On Friday, 4 May 2018 14:25:02 UTC+1, Dave Plowman (News) wrote:
In article ,
Graeme wrote:
The battery takes a charge, but it must be the battery not holding a
charge. New battery time :-(

I've got a very posh ACT battery tester. It gives you an instant readout
of the battery's actual capacity in amp.hr. Left over from when I was
working. I'd expect any decent battery place to have similar.

Basically, if that capacity is something like 20% (or more) less than the
figure on the case, it's scrap.

I hear figures like that often. I've run car batteries to way lower than that before they became problematic. I doubt the last one had 10% of its capacity left before it began to struggle.


NT