On 26/04/2021 10:33, Fred wrote:


"williamwright" wrote in message
...
On 23/04/2021 19:00, Fredxx wrote:
On 23/04/2021 13:44, Dave Plowman (News) wrote:
In article ,
Â*Â*Â* Fredxx wrote:
At 50mA that would be less than the self discharge rate of a lead acid
battery.

Not so. A lead acid in good condition has a very low self discharge
rate.

More than a 1,000 hours?


My tractor wasn't used for five months and it started instantly.

Unlikely to have a proper alarm.

TBH, my suggestion/question of hours was for a self-discharge time when
not attached to a vehicle and therefore Bill's experience is pretty
close to that.

I based 1,000 hours on a 50mA discharge for a 50Ah battery, and we have
established the self discharge rate for a typical 50Ah battery would be
~2mA.