Unfortunately, I couldn't find any a price even close to reasonable. So what's the simple solution? Make my own of course! Today we'll be making both some AA and D sized dummy batteries.
Solder and Iron
Drill and an assortment of bits
AA-D convertor/AAA-AA convertor
Small length of wire
Something flat and metal (I used the blade of a knife but just about anything would work here)
The materials in question
Mark the dowel at the length of a battery.
Drill a small hole through the centre of the dowel, then counter sink a small recess in each end.
Feed some wire through the dowel and cut it to length. We want a little over on each end.
Strip the end of the wire back.
Place a large blob of solder in the small counter suck recess we made earlier, making sure it has a good connection with the stripped end of wire.
While the solder is still hot, flatten it out with your flat metal object.
Insert the dowel into the adaptor case and we're done! You now have your very own AA dummy battery and D dummy battery.