Canon 155 A - Manual (Page 15)

holding down the batteries. Be careful to
fit the positioning tabs on the bottom
part of the cover into the grooves.
* Since battery performance deteriorates
in cold conditions, keep the batteries
warm until just before use. Keep a set of
spare batteries warm and alternate them
with the loaded batteries so that warm
batteries are always in use. Especially
in temperatures of 0°C or lower, the use
of fully charged Ni-Cd .batteries is recom­
mended.
* When replacing the batteries, replace all
at the same time with four new batteries,
all of the same brand.
* The batteries should be unloaded if