On Tuesday, 18 August 2015 18:13:47 UTC+1, David wrote:

Checking what the nominal voltage should be (I assume that this is the
same as that read by a meter) WikiPedia suggests 9V for Alkaline and Zinc
Carbon with 9.6V for Lithium.
https://en.wikipedia.org/wiki/Nine-volt_battery

nominal is not actual

So the solid 8.85V is probably toast for anything that is very voltage
sensitive

only if very poorly designed

although the same article says "nearly dead" is around 5V and

yup

most devices are designed to cope with this voltage range.

no chance


NT