Dead battery

[bromleybysea]

This is strictly non-boaty but might be useful to know. Can you destroy a conventional lead acid battery by completely discharging it? My ancient Audi seems to have discharged its battery completely after sitting idle for a couple of days. It’s heading for the scrap-yard anyway, but I can‘t charge the battery even with an old trickle charger that has always been able to revive the deadest of batteries.

 

[bikedaft]

yes

 

[bikedaft]

ps what Audi? (just finished fixing a 2009 one, saving it from the scrappy...)

 

[PaulRainbow]

This is strictly non-boaty but might be useful to know. Can you destroy a conventional lead acid battery by completely discharging it? My ancient Audi seems to have discharged its battery completely after sitting idle for a couple of days. It’s heading for the scrap-yard anyway, but I can‘t charge the battery even with an old trickle charger that has always been able to revive the deadest of batteries.

Certainly can.

 

[Refueler]

As above - most likely cream crackered !!

There is an old trick to get a reluctant battery to start charging .... connect another battery in parallel ... but with extreme care as the charged battery will try to dump its load faster than a rabbit gets f***** ... depending on the fault - it could be extremely dangerous.,
I do not recc'd it.

 

[Stemar]

If it went down in only a couple of days of sitting there, it sounds as though the battery was knackered already. Can you jump start the car to get it to the dump?