CM15A Should Not Eat Batteries
Are batteries required to operate the CM15A?
My CM15A seems to be draining batteries while it is plugged in to the wall. Is this normal?
Batteries are not required to use the CM15A. If you install batteries in the CM15A, they should last quite a while as long as the CM15A is connected to wall power. If you discover that your computer interface is draining batteries while it is plugged in, then it is defective.