kiev light meter,considerate conversion to non special batterys

inspired by the zenit apk,which has a external power imput, (it rinses batterys). i thought id apply it to my shiney new kiev, however i dont want to do anything nasty to it because its loveley,apart from its battery requirements.

what i used
spair battery compartment cover
a screw
2 rubber washers
some heatshrink
a spring
wire
soldering iron
hot glue gun
battery holder and clip
flash sync plug and socket
side cutters
file,and rotary tool
drill
reamer

iv done aa conversions to numerous other cameras in a much less sympathetic manner.
im no fan of the modern button cell battery, because they last a year if your lucky weather you use them or not, especially when compaired to the old poisonous mercury ones which would last for 5 years or more,(actually have an olympus camera with 5 in it and its still going,_)