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-boun...@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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