1) Obtain four 2-cell AA battery holders at your local Radio
Shack or electronic parts outlet. I would strongly recommend
against getting the white open sided ones seen in the picture
above. These battery holders have a tendency to develop cracks
on the ends of the holders (which you can see happening with
the bottom right battery holder in the 2nd picture above). A
better option may be the black battery holders that are closed
on 5 sides.
2) Sew a sheet of nylon fabric into the camera strap (sorry,
I won't list dimensions. I will leave the placement of the batteries,
the resulting sheet dimensions, etc.. up to the individual.
Play around, experiment, and see what is most comfortable for
you. I chose to have the batteries close to the end of the strap
but most would probably want it a little further back so the
batteries can hang over your hand when you are not wearing the
strap around your neck). This nylon sheet will be used cover
the battery packs. It should be able to wrap around the packs
1 1/2 times so make sure it is at least large enough for this
purpose. Err on the side of excess, if it's too large, you can
always trim it later.
3) Obtain adhesive velcro strips. Sew the loop strips onto
the camera strap on both sides where the battery holders will
be placed. Peel and stick the hook strips onto the bottom of
each battery holder.
4) Make a dummy battery using an old 2CR5 battery:
a) Start this buy cutting open the back (the
flat side) of the 2CR5. Cut away just enough so that you can
remove the cylindrical lithium cells. I found x-acto or box
cutter blades heated over a flame to work best here (use pliers
to hold the box cutter blade).
b) Remove the cylindrical lithium cells from
the battery. Attached to the cells are likely to be 2 metal
strips which were used as external contacts for the battery.
Pull these off, you'll need to use them again.
c) Get a foot long piece of "speaker"
wire and solder them to the metal contact tabs from step b.
Clear urethane insulated wire with multiple copper strands is
a good choice because it is flexible and has good abrasion resistance.
1 foot is probably longer than you need but any extra length
can be easily wrapped and secured under the nylon cover sheet
on the strap.
d) Set the metal contact tabs from steps b
& c into their old grooves in the plastic battery shell.
The tab connected to the positive (+) wire should be on the
left side so that it makes contact with the positive battery
contact on the camera. You may have to use small sticks to prop
and hold them in place.
e) Mix enough epoxy together to fill about
1/3 of the battery shell and pour it in. This will make sure
the contacts and wires are held in place. Let the epoxy cure
according to it's instructions.
f) Scrape off any epoxy which may have seeped
over to the outer surface of the dummy battery's electrical
4) Wire the battery packs according to the following diagram:
Here, four AA cells (2 battery holders) are in series on each
side (left and right). The left series is then wired to the
right series in parallel and this is tapped by the wire from
the dummy battery. Make sure all connections are soldered for
strength and insulated with electrical tape or heat shrink tubing
to prevent shorting (remember to slip heat shrink tubing on
the wire before soldering).
5) Insert batteries into the holders. The voltage at the contacts
of the dummy battery should be 6V. Check it with a voltmeter
to make sure before putting it into your camera. It may read
a little more than 6V with fresh batteries but any reading over
7 volts would indicate improper wiring. Also check the polarity
so that it matches with that of a normal 2CR5 battery.
6) Take the battery cover off your camera, put in your dummy
battery, and lightly try to close the cover with the wire coming
out the top corner. You won't be able to because of the flange
on the battery compartment and the lip on the battery cover
pinch the wire but mark these locations on the camera and battery
cover with a pencil so you know where to trim the plastic.
7) Use a filing set or an x-acto knife to cut a notch in the
flange on the camera's battery well and the lip on the battery
cover so that the wire from the dummy battery can pass through.
8) Clean off the plastic particles left behind from making
the notch and insert the dummy battery. Close the battery cover,
turn on you camera, and make sure everything works. Remember
the A2E needs the battery cover to be closed before it can receive
power so you won't be able to turn it on by plugging in the
dummy battery without the cover.
9) Attach the battery holders to the strap using their velcro
surfaces. Leave some space between the upper and lower battery
holders so the the strap can flex. Wrap excess wire under the
nylon cover sheet and wrap the sheet around the batteries. Trim
the sheet so that there is just enough to cover all the batteries
1 1/2 times. The sheet can be held in place by sewing velcro
to the edges of the sheet at the points where it overlaps. Frays
on the nylon sheets should be sealed by quickly passing a flame
Your camera can now be operated using AA alkaline or rechargeable