Nothing to do with uC: measuring parasitic draw from car battery


Author Message
thwill

Guru

Joined: 16/09/2019
Location: United Kingdom
Posts: 4370
Posted: 08:50pm 15 Aug 2024      

Thanks Kevin,

Digital meter with 10A setting.

The car battery went very very very flat whilst sat for a couple of weeks ( < 0.5V ), I did charge it back up but it then drained again in 4 days - my understanding is having got to that low a voltage it is probably fundamentally broken now ?

Before I buy and potentially ruin a new battery I'd like to know if there is an electric fault (high parasitic current).

And if I'm making no sense then it is because I am of the generation which didn't get taught any useful mechanical skills.

Best wishes,

Tom
Edited 2024-08-16 06:51 by thwill