Battery under load

Mandoguy wrote:
What about forgetting my batteries and getting back to my original question. When a battery is under a load, the voltage you would read drops, correct? So assuming someone doesn't have $200 worth of dignostic equipment, but only a way to check voltage, if the reading drops to say 11.8v but rebounds above 12 when the load is removed, is any damage being done to the battery at that low voltage with the load applied?

12v No load
you are 50% charge or less
it is time for a recharge
if you want any kind of normal battery life , it is time for a full recharge

yes you can keep going, but the lower the charge state, the harder and longer to get them back to full and the shorter the life span / USE , you will get from them

batteries are a disposable limited use and lifetime
it can be extended to the max possible by proper care and recharge
or it can be drastically short by abuse

enough battery 2, 3, 4 ? to stay above 50% charge for your weekend
then fully recharged to full, at home before going out again
can assure many years of use, so that years of use per battery cost less, than replacing them every year or two

you don't need to spend $200
there are $30 ampHr meters, that give precise amps and volts and watts
and tract AmpHrs in and out, which is the very best way to know battery condition

i tried the voltage tracking for many years, and replaced a lot of batteries
hint, it takes longer time to recharge and more amphrs in, than what you take out, to fully recharge a battery, its the nature of the chemistry that creates the electricity, time is the big factor
that final 10% from 90% charge to 100% charge takes many hours
with out doing the that the batteries keep getting less and less capacity,
its like dropping rocks in your fuel tank everytime you fill up
do it long enough and there is no more room in the fuel tank