My SC-100 tells me the battery has only 8.5 volts, but I just put a fresh 9V battery in. What gives?

The SC-100 has a voltage drop of about 0.5 V , so a good battery will generally read about 8.5V. In fact the SC-100 will still function when the battery is well below 8V, though we recommend replacing the battery when the battery check warns you with its red LED and buzzer.

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