[RE-wrenches] Magnum System - Discharged Battery Bank

[Larry]

Right Bill. We recommend fully charging and then an equalization charge 
on all new flooded batteries. It takes many cycles on a new battery to 
achieve full saturation of all the active material. Because of this 
effect, I believe it is vital to reach 100% SoC regularly during the 
first few months of a battery life.

Larry
  

On 12/19/14 9:34 PM, William Dorsett wrote:
>
> That’s the reason it is so essential to get as fresh a batch as 
> possible and make sure all are fully charged before installation.
>
> Bill Dorsett
>
> Manhattan, KS
>
> *From:*RE-wrenches [mailto:re-wrenches-bounces at lists.re-wrenches.org] 
> *On Behalf Of *Larry
> *Sent:* Friday, December 19, 2014 7:07 PM
> *To:* RE-wrenches
> *Subject:* Re: [RE-wrenches] Magnum System - Discharged Battery Bank
>
> I have installed/serviced thousands of battery based systems, I have 
> not seen any reversed cells either, but I know how it happens.
>
> Here's a thought on what could cause multiple lower capacity cells in 
> a bank. >From the moment a battery is not being charged, including 
> newly assembled batteries, it is self discharging and lead sulfate is 
> forming on the plates. If left uncharged or undercharged for months, 
> which could be date of assembly to date of installation, the capacity 
> could be affected due to ionic bonding (a level 2 sulfate bond 
> blocking SO4 from finishing the electrochemical process by discharging 
> its electron to Pb). Simply put, less surface area is available so 
> there is less capacity. Unless the installation date is within 60 days 
> or less of the manufacturing date, this could happen.
>
> If these damaged batteries were then mixed with healthy ones, this 
> could account for multiple low capacity cells and the scenario I 
> described in my previous email would apply.
>
>   
> Larry Crutcher
> Starlight Solar Power Systems
>
>

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