My car is sometimes laid up for long periods. Can anyone advise the
best way to trickle charge the battery in situ to prevent the alarm and
self-discharge from causing a flat battery?
Are there any web sites that discuss this topic?
I had a good read a week ago in a charger manual.
The charge protocol they advise for stored units,
is to charge until full,then charge some more at a
lower current,and after that to wait until self-
discharge drops the voltage to something like
12.2 to 12.4, after which you repeat the cycle.
There are some chargers,which do this automatically,
and have a temperature sensor at one of the
poles,because the whole story about charge/discharge
is very temp related.
I dont remember the brand, but it is a US one(I think)
used a lot in marine environment.
Extended trickle charge seems to damage your plates
somehow, and can spell disaster(ask my friend,he had
to clean his entire boat with soda water to remove
the evaporated sulfuric acid,at the end of the winter)