[RE-wrenches] SOC, FNDC, and LFP batteries

[Jay]

Hi Lou,

Can you tell us which LFP batteries?  
And what rates of discharge/charge?

Thx
Jay
Peltz power. 

> On Aug 17, 2018, at 12:09 PM, Lou Russo <lou at spreesolarsystems.com> wrote:
> 
> Hello All,
> 
> Does anybody have any insight in getting the SOC to report accurately on the Outback FNDC when using batteries that have a minimal voltage curve? I have several systems with LFP batteries that have both a eGauge (communicating directly with the battery BMU) and a FNDC and I get wildly different SOCs. In a typical  24 hour period (12am-12am) I get SOCs on the FNDC that vary 2% to 34% of what the battery BMUs are reporting. I am assuming that the BMUs are reporting accurately. I would think a 1%-5% difference would be acceptable.
> 
> Any help or thoughts on this subject  would be greatly appreciated.  
> 
> Aloha,
> 
> Lou Russo
> lou at spreesolarsystems.com
> 808 345 6762
> Spree Solar Systems LLC 
> CT-34322
> 
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