Robert Bolton wrote:
> I think how tolerant a battery is to total discharge depends upon the
> battery. It's been awhile since I read about it, but I think one of
> the traits of a Deep Cycle type battery is that it is more tolerant of
> sever discharge than a standard battery.
>
> I used so many "thinks" that I decided I should Google something up.
> http://www.howstuffworks.com/question219.htm
This is quite good, it is mainly geared to deep cycle batteries but
has a wealth of information about starting batteries too. I highly
recommend reading it if you have any interest in batteries.
http://www.windsun.com/Batteries/Battery_FAQ.htm
wrote:
>Robert Bolton wrote:
>> I think how tolerant a battery is to total discharge depends upon the
>> battery. It's been awhile since I read about it, but I think one of
>> the traits of a Deep Cycle type battery is that it is more tolerant of
>> sever discharge than a standard battery.
>>
>> I used so many "thinks" that I decided I should Google something up.
>> http://www.howstuffworks.com/question219.htm
>This is quite good, it is mainly geared to deep cycle batteries but
>has a wealth of information about starting batteries too. I highly
>recommend reading it if you have any interest in batteries.
>http://www.windsun.com/Batteries/Battery_FAQ.htm
It looks like a good source. I've researched batteries a couple
different times in the past couple years; when I needed a new deep
cycle for the motorhome and again last season when I first began
wondering about my bike's battery. I'd decided to replace the bike's
battery last fall but waited till this season to actually do it.
It turns out I should probably have opted for the Exide or OEM
battery. The old battery was an Interstate as well, but I noticed the
other day that the bottom of the seat has wear marks that match the
locations of the battery posts. The 0.1 inch difference in battery
height between Exide/OEM and Interstate may be what caused the leaky
terminal post on the old battery.
To the subject at hand -
I've drained my motorhome's batteries to 100% dead a couple times when
I'd leave something on (furnace, propane sensor, water pump) before
parking it for long term (I only use it a couple times a year). My
experience has been that batteries either lose capacity or their
internal discharge increases after a few bouts of 100% drainage.
Perhaps they start sulfating while they're sitting there dead, making
the length of deadness a major contributing factor to failure. I
wouldn't automatically change a battery that's run dead, but I'd
chastise myself for allowing the discharge to happen and monitor
battery performance for awhile.
A little more anecdotal information. My starting battery in the
motorhome weathers sub-zero weather, sitting out from October till May
unused and will still start the motorhome come spring. I noticed this
year that the battery in my Dakota gets weak after a few months of
non-use. It will still start the engine but the clock will have lost
time. The Dakota's battery is old, and I expect it's nearing the end
of it's useful life. Perhaps those batteries most negatively affected
by major discharge are the older ones that are already near their
point of failure.
Robert
BryanUT wrote:
> That is the cost I paid for leaving the key in the on position over
> night. Killed the battery, after 36 hours on the battery tender it
> failed to take on any charge.
>
> So I bought a new battery. I'll never make that mistake again. Aside
> from the expense, replacing the battery is pain. I don't know how
> guys with big / fat fingers do it.
>
> And now it's raining. I'll hope for better weather tomorrow, I have
> the day off.
Best thing to do is start it with jumper cables and let the car charge
it for a while, THEN put it on a charger to top it off.
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> battery. It's been awhile since I read about it, but I think one of
> the traits of a Deep Cycle type battery is that it is more tolerant of
> sever discharge than a standard battery.
>
> I used so many "thinks" that I decided I should Google something up.
> http://www.howstuffworks.com/question219.htm