EVER FIND YOURSELF AWAY FROM A POWER PLUG?
RECHARGE YOUR FAVORITE DEVICE ANYWHERE - EASILY - AT LITTLE COST!
Your device doesn't know from where it gets a charge! Nor does it care.
- car battery - AC outlet - other-
---------- and now ----------
WLADICUS POWER PACK
The first picture is the finished battery pack in its weird case. You can choose your own casing.
The female socket is at the bottom of the case (at the back in the picture).
* Parts List *
- 6 cell AA battery holder
- a 9-volt battery socket to connect to the 6-cell holder (or solder wires directly to the battery holder terminals)
- female cigarette lighter socket
- switch (optional)
- any container you wish to design (I used cutaways of 2 empty plastic hand cream bottles (brand name Aveeno, I think).
I also used double-side tape to hold the socket in place before screwing it down.
Step 5: The Circuit Diagram
batteries are in use only when you plug in the adapter into the socket.
The diagram shows a 6-cell battery holder (3 batteries on each side of the container with a 9 volt battery connector).
I tested this circuit using a 4-cell battery holder (4 AA's providing 6 volts) and it worked also. Some cars have 6-volt batteries - so the car adapter has circuitry to handle anything from 6 to 12 volts input.
I tested this system using 4 AA alkaline batteries for 6 volts, and 6 AA batteries/ 9 volt input.
Both worked great and charged my palm device.
Using 'C' or 'D' cell batteries would provide a much longer lasting supply for several charges. However, this is really designed for emergency situations when no other source of power for your phone or other 5-volt device is available. The AA batteries are sufficient to meet the need. I think that even a regular 9-volt battery would provide enough 'juice' for a quick emergency boost for a few minutes at least.
You can modify it in many ways to suit your personal creative impulse.