David Massey wrote:
>
> All true but if the discharged battery were charges at the 10 amp setting
> for four hours it would have received enough charge to function more or
> less normally.
I agree.
> This charging technique is reputed
> to provide the longest service life for deep cycle batteries (not really
> applicable to our situation).
It does lengthen the life of the battery, and is applicable even to
'starting' lead acid batteries as used in cars, especially as you move
into higher charge levels. However, the advantage is less for a
starting battery, as most of the 'wear' occurs while starting. Note
that the 'float' voltage is actually lower than the 'taper charge'
voltage, to avoid outgassing the electrolyte (which is not good for car
batteries, but is a real no-no for gel cells).
There are even fancier charge techniques, used for things like golf cart
and fork lift batteries, with more charge levels (some have continuous
taper charges, plus float), various sensing techniques (for battery
temperature and state of charge), and even 'conditioning' cycles
built-in. They cost big bucks, but if you have a fleet of battery
powered vehicles, and a set of batteries is $1000 or more, you spend a
little more on the charger <g>
Randall
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