1,973 pledged of £20,000 goal
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By Shahid Darbar
£1,973 pledged of £20,000 goal
backers

About this project

BattPi is a case for Raspberry Pi 2 & B+

  • Battery Backup
  • Real Time Clock
  • UPS
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Grey

THE STORY OF BattPi

Having owned RPi for a while, I realized that it is a portable, powerful and affordable device. But, soon it became evident that the portability becomes limited due to the lack of battery management. So, I looked around and came across few battery management boards that offer such functionality. But the next question was how do you fit that circuit in the currently available cases and how to attach batteries? And the solutions did not appear neat. 

It became very clear that there has to be a BETTER SOLUTION. And so BattPi was born. 

Plan is to manufacture the case in the UK itself and have already got quotations for tooling cost which is reflected in the pledged amount. The battery will be sourced from China and circuit shall be manufactured in Hong Kong.  

Ivory
Ivory

New Top Cover - Has mounts for your custom circuit boards.

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 All Suggestions from backers and everyone else are Welcome. 

YOU NEED BattPi ?

BattPi meets your needs - if you are an enthusiast or a creator or hobbyist, and you want to keep your projects running all the time; or if you need to take your project outside in open; and you want to protect your Raspberry Pi then you need BattPi.   

Whats more? The BattPi Circuit board supports adding external batteries. So you can add any of your Lithium Ion or Lithium Polymer batteries for that 12 or 24 hour run time. Instructions shall be provided along with the BattPi case.

Battery & Circuit Board
Battery & Circuit Board
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What each header does on the Circuit ?

SPECIFICATIONS  

Box: 

Size: 108mm x 65.5mm x 45.5mm 

Battery:

Type: Lithium Polymer

Battery: 5000mAh

Smaller Battery : 2500mAh

Circuit Board:

RTC: DS1302 IC

BMS: TP 4056 IC

Capacity: DS2780 IC

I2C: DS2482 IC

Output: USB A (5v)

Input: Micro USB

BattPi IS UNIQUE

It features a distinct double chamber design. The battery and battery management circuit board occupy the bottom chamber. The top chamber is for Raspberry Pi board. An opening in the top chamber exposes the headers for Power, I2C and RTC. 

Connectors for Power,  I2C and RTC
Connectors for Power, I2C and RTC

Battery Capacity can be queried through the I2C interface on the Raspberry Pi.  

Also, there are three separate headers for DS1302 IC for real time clock. 

Full source code shall be provided so end users can integrate the functionality easily into their existing projects.

You can also check capacity by pressing the button near the USB A output as shown in the image below.

PRODUCTION SCHEDULE

We will ship BattPi in Aug 2015. Here is the schedule for delivery:

  • Mar - Apr: Refine the design, optimize for rough situations. 
    Order tooling for the box and finalize production. 
  • May - Order Circuit boards and batteries  
  • Jun - July: Receive delivery of BattPi Box and Circuit and Batteries. 
  • Aug - Sep : Assemble and test here in UK
  • First Cases dispatch 

SPECIAL THANKS TO...

My lovely wife and daughter for their patience and understanding.

Raspberry Pi is a trademark of the Raspberry Pi Foundation

Risks and challenges

I beleive BattPi is a well designed case. Even in the first prototype as shown in video, the size and dimensions have fit together quite well.

However, there are chances that final design may have subtle differences to what is shown in the video. I would like to enhance the design to withstand rigorous use.

Also, I will try to change the design so that the case can be mounted to a base.

Also, I would like to mention that the power switch and USB A output may take each others places. This is because I have found it will be much easier to assemble the case if the switch is at the same side as the LEDs and micro usb input.

Having the two major components sourced from outside the country, there is a risk of delay in schedule.

Maximum effort shall be put in delivering BattPi at the correct time.

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Support this project

  1. Select this reward

    Pledge £5 or more About $8

    BattPi Case CAD Model as .stl file by email.

    So you can 3D print the case if you want to.

    You can add battery and circuit later on.

    THANKS :)

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  2. Select this reward

    Pledge £15 or more About $23

    BattPi Case Only.

    Use the bottom chamber to house your own circuits and sensors. Use the opening in between to pass through the connectors.

    Protects Raspberry Pi and protects your Circuits.

    And a THANK YOU :)

    Note: Add £2 postage outside UK

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  3. Select this reward

    Pledge £20 or more About $31

    BattPi Circuit Board only

    Use the circuit in your projects with your own battery. Accepts Lithium Ion or Lithium Polymer battery.

    Instructions provided.

    And a big big THANK YOU !!!

    Note: Add £3 postage outside UK

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  4. Select this reward

    Pledge £33 or more About $51

    BattPi - BARE MINIMUM

    Case + Circuit Board + 2.5Ah Lithium Battery

    Up to 4 hours of run time.

    Has a smaller 2.5Ah (9.25Wh) Battery
    Without CR1220 coin cell.

    THANKS :)

    Note: Add £6 postage outside UK

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  5. Select this reward

    Pledge £43 or more About $66

    BattPi Case + Circuit + Battery COMPLETE.

    Early Bird Offer

    With THANK YOU !!! :) !!!

    Note: Add £9 postage outside UK

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  6. Select this reward

    Pledge £53 or more About $82

    BattPi Case + Circuit + Battery COMPLETE.
    With 2A Micro USB Power Supply.

    With a THANK YOU !!! :) !!! :)

    Note: Add £9 postage outside UK

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    5 backers
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  7. Select this reward

    Pledge £65 or more About $100

    FULLY INSTALLED Raspberry Pi 2

    Raspberry Pi 2 board
    + 8GB micro SD card (with OS of your choice)
    + BattPi Case (with Circuit + 5Ah Battery)
    + 2Ah Micro USB Power Supply.
    + Connector Cables

    Ready To Use - Out Of The Box

    THANKS

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  8. Select this reward

    Pledge £85 or more About $131

    2 BattPi Cases + Circuit + Battery COMPLETE.

    With THANK YOU !!! :) !!!

    Note: Add £9 postage outside UK

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    4 backers
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  9. Select this reward

    Pledge £100 or more About $154

    2 BattPi Cases with Circuit and Battery - COMPLETE.

    With 2A Micro USB Power Supply.

    With a THANK YOU !!! :) !!! :)

    Note: Add £9 postage outside UK

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    3 backers
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  10. Select this reward

    Pledge £150 or more About $231

    3 BattPi Cases with Circuit and Battery - COMPLETE.

    With 2A Micro USB Power Supplies.


    And a mention of name on our website.

    With a THANK YOU !!! :) !!! :)

    Note: Add £15 postage outside UK

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  11. Select this reward

    Pledge £250 or more About $385

    5 BattPi Cases with Circuit and Battery - COMPLETE.

    With 2A Micro USB Power Supplies.

    5 extra BattPi Batteries (Up to extra 16 hours of runtime. Attachable by end user). Instructions provided.

    And a mention of name on our website.

    With a THANK YOU !!! :) !!! :)

    Note: Add £25 postage outside UK

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  12. Select this reward

    Pledge £500 or more About $770

    10 BattPi Cases with Circuit and Battery - COMPLETE.

    With 2A Micro USB Power Supplies.

    10 extra BattPi Batteries (Up to extra 16 hours of runtime. Attachable by end user). Instructions provided.

    And a mention of name on our website.

    With a THANK YOU !!! :) !!! :)

    Note: Add £45 postage outside UK

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Funding period

- (60 days)