[RE-wrenches] Max charge for lithium batteries

[frenergy]

Hey Folks,

             From the SimpliPHI/Outback integration guide download, 
using an Outback (I assume any brand of) charge controller (EG: FM80, 
FM60, FM100), their chart shows absorbtion voltage at 56.4 for 51.2 nom 
PHI batteries with time set at 6 minutes, page 18.  If using the 
inverter, they show 54.0 volts for 2 hrs, page 13.

             I found this at their website: 
https://simpliphipower.com/product-documentation/

then scroll down.  There may be a longevity advantage to not fully 
charging L-ion batteries but if you're only charging to 80% and not 
really supposed to go below 20% SOC then L-ion batteries aren't looking 
much better than FLA batteries in terms of capacity.

Bill

Feather River Solar Electric

On 11/1/2021 10:03 AM, Chris Mason wrote:
> There's no benefit to charging to 100%. If the charging parameters are 
> set up correctly, you'll never really get to 100%.
> If you look at most prismatic cells, the absolutely maximum voltage is 
> 3.65V. My systems are set up to charge to 3.4V or 54.4V. I take that 
> as 100%.
>
>
> On Sun, Oct 31, 2021 at 12:19 PM 
> <drake.chamberlin at redwoodalliance.org> wrote:
>
>
>     I have a client that insists it is better not to charge lithium
>     batteries to 100%. Is there any truth to this?
>
>     Thanks,
>
>     Drake
>
>
>     Drake Chamberlin
>     Athens Electric LLC
>     Ohio Electrical Contractor’s License 44810
>     CO Master Electrician’s License 4526
>     NABCEP Certified PV Installation Professional
>
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> -- 
> Chris Mason
> Solar systems designer
> Generac Generators Industrial technician
>
> Comet Systems Ltd DBA Comet Solar
> Anguilla Cell  264.235.5670
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-- 
Feather River Solar Electric
Bill Battagin, Owner
4291 Nelson St.
Taylorsville, CA 95983
530.284.7849
CA Lic 874049
www.frenergy.net


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