So I went to take my car for an MOT this morning and the battery was completely flat.

I quickly took a multimeter to it and it was 1 volt!

I only drove the car 2-3 weeks ago, so it's not like it's been sitting for a long time to get down to that level from not being used.

I've got 2 questions:

- Any ideas as to what may have caused it to drop so dramatically? (I have a tracker, but surely it can't draw that must power)

- Will it be possible to charge the battery up from 1 volt? (was thinking of getting one of the Ring Smart Chargers?) Or shall I just buy a new battery?

Thanks in advance for any help!