Re: [DML] Typical discharge rate for a stored battery

[CBL302@xxxx]

--- In dmcnews@xxxx, sand131@xxxx wrote:
> Dear Claude:
> The 1% per day Rule is interesting But can you tell us where you 
got it? The 
> reason I ask is that I disconnect my battery every fall and start 
the car in 
> the spring when the battery should be aprox 125% discharged?
> Ralph
> VIN 1606 since 1985
> 
> 
Yes,that is the basic average that a typical lead acid battery 
discharges,it could devate with a gel type car battery,( and your 
results may devate somewhat)but again it also depends on your climate 
conditions,if it is always in a warm climate (Hawaii,Flordia ect)it 
might be a less percentage,a colder climate (Alaska,Canada ect)it 
might be a higher percentage,the reason for this is that the battery 
is an electrochemical device and,as is the case with virtually all 
chemical actions,it is aided by heat(temperture),Example,if the 
capacity of a CCA of a battery at 80 Degrees is given as 100 
percent,at 32 degrees the capacity will be only 65 percent and at 0 
Deg.only 40 percent..Remember,that a lead-acid battery is not a 
storage tank for electricity,but is a electrochemical device for 
converting chemical energy into electrical energy,and the more it 
sits idle(not being charged)the more the lead plates absorb the 
electrolyte(sulphuric acid)at a typical 1%(one percent) a day (your 
results may vary somewhat) until you start the process of chemical 
reaction(charging the battery,by running the engine) Where I got the 
info on Discharge rate?I remember reading it in a Book about 
automotive batteries. 

Claude 
000570