Download Canon Speedlite 188A Specifications

.
Open the battery chamber cover using
the viewfinder cover.
Load a new battery so that its terminals are in the
directions indicated by the diagram inside the battery
chamber.
Insert the negative end first. Then push down and
insert the positive end. Close the chamber cover.
The camera will not function if the battery is loaded incorrectly or without
anyone installed inside.
The AE- 1 PROGRAM will not work
without a battery. We recommend carrying
a spare battery especially when you are
engaged in any important assignment.
Further, when you are working in cold
weather, always make sure there are
adequate precaution are taken for possible
weak performance of the cell(s)..
DO NOT touch the battery terminals. Wipe them and the camera contacts with a clean
dry-cloth before loading to prevent poor contact from dirt.
4. Checking the Battery
1) Turn the main dial to "A".
2) Then, press the battery check button. Shooting is possible if you hear about six or
more "beeps" per second. If the camera beeps slowly (about three or fewer "beeps"
per second), there is not enough power. In this case, replace the battery.