Battery Tester

[Jugglering]

I have a (ok, it's cheap and basic) "Draper" battery tester which has decided to no longer let me know what the charge level of inserted batteries is/are.... It used to be able to distinguish between a "good" battery, a "weak" battery and one that needed replacing....now, zilch, absolutely nothing. My question is therefore, are there batteries inside the battery tester that need changing ? Or do I need to go and spend some more money on buying a new one... doh! (it was the sort that could test both 9V and 1.5V if that helps..... )

[mibn2cweus]

Battery testers do not generally require an internal battery as the power to "deflect" the metre is provided by the battery being tested.

However if it also has a continuity tester than it most likely requires an internal battery.

If there is an internal battery this should be relatively easy to access.

[Jugglering]

Thanks mibn. You've confirmed what I thought - that the battery tester is defunct, dead as a dodo, gone to that great cheapo gizmo place in the sky.... It doesn't have an inbuilt continuity meter but I shall have a bit of fun doing a post mortem.